Hydrologic and Biological Mom itoring of Lower SIrasota Bay

Hydrologic and Biological Mom itoring of Lower SIrasota Bay

1975 - 1978

Smwta High School Mvaneed Marine Science Report * 1

JUNE, 1979

~ d i t o d by : MicLwI Stuart S t u d o ~ t Editor: r)#y Taddio

I CONTROL

"... ..*. .. .-.- HYDROLOGICAL AND B I O L O G I C A L

MONITORING OF LOWER SARASOTA BAY

Repor t #1

JUNE, 1 9 7 9

SARASOTA HIGH SCHOOL ADVANCED

MARINE SCIENCE

E d i t e d by: Michael S t u a r t

S t u d e n t E d i t o r : Penny Taddio

P r i n t i n g and Binding

S a r a s o t a County P r i n t i n g Department

TABLE OF CONTENTS

. . . . . . . . . . . . . . . . . . . . . . 8 . I n t r o d u c t i o n

. . . . . . . . . . . . . . . . . . . . B . Acknowledgements

C . W a t e r M o n i t o r i n g - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . Methods . . . . . . . . . . . . . . . . . . S t a t i o n D e s c r i p t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . Data Discuss ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary

D . Zooplankton . . . . . . . . . . . . . . . . . . . . . . I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . Methods . . . . . . . . . . . . . . . . . . S t a t i o n D e s c r i p t i o n s Data . . . . . . . . . . . . . . . . . . . . . . . . . . Discuss ion . . . . . . . . . . . . . . . . . . . . . . .

E . Grass F l a t Measured Tows . . . . . . . . . . . . . . . . . . . . . . I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . Methods . . . . . . . . . . . . . . . . . . S t a t i o n D e s c r i p t i o n s Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Discuss ion . . . . . . . . . . . . . . . . . . . . . . . . Summary

. . . . . . . . . . . . . . . . . . . . . . F .. Bibl iography

LIST OF TABLES

S a r a s o t a County A i r E Water P o l l u t i o n Cont ro l Department annua l averages f o r hydrographic d a t a . C-2

Seasonal hydrographic d a t a f o r S t a t i o n #l. . . . . C-13

Seasonal hydrographic d a t a f o r S t a t i o n #11 . . . . C-17

Seasonal hydrographic d a t a f o r S t a t i o n # 2 . . . . . C-18


Seasonal hydrographic d a t a f o r S t a t i o n #4. . . . . C-28


Seasona l hydrographic d a t a f o r S t a t i o n #7 . . . . . C-34

Monthly averages o f hydrographic parameters f o r S t a t i o n #1 . . . . . . . . . . . . . . . . . . . . C-36

Monthly averages o f hydrographic parameters f o r S t a t i o n #11. . . . . . . . . . . . . . . . . . . . C-38

Monthly averages o f hydrographic parameters f o r S t a t i o n # 2 . . . . . . . . . . . . . . . . . . . . C-39

Monthly averages o f hydrographic parameters f o r S t a t i o n # 3 . . . . . . . . . . . . . . . . . . . . C - g l


Monthly averages of hydrographic parameters f o r S t a t i o n # 6 . . . . . . . . . . . . . . . . . . . . C-45


Annual (based on 9 months) a d j u s t e d averages f o r hydrographic parameters a t S t a t i o n s 1 , 2 , 3 and 4 . . C-46

Oxygen s o l u b i l i t y v s . s a l i n i t y and tempera ture . . C-59

Seasonal d i s t r i b u t i o n o f zooplankton f o r S t a t i o n # l . . . . . . . . . . . . . . . . . . . . D-5

Seasonal d i s t r i b u t i o n o f zooplankton f o r S t a t i o n #11. . . . . . . . . . . . . . . . . . . . D-7

Seasona l d i s t r i b u t i o n o f zooplankton f o r S t a t i o n # 2 . . . . . . . :. . . . . . . . . . . . D-8

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n f o r Page

. . . . . . . . . . . . . . . . . . . . S t a t i o n # 3 D-9

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n f o r S t a t i o n # 4 . . . . . . . . . . . . . . . . . . . . D-11 S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n f o r . . . . . . . . . . . . . . . . . . S t a t i o n # 6 . D-13

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n f o r S t a t i o n # 7 . . . . . . . . . . . . . . . . . . . . D-14

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n data f o r L - . . . . . . . . c a t c h e s on t h e B a y f r o n t g r a s s f l a t E-4

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n t h e Wreck g r a s s f l a t . . . . . . . . E-6 Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e B i r d Key Yacht C lub g r a s s f l a t . . . E-9

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e B i g P a s s g r a s s f l a t . . . . . . . . E-12

*

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e Sou th Lido g r a s s f l a t . . . . . . . E-15

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e I n n e r C i t y I s l a n d g r a s s f l a t . . E-18

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e O u t e r C i t y I s l a n d g r a s s f l a t . . . . E-21

T e c h n i c a l names f o r o r g a n i s m s c a u g h t i n t h e measured t o w s . . . . . . . . . . . . . . . . . . . E-24

LIST OF FIGURES * C h a r t o f Water Moni to r ing S t a t i o n l o c a t i o n s . . . . . C-9

Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n #1 . . C-46

Graphs of h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n #11. . C-48

Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 2 . . C-49



Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n s "' #6 and 7 . . . . . . . . . . . . . . . . . . . . . . C-55

Graphs o f Annual (based on 9 months) a d j u s t e d a v e r a g e s f o r S t a t i o n s #1, 2 , 3 and 4 . . . . . . . . C-56

C h a r t o f Measured Tow S t a t i o n l o c a t i o n . . . . . . . E-3

Graphs o f monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r g r a s s shr imp . . . . . . . . . . . . . . . . . . . . E-27

Graphs o f monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r bayonet shr imp . . . . . . . . . . . . . . . . . . . E-29

Graphs o f monthly- s i z e - f r e q u e n c y d i s t r i b u t i o n f o r p i n k shr imp. . . . . . . . . . . . . . . . . . . . . E-31

Graphs o f monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r p i n f i s h . . . . . . . . . . . . . . . . . . . . . . E-33

Graphs o f monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r f i l e f i s h . . . . . . . . . . . . . . . . . . . . . . E-35

A . INTRODUCTION

Marine s c i e n c e educa t ion i n c l u d e s t e a c h i n g t h e p r o c e s s o f

s c i e n c e a s w e l l a s t h e con ten t of t h e f i e l d . I n t e a c h i n g t h e

p roces s o f marine s c i e n c e , t e a c h e r s r o u t i n e l y have s t u d e n t s

l e a r n va r ious t echn iques such a s p lankton sampling, b i o l o g i c a l

sampling, oxygen de t e rmina t ion , s a l i n i t y de t e rmina t ion , e t c .

The d a t a c o l l e c t e d d u r i n g t h i s t e a c h i n g p r o c e s s i s , ~ s u a l l y used

on ly by t h e s t u d e n t s . A t S a r a s o t a High School , t h e d a t a was r e -

corded t o demonstrate s e a s o n a l v a r i a t i o n s . Soon it w a s appa ren t

t h a t w i t h a l i t t l e e f f o r t , t h e d a t a t h e s t u d e n t s were c o l l e c t i n g

could be u s e f u l 1 t o t h e s c i e n t i f i c community.

I n t h e f a l l o f 1975, t h e s t u d e n t s and f a c u l t y dev i sed t ech -

n iques t o r o u t i n e l y c o l l e c t d a t a a t a v a r i e t y o f l o c a t i o n s . Ey

having s t u d e n t s moni tor i i i d i v i d u a l l y , r a t h e r t h a n as a group,

- t h e y were a b l e t o cove r a whole y e a r w i th t h e same t o t a l s t u d e n t

hours t h a t were s p e n t when t h e group worked t o g e t h e r on t h e same

t h i n g . Examination and i n t e r p r e t a t i o n o f t h i s d a t a soon became

a major f o c a l p o i n t f o r t h e c l a s s e s as it could be used t o demon-

s t r a t e t h e major p r i n c i p l e s o f Marine Ecology. The change i n

format had o t h e r advantages i n t h a t t h z s t u d a n t s were l e a r n i n g

about t h e i r own bay and p rov id ing u s e f u l b a s e l i n e d a t a f o r o t h e r s

a t t h e same t ime . T h e i r work bezame very r e l e v a n t .

1,- o f t h e s t ~ d e n t c working on t h e m c n i t o r i r ~ g program a r e

e n r o l l e d i n Advanced YarFne Ecology. This means t h a t t hey have

a l r e a d y had g e n e r a l b io logy , r e g u l a r marine s c i e n c e , advanced

math, and many have had chemis t ry . T h e i r knowledge o f s c i e n c e

i s t h e r e f o r e q u i t e good. With c l o s e s u p e r v i s i o n t h e y can pro-

duce good r e s u l t s .

From 1975 t o p r e s e n t , equipment h a s s lowly been accumulated

t h a t a l lows more accu racy . By A p r i l 6f 1978 , t h e program was

o p e r a t i n g wi th a l l approved methods o f sampl ing and a boa t t o

expand t h e s t a t i o n s covered. The Ca re f r ee Learner i s a 4 1 f o o t

f l a t -bo t tomed boa t w i t h a Coast Guard r a t e d p a s s e n g e r c a p a c i t y

o f 32 p l u s a crew o f t h r e e . She i s 13 feet s i x i n c h e s wide and

has a nominal d r a f t o f 9 t o 18 i n c h e s , depending on t h e tilt o f

t h e motor. The b o a t i s powered by a n 85 horsepower Evinrude en-

g ine t h a t w i l l push h e r a t 7 k n o t s . - She i s equipped wi th spud and d a n f o r t h t y p e a n c h o r s ; flow-

i n g aquariums; Ray J e f f e r s o n 4 0 0 and Gemtronics GT-12025 depth

f i n d e r s ; Loran A ; VHF and CB r a d i o s ; a hydrophone t h a t p l a y s

through a c e n t r a l P.A. system; and a v a r i e t y o f n e t s , dredges

and e l e c t r o n i c mon i to r ing equipment d e s c r i b e d under methods and

m a t e r i a l s .

The b o a t ' s major advantage i s t h a t it h a s a l lowed a l l o f

t h e s t u d e n t s i n a c l a s s t o work t o g e t h e r w i t h a t e a c h e r . Each

s t u d e n t r o t a t e s th rough t h e va r ious t y p e s o f d a t a c o l l e c t i o n

and a n a l y s ? ~ , t he reby maximizing t h e i r unde r s t and ing o f each

component. Even though they on ly spend a s h o r t t ime on each

a c t i v i t y t hey now work c l o s e l y w i th s t u d e n t s do ing t h e o t h e r

t e s t s so t hey can s e e t h e changes o v e r a l o n g p e r i o d o f t i m e .

T h i s s t u d y i n c l u d e d b a s i c water m o n i t o r i n g ; q u a n t i t a t i v e

p l a n k t o n c o u n t s , and a q u a n t i t a t i v e s u r v e y o f t h e o rgan i sms on

g r a s s f l a t s . A l a t e r p u b l i c a t i o n w i l l c o v e r t h e s e f a c t o r s i n

more d e p t h and r e p o r t o n c h l o r o p h y l l s and B.0.D.s as w e l l .

We c o n s i d e r o u r d a t a t o be a n i n d i c a t o r o f t r e n d s and a

s t i m u l a t o r of q u e s t i o n s f o r o t h e r more s o p h i s t i c a t e d f a c i l i t i e s

t o use as a s p r i n g board f o r f u r t h e r r e s e a r c h . Though w e have

t r i e d i n a l l ways t o be t e c h n i c a l l y a c c u r a t e , o u r f a c i l i t y and

l e a r n i n g s i t u a t i o n c a n r e s u l t i n o c c a s i o n a l e r r o r s t h a t might

n o t o c c u r i n a n o t h e r l a b o r a t o r y . One t h i n g w e d i d have go ing

f o r u s w a s i n e x p e n s i v e w i l l i n g hands t o do t h e work, and s i n c e

it p r o v i d e d a g r e a t l e a r n i n g s i t u a t i o n , we went fo rward w i t h

e n t h u s i a s m . We humbly o f f e r t h i s document f o r y o u r examina t ion

i n t h e hope t h a t it w i l l h e l p d e f i n e t h e bay sys tem, and s t i m u -

l a te y o u r t h i n k i n g and i n t e r e s t i n d o i n g f u r t h e r work on S a r a -

s o t a Bay.

B . ACKNOWLEDGEMENTS

The f o l l o w i n g s t u d e n t s p a r t i c i p a t e d i n t h i s s t u d y : 1973-1974 S t e v e Brooks , Lee B e n n e t t , R i c h a r d B l a c k f o r d , and C h a r l e s R o b e r t s . 1974-1975 S t e v e Armstrong, Becky R u s s e l l , Risa Mcleod, Nancy Abene, Kent E l s b r e e , Kathy Gi lmore , David Rhodes, F red P a r a v i n c i n i , Maurice Kerr, Lyn M c C a l l , Kevin H a r d i n , David t ' l a t t , Harris W i l l i a m s , Tom Reese , Bruce B o n n e t t , Maureen Gannon, J a y Henson, P a t Brown, Ross Windom, Mike Howel l , John F l a t t , Doug F i e c k , B i l l DeLoach, Rich- a r d SanRoman, Mark Ea tough , Tim P e z a n e t t i , Lin Morse, F r e d Kunkle, Carrie Altman, T o n i I g n i z i o , Lynn Hudson, R o b e r t C a s p e r s o n , David Mowery, L a r r y Russo , C h r i s C r a w - f o r d , and B i l l C u t r e l l . 1975-1976 J u a n 4 r t i g a s , Geri B e r n h a r d , E l l e n Case, S h e l - l e y Des I s l e t s , X i c h e l l e F o r a n , Ryan F r y m i r e , Cindy Hale, Vicky K i r l i s , C h a r l i e M o f f i t , J enny Olson , Alan P l u s h , Mary Kay Ryan, J o y c e S p i e k , C h a r l e s S t e w a r t , J i m S t e w a r t , David Tomlinson, Ann U a r r e n , Mary Welsh, Lee Wende l l , Molly C i s c o , Donna Codding, S a r a Crouch, P e t e Cunningham, K e l l y DeLoach, Valerie D r o s t , Susan E g b e r t s , B i l l y E l l i o t , L e s l i e Graney, Bob G u e n t h e r , Wayne Hargabus , Sharon Heal, D a r l e n e Kunkle , Bob YcSjjipe, p a t McManus, C h r i s Mogavero, P a u l S a l v a t o r i , P a t S t e w a r t , L inda S t r e e t e r , Rock T a b e r , J ean Weismul l e r , Lance Wi l son , Pam Meyer, Doug Keesecke r , and Bob Grey. 1976-1977 J e f f Condrack, L i s a Duf fy , Mary F l a t t , F red House , J e f f e r y Kos ik , G r e p r y J o r d o n , David Ronnick , A r t h u r S m i t h , Mar iane S n y d e r , John S y p i e n , Andrew V a n c l e e f , K . C . Wahl, P a u l C a r s o n , E r i n Chance, Greg F a l s t r o m , J e f f Gockley , Michae l Gowan, Kur t H a r d i n , Nancy Humeny, E l e n a Kor, L a u r i Nagy, Lou i s S a l v a t o r y , Gina S e r e n a , Lawton S k i p p e r , Cathy S w a r t , Dennis Walburn, R i c h a r d Warren, Edelmo Z a p a t a , a n d Maurice U l f e r s , 1977-1978 John Allaman, Rico B o e r a s , S t e w a r t Daneman, S c o t t 'Eavis , Bobby E h l e r s , Gran t E l s b r e e , Greg G i l l e t t , Bobby Goodman, T h e r e s a McCormack, David Murphey, Susan P a r k e r , Anne R i c h a r d s , J e r r y S o y a r s , Lou i s S t e i n , Monty S t o k e s , Robin S t o k e s , S k i p A l l e n , Susan Armi tage , Dennis B a r t h , Ruth Blower , Mark Shambers , T rey Desenberg , L a u r i e F l e e - man, J o s h u a F o s t e r , S t e v e G a s p a r , Lory H a l l a d a y , K e n d a l l Hinshaw, Mike H u t c h i n s o n , Debbie J o h n s o n , Rudy Marmaro, K e l l y McAdoo, Ed Morgan, David S p e c h t , Dave Weiss, and Mark Whi te . 1978-1979 Dwyane C l a r k , Miche le Cus tode ,Gary Eddy, S t e p h e n H a r t s f i e l d , S a r a King, K r i s Kanoszay, Kathy L l o y d , Keely McGeehen, Susan Melv in , R i c h a r d P e r r i n , David Schwanz, Rober t S m i t h , John S t e w a r t , Tom S t o k e s , Kathy Swan, Cathy Ulfers, J o n F reye r ,Ron B e r d e l l , Mark B i l l i n g t o n , Todd C l a r e y , Troy Doty, L a r r y D r i v e r , Tim D r o s t , Eve Gamach, B i l l H a l l , David J o h n s o n , T r a c i e Malone, S h e r r y Marv in , S u z i e Nagy, Lisa S h e a r e r , Penny T a d d i o , and David Wentze l .

Our s p e c i a l t h a n k s goes t o R ichard F r i t z m e i e r who c o - d i r - e c t e d t h e c o n s t r u c t i o n o f the b o a t and s u p e r v i s i o n o f t h e s t u - d e n t s c o l l e c t i n g d a t a i n t h e f i e l d . H i s summer YCC program a l lowed u s t o c o l l e c t d u r i n g t h e summer months . Without h i s h e l p , none o f t h e work would have been p o s s i b l e .

Thank you , a l s o , t o J e f f Kosik who c o l l e c t e d t h e d a t a f o r t h e summer o f 1977.

Thanks go t o Lisa S h e a r e r and Eve Gamache f o r working s o h a r d on t h e background i n f o r m a t i o n .

We wish t o s i n c e r e l y t h a n k B i l l T i f f a n y and Mike Hey1 and t h e r es t o f t h e s taf f a t Mote Marine L a b o r a t o r y f o r t h e i r en- couragement and a s s i s t a n c e .

The s t a f f o f t h e S a r a s o t a County A i r and Water P o l l u t i o n Department a s s i s t e d on numerous o c c a s i o n s and w e wish t o t h a n k them f o r t h e i r g u i d a n c e .

We wish t o t h a n k B i l l Banks ( P r i n c i p a l ) , E d Johnson and D r e w B a r r e t t ( A s s i s t a n t P r i n c i p a l s ) , a n d Connie Hicks (Bookkeeper) f o r t h e i r c o n s t a n t s u p p o r t . A lso , t h a n k you t o - t h e County kdmini- s t r a t i o n and s c h o o l board who s u p p o r t e d u s .

Thanks goes t o J i m Harshman f o r h i s c o n s t a n t s u p p o r t and q u e s t i o n i n g o f o u r methods. H e o f f e r e d many u s e f u l s u g g e s t i o n s a l o n g t h e way.

S p e c i a l t h a n k s goes t o D r . Jeff L i n c e r f o r h i s h e l p i n g e t t i n g t h e p a p e r p u b l i s h e d . Thanks t o t h e Marine Advisory Board and t h e S a r a s o t a County Commission f o r a p p r o v i n g t h e p u b l i c a t i o n .

Thanks goes t o Rober t M . I n g l e f o r h i s h e l p w i t h t h e measured tow p r o c e d u r e s .

Many p e o p l e have p a r t i c i p a t e d o r h e l p e d i n t h i s unique p u b l i c a t i o n , and we are s i n c e r e l y g r a t e f u l t o them a l l .

We are a l s o v e r y g r a t e f u l t o t h e community and i t s o r g a n i - z a t i o n s f o p t h e i r h e l p i n b u i l d i n g o u r r e s e a r c h v e s s e l .

C . WATER MONITORING

I n t r o d u c t i o n

Very l i t t l e unde r s t and ing o f t h e b io logy o f a n e s t u a r y

can be o b t a i n e d u n t i l some knowledge o f t h e p h y s i c a l and

chemical f a c t o r s i n f l u e n c i n g t h a t sys tem h a s been o b t a i n e d .

Long t e rm examinat ion o f t h e s e f a c t o r s i s needed t o d e t e r -

mine t h e t y p e s and r a t e s o f change t h a t might occu r i n a bay

sys tem t h a t i s be ing s t r e s s e d by u r b a n i z a t i o n .

Except f o r t h e work t h e S a r a s o t a County A i r and Water

P o l l u t i o n Department has done, very l i t t l e l ong te rm w a t e r

moni to r ing h a s been done on S a r a s o t a Bay. A summary o f t h e

coun ty ' s annua l ave rages f o r s t a t i o n s t h a t a r e c l o s e t o t h o s e

r e p o r t e d i n t h i s s t udy a r e g iven i n Table C - 1 . A s can be seen

i n t h e t a b l e some f a c t ~ r s were on ly measured once i n a y e a r

whi le t h e maximum number o f samples was 1 0 .

I n t h e l a s t y e a r , t h e county h a s sampled more o f t e n . The

county r e p o r t s c o n d u c t i v i t y and t empera tu re r a t h e r t h a n s a l i n i t y .

S a l i n i t i e s f o r t h e t a b l e were c a l c u l a t e d from c o n d u c t i v i t y and

t empera tu re s o t h a t t h e va lues cou ld be compared t o t h o s e found

i n t h i s s t udy . Some e r r o r i s , o f c o u r s e , i n t roduced by making

t h i s convers ion .

A s t h i s r e p o r t was be ing p r i n t e d , Rhonda Evans a t t h e

S a r a s o t a County A i r and Water P o l l u t i o n Con t ro l Department was

complet ing a b ib l i og raphy on a l l o f t h e work done on S a r a s o t a

TABLE C - 1 .

S a r a s o t a County A i r & Water P o l l u t i o n C o n t r o l Department Annual Hydrograph ic Data -

S t a . Year # o f Temp. S a l . Turb . pH O 7 N O 2 - N PO4-P T o t a l

# Samp. O C O/oo NTU mg 1 NO3-N Ortho C o l i f me/l 1 / l o o m 1

5~g':"" 1 9 7 3 3-v' 26.0 34.0'" 7.56 8.2 6 7

A Maximum and minimum number o f samples f o r t h e y e a r .

** S a l i n i t y computed f rom t e m p e r a t u r e and c o n d u c t i v i t y

*** 508- loca ted i n S a r a s o t a Bay n e a r I n d i a n Beach D r i v e . 529- loca ted i n L i t t l e S a r a s o t a Bay n e a r S a r a s o t a P i e r . 531- loca ted i n L i t t l e S a r a s o t a Bay n e a r marke r #5 549- loca ted a t e n t r a n c e of d h i t a k e r Bayou i n S a r a s o t a Bay. 606- loca ted a t Big S a r a s o t a P a s s , dock S , marke r 1 6 .

Bay. Some o f t h e s e r e f e r e n c e s a r e l i s t e d i n t h e b i b l i o g r a p h y

o f t h i s pape r . A su rvey o f t h a t l i t e r a t u r e i n d i c a t e s t h a t no

l ong t e rm moni to r ing h a s been done b u t many s h o r t t e rm s t u d i e s

have been completed. These s t u d i e s have been done by New

Co l l ege , Mote Marine Labora tory , t h e Environmental p r o t e c t i o n

Agency, and o t h e r s . The S t a t e Department o f Na tu ra l Resources

and t h e Depar tnent o f Environmental Regula t ion a l s o have l i m i t e d

i n fo rma t ion c o l l e c t e d d u r i n g env i ronmenta l su rveys o f proposed

a l t e r a t i o n s t o t h e bay system.

Methods

From September, 1973 t o May, 1C75, s a x p l e s were collected

and ana lyzed by airs o f s t u d e n t s doing a l l o f t h e i r work i n t h e

f i e l d . The samples were c o l l e c t e d and ana lyzed between 10:03 h r s .

and 1 2 : O O h r s . . A f t e r September, 1975, a s chedu le change i n t h e

t ime f o r Advanced Marine c l a s s e s r e s u l t e d i n samples be ing r u n

'between 13:OO and 1 5 : 0 0 h r s . Th i s change i n t ime had a n e f f e c t

on O 2 and pH va lues as 24-hour sampl ing cu rves show a s much a s

a 2 . 5 ppm d i f f e r e n c e i n DO a t some s t a t i o n s from 1 0 : O O t o 1 4 : 0 0

h r s . Although sampling e a r l y i n t h e morning might have been more

meaningful f o r 0 2 , p H , and C02 v a l u e s , s choo l s c h e d u l i n g d i d n o t

a l l ow much m o d i f i c a t i o n o f t h e t i m e . With t h e excep t ion o f day-

l i g h t s av ings and t h e June , J u l y , and August 1978 samples , t h e

13:OO - 15:OO h r . t ime s l o t h a s been used. Dayl igh t s av ings t i m e

f o r ced sampl ing 1 hour e a r l i e r from A p r i l t o October each y e a r .

I n t h e summer o f 1978, poor communications r e s u l t e d i n sampling

a t e a r l i e r hours s o some o f t h i s d a t a was n o t used i n t h e g raphs .

(See Tables C - 2 th rough C-8 f o r sampling t i m e s . ) From September,

1 9 7 5 t o A p r i l , 1978, p a i r s o f s t u d e n t s d i d t h e mon i to r ing work

i n t h e f i e l d . Assemblies , a t h l e t i c s , wea ther and p e r i o d changes

p e r m i t t i n g , t h e s t a t i o n s were moni tored on a r e g u l a r schedule

dur ing t h o s e y e a r s . S t a t i o n #1 w a s done on Monday, S f a t i o n # 2

was done on Tuesday, S t a t i o n #3 w a s done on Wednesday and S t a t i o n

# 4 was done on Thursday. Due t o l a c k o f equipment t h e s t a t i o n s

c o u l d n ' t a l l be done on t h e same day. With t h e l aunch ing o f t h e

"Carefree Learner" i n A p r i l o f ' l 9 7 8 , a l l s t a t i o n s cou ld be run

on t h e same day between 13:OO and 15:OO h r s . No a t t e m p t was

made t o match t i d e o r weather c o n d i t i o n s . From A p r i l , 1978,

monieoring was done tw ice a month w i th a n a t t e m p t t o have t h e

f i r s t run i n t h e f i r s t two weeks o f t h e month and t h e second i n

t h e second two weeks w i t h about two weeks between t h e samples .

A weather b i a s h a s been in t roduced a s t h e "Ca re f r ee Learner"

does n o t go o u t i n winds o f ove r 2 0 kno t s o r i n r a i n . With

t h e s e two e x c e p t i o n s samples a r e always run on a Monday o r

Tuesday scheduled w e l l i n advance t o randomize t h e p r e v a i l i n g

environmental c o n d i t i o n s d u r i n g sampling p e r i o d s .

Wind speed , wind d i r e c t i o n , wave c o n d i t i o n s , p e r c e n t c loud

cover , and a i r t empera tu re were r eco rded f o r each sample . Wind

speeds were recorded i n 5-knot i n t e r v a l s as i n d i c a t e d by a hand-

he ld anemometer and d i r e c t i o n was t aken from t h e b o a t ' s compass.

Wave c o n d i t i o n s were e s t i m a t e d . Cloud cove r w a s e s t i m a t e d i n

p e r c e n t o v e r an a r e a d e s c r i b e d by a c i r c l e 30° from t h e v e r t i c a l .

This was done t o minimize t h e e f f e c t s o f c l o u d s on t h e ho r i zon

t h a t would have l i t t l e e f f e c t on t h e i n c i d e n t l i g h t i n t h e a r e a .

A i r t empera ture was t a k e n us ing a mercury thermometer h e l d i n

t h e shade.

T ide and r a i n f a l l d a t a were o b t a i n e d from t h e S a r a s o t a

Herald-Tribune. For each sample t h e p r i o r t i d e t i m e and h e i g h t

and t h e nex t t i d e t ime and h e i g h t were r eco rded . R a i n f a l l was

o b t a i n e d from t h e newspaper. T h e i r r e c o r d i n g s t a t i o n i s l o -

c a t e d a t t h e C i ty Water Treatment P l a n t on 1 2 t h S t r e e t .

Top samples were c o l l e c t e d 6" below t h e s u r f a c e wh i l e

bottom samples were t aken 1' above t h e bottom. S t a t i o n dep ths

v a r i e d s o t h e dep th o f t h e bottom sample v a r i e d .

Water t empera ture was t a k e n w i t h a mercury thermometer

u n t i l A p r i l , 1978. Samples from t h e s u r f a c e and bottom were

c o l l e c t e d i n Van Dorn wate r sampling b o t t l e s . The thermometer

was p laced i n t h e t o p t o be r e a d . I n A p r i l , 1978, a YSI Model

33 SCT meter was purchased and s o t empera tu re was t a k e n wi th

it a t t h e t i m e s a l i n i t y w a s r e a d .

S a l i n i t y w a s determined from 1 9 7 5 t o A p r i l , 1 9 7 8 u s i n g

an'American O p t i c a l Goldberg Temperature Compensated Refrac-

tometer . Samples f o r s a l i n i t y de t e rmina t ion were c o l l e c t e d

wi th Van Dorn sampling b o t t l e s . D i r e c t r e a d i n g s were ob ta ined

wi th a YSI Model 33 SCT m e t e r from A p r i l , 1978 t o p r e s e n t .

Throughout t h i s sampling p e r i o d , t u r b i d i t y was run us ing I

t h e Hach DREL/2 p o r t a b l e t u r b i d i m e t e r . This method had l i m i t a -

t i o n s as t h e scale was ha rd t o r e a d and i t w a s a t r a n s m i t t a n c e

method and c o l o r i n t e r f e r e d h e a v i l y on samples a t c e r t a i n t imes

o f t h e y e a r a t s t a t i o n # l . I n January o f 1 9 7 9 , a Hach Model

1 6 - 8 0 0 p o r t a b l e t u r b i d i m e t e r w a s purchased . Th i s i s a nephelo-

metry method and s o a l l e v i a t e s some o f t h e problems wi th c o l o r .

The two methods do c o r r e l a t e q u i t e well on open bay samples

even though t h e y d i f f e r i n Hudson Bayou a t t i m e s .

pH samples were drawn from t h e Van Dorn sample b o t t l e s and

then measured w i th t h e Hach Model 17-OH phenol r e d pH t e s t k i t .

This i s a c o l o r comparator d i s k t echn ique and h a s worked q u i t e

w e l l . From Janua ry , 1978 t o A p r i l , 1978, a Hach Model 17-200

pH meter was used a s a back-up. From A p r i l , 1978 t o p r e s e n t ,

a Chemtrix Type 4 0 pH mete r wi th a Model HO-50 submerg ib le

probe on a 30 f o o t l e a d was used s o t h e pH cou ld be t aken d i l

r e c t l y . pH mete rs were s t a n d a r d i z e d w i th pH 7 and 9 b u f f e r s

t h a t were b rought t o ambient t empera tu re by s e t t i n g them i n

aquariums w i t h c i r c u l a t i n g w a t e r .

U n t i l A p r i l , 1978 , oxygen was measured w i t h a Hach Model

Ox-2P Dissolved Oxygen T e s t K i t . Optimum accu racy was ob t a ined

by running t h i s t e s t w i t h t h e low range method. F i e l d t e s t

accuracy was checked a g a i n s t S tandard Method Azide Mod i f i ca t i on

procedure . Disso lved Oxygen t e s t s i n d i c a t e d t h e Hach k i t s were

w i t h i n + 1 ppm wi th b e t t e r accuracy t h e r u l e r a t h e r t han t h e - excep t ion . Samples were c o l l e c t e d w i t h Hach Model 1962, D i s -

so lved Oxygen Samplers . From A p r i l 1978, a YSI Model 57 D i s -

so lved Oxygen Meter w i t h a remote probe w a s used . This e l i m i -

na ted t h e need f o r sample c o l l e c t i o n . The i n s t rumen t was

c a l i b r a t e d w i th a YSI 5 0 7 5 c a l i b r a t i o n Chamber.

P r i o r t o March 1977 , N i t r a t e s were r u n u s i n g t h e Brucine

Method from Standard Methods ( 1 ) . Few s t u d e n t s were capab le

o f o b t a i n i n g good r e s u l t s w i th t h i s method i n t h e t ime they

were a l l o t t e d s o it was seldom done. From March o f 1977 t o

December 1978, n i t r a t e s were measured w i th Hach's Model N I - 1 4

Low Range N i t r a t e T e s t K i t . ~ h e ' l o w r ange method was used.

N i t r a t e va lues were u s u a l l y very low and exceeded t h e lower

l i m i t s o f t h e t e s t . Without a d d i t i o n a l t e s t i n g , t h i s t e s t

measures bo th n i t r a t e and n i t r i t e . From December 1978 t o p re -

s e n t , n i t r a t e s were done wi th t h e method f o r Low Range N i t r a t e s

l i s t e d i n Hach's book, Procedures , Chemical L i s t s and Glassware

f o r Water and Wastewater Ana lys i s - ( 1 0 ) . This p rocedure u s e s a

Bausch and Lomb S p e c t r o n i c 2 0 and a t 99% t r a n s m i t t a n c e g i v e s a

va lue o f 0.008 mg/l . The c o n c e n t r a t i o n o f n i t r a t e i s n e a r t h i s

l i m i t most o f t h e t ime . Even though t h e va lues a r e q u e s t i o n a b l e ,

c o n s t a n t moni to r ing o f t h i s f a c t o r would show any i n c r e a s e i n

v a l u e . - From March 1977 t o December 1978, phosphates were run u s i n g

Hach Model PO-24 Phosphate Tes t K i t s . Only or thophospha te was

checked i n t h e low range o f t h e k i t . Th is k i t i s u s u a l l y very

s a t i s f a c t o r y , but i n December 1978, t h e APHA approved method as

o u t l i n e d i n Hach's wa te r a n a l y s i s book w a s used ( 1 0 1. This

method h a s proven t o be very s a t i s f a c t o r y f o r t h e r anges found

i n S a r a s o t a Bay. A Bauch and Lomb S p e c t r o n i c 2 0 i s used i n t h e

a n a l y s i s .

I n a d d i t i o n t o t h e paramete rs mentioned B . O . D . s , ch lo ro -

p h y l l a ,. Chlorophyl l b , and phaeophyt ins have been ana lyzed .

S ince t h i s work d i d n o t beg in u n t i l December 1978 t h e methods

and d a t a w i l l n o t be r e p o r t e d i n t h i s pape r . I n t h e s p r i n g o f

1981 a second p u b l i c a t i o n w i l l d i s c u s s t h i s d a t a .

S t a t i o n D e s c r i p t i o n s

Most o f t h e s t a t i o n s i n t h i s s t u d y were chosen f o r con-

ven ience . Open bay s t a t i o n s were added on ly a f t e r t h e boa t was

launched. U n t i l a n adequa te r e p r e s e n t a t i o n o f each o f t h e s t a -

t i o n s has been o b t a i n e d , d a t a c o l l e c t i o n w i l l c o n t i n u e a t t h o s e

s t a t i o n s . Each s t a t i o n should be d e f i n e d w e l l enough through

sea sona l and annua l v a r i a t i o n s s o t h a t i n y e a r s t o come t h e

d a t a c o l l e c t e d w i l l r e p r e s e n t an a c c u r a t e b a s e l i n e f o r compari-

son . I n 1980 new s t a t i o n s w i l l be chosen s t r i c t l y on t h e i r

m e r i t s i n terms o f maximizing t h e hydrographic d e f i n i t i o n o f

Sa ra so t a Bay.

S t a t i o n #1 i s l o c a t e d on t h e S a r a s o t a High School Campus

i n t h e upper r eaches o f Hudson Bayou. Hudson Bayou d i v i d e s on

campus w i th one arm going under Behia Vista and southward whi le

t h e o t h e r arm h a s a dam on campus and t h e n wanders e a s t under

School Avenue. Both arms a r e channe l i zed and d r a i n major r e s i -

d e n t i a l a r e a s . Though. the a r e a i s g e n e r a l l y s e r v i c e d by c e n t r a l

sewer sys tems , o l d s e p t i c t a n k s occu r f r e q u e n t l y th roughout t h e

a r e a . Parking l o t , s t F e e t and lawn r u n o f f a r e p robab ly a major

component o f t h e f r e s h wate r d u r i n g r a i n s . No i n f o r m a t i o n i s

a v a i l a b l e on t h e f low r a t e s f o r Hudson Bayou.

S t a t i o n #1 i s l o c a t e d immediately west o f t h e wes te rn pa rk ing

l o t b r idge . This p a r k i n g l o t i s l o c a t e d o f f Bahia V i s t a . This

Bridge i s about 200 ya rds e a s t o f U.S. #41. The S t a t i o n i s t i d a l

and v a r i e s i n dep th due t o s i l t a t i o n . A t t imes it h a s been a s

shal low a s 1 f t . below mean s p r i n g low t i d e s and a f t e r heavy r a i n s

it e r r o d e s t o a dep th o f a s much a s 4 f t . . The dep th o f t h e r e s t

FIGURE C - 1 water , M o n i t o r i n g S t a t i o n L o c a t i o n s

S t a t i o n 11: Lower Hudson Bayou S t a t i o n 2 : B a y f r o n t G r a s s F l a t S t a t i o n 3 : O l e a r y ' s S a i l b o a t R e n t a l S t a t i o n 4 : Hart 's Land ing S t a t i o n 6 : Marker # 8 S t a t i o n 7 : Marker # 2

o f t h e Bayou on campus i s u s u a l l y o n l y i n c h e s below mean s p r i n g

low t i d e s

I n 1973 t h e s t u d e n t s p l a n t e d -- Rhizaphora mangle , Avecennia

ge rminans , L a g u n c u l a r i a racemosa , Juncus .--- r o e m e r i a n u s , and

S p a r t i n a a l t e r n i f l o r a t h r o u g h o u t t h e campus i n Hudson Bayou. -- The bottom i s g e n e r a l l y s i l t l a d e n sand w i t h a l o t o f r e c o g -

n i z a b l e l e a f d e t r i t u s .

S t a t i o n #11 i s l o c a t e d i n Hudson Bayou d i r e c t l y w e s t o f

t h e Orange Avenue b r i d g e ( s e e F i g u r e C - 1 ) . The s t a t i o n i s i n

t h e middle o f t h e c h a n n e l i n f r o n t o f t h e Hudson Manor Apar t -

ments . The d e p t h i s a b o u t 7 feet below mean s p r i n g low t i d e

The maximum d e p t h f o r t h e e n t r a n c e i n t o Hudson Bayou i s a b o u t

5 .5 f e e t . The bayou i n t h i s l o c a t i o n i s c o m p l e t e l y s e a w a l l e d - w i t h l i t t l e v e g e t a t i o n . The bot tom i s p r i m a r i l y a t h i c k l a t e r

o f s o f t s i l t as deep as 3 f e e t i n some p l a c e s

S t a t i o n # 2 i s o v e r a g r a s s f l a t on t h e b a y f r o n t between

Hudson Bayou and I s l a n d P a r k . The s t a t i o n i s immedia te ly

n o r t h o f t h e p o i n t where U.S. 41 t u r n s t o r u n p a r a l l e l t o t h e

bay. The s t a t i o n i s o f f t h e end o f a 1 2 " p i p e t h a t r u n s o u t

i n t o t h e bay a b o u t 30 f e e t . The d e p t h i s a b o u t 1 . 5 f e e t below

mean s p r i n g low t i d e l e v e l . The dominant v e g e t a t i o n i s Ha lodu le --

w r i g h t i i ----- b u t T h a l l a s i a - -- t e s t u d i n u m - -- - --- and S y r i n ~ d i u m f i l i f o r m e can - --- a l s o be foilnd i n 'lile -L,nmef3.'.ate ape=,

From 1973 t o 1975 , t h e g r a s s was d e n s e and a c t L v e l y gzow-

i,ng, b u t i n 1 9 7 6 , it began t o t h i n n u t . i n t i 1 i n 1977 t h e r e weEe

fewer t h a n 100 clumps o f g r a s s p e r s q u a r e m e t e r . The area

seems t o be r e c o v e r i n g a t t h i s t i m e . Many s t o r m sewer p i p e s

empty i n t o t h e bay i n t h i s area. The sho re i s r i p - r a p and

mangroves are beg inn ing t o grow i n t h e r o c k s .

S t a t i o n # 3 i s o f f t h e end o f t h e s a i l b o a t r e n t a l dock a t

I s l a n d Park , s o u t h o f Marina J a c k s . The water is abou t 7 f e e t

below mean s p r i n g low t i d e and i s p a r t o f a deep water tongue

t h a t cu rve s around I s l a n d Pa rk and r u n s toward Hudson Bayou.

The dredged s h e l l - s a n d beach d rops r a p i d l y t o 8 feet where t h e

bottom i s s o f t s i l t abou t 2 fee t deep . I s l a n d Park i s a f i l l e d

p o i n t e n c l o s i n g a marina which i s connec ted t o t h i s s t a t i o n by

a c u l v e r t . A s a t t h e b a y f r o n t g r a s s f l a t , many c u l v e r t s c a r r y

urban run-of f i n t o t h e immediate area.

S t a t i o n # 4 i s a d j a c e n t t o t h e f i l l e d causeway a t t h e east

end o f t h e R ing l i ng Causeway Br idge . The samples are t a k e n - o f f t h e end o f Hart 's Landing dock. The water i n t h i s area i s

11 f e e t deep . The bottom i s f a i r l y h a r d sand . The a r e a i s

e n t i r e l y f i l l material and s e a w a l l s .

S t a t i o n # 6 i s l o c a t e d between B i rd Key and I s l a n d Park

a t I n t r a c o a s t a l Waterway Marker #8 . The channe l i s 11 fee t

deep o v e r ha rd sand . A s i g n i f i c a n t t i d a l c u r r e n t from Big

Pas s r u n s by t h i s s t a t i o n .

S t a t i o n #7 i s l o c a t e d a t I n t r a c o a s t a l Waterway Marker # 3 ,

j u s t n o r t h o f t h e S i e s t a Key Br idge . The bottom i s mud under

9 f e e t o f wa t e r . P h i l l i p p i Creek w a t e r r u n s p a s t f h i s s t a t i o n

on an ou t -go ing t i d e . Th i s i s a dredged channe l t h rough g r a s s

f l a t s .

Data

Tab l e s C-2 t h rough C-8 l i s t t h e d a t a c o l l e c t e d a t s t a t i o n s

1, 11, 2 , 3 , 4 , 6 , and 7 . The t ime column i n t h e t a b l e s i n d i -

c a t e s t h e i n i t i a l t ime t h e sample was drawn and t h e t ime t h a t

t h e l a s t t e s t was completed. The t i d e column i n d i c a t e s F f o r

incoming t i d e , H f o r + o r - 1 1 / 2 hou r s o r l e s s from a h igh

t i d e , E f o r ou tgo ing t i d e and L f o r + o r - 1 1/2 hour s from a

low t i d e .

The r e a d e r should n o t e t h a t t h e sampl ing t imes changed

from 10 :OO - 1 2 : O O t o 13:OO - 1 5 : O O i n September o f 1975. The

summer o f 1978 h a s some i r r e g u l a r sampl ing t i m e s .

S t a t i o n s 6 and 7 were added i n May o f 1978. S t a t i o n 1

was d i s con t inued i n March o f 1978 whi le S t a t i o n 11 was added

i n May of 1978.

TABLE C-2 S e a s o n a l h y d r o g r a p h i c da ta f o r S t a t i o n # 1. .

Sate Ti-rle Xind ',!ind X o u d A i r T i d e D f n t h ' . l ; l t . $31. T u r b . 93 O2 39 -N Fog,-? Din. ' h e e d C o v e r T e m Tern . >IO?-N ~ r t n o

K n t s . % J

OT. O C . O/oo :!TU ni-./l

1110175 1 n : 2 0 ?P 5 - 1 0 o 2 2 . 1 P . ~ o - ) 2 2 . 0 2-8.5 2 0 . 0

1 0 2 6 . 0 F T o n 2 4 . 5 2 4 . 0 7 . 0 7 . 9 5 2 . 6 3ot 2 4 . 0 2 9 . 5 1 7 . 0 7 . 6 2 . 3

4 0 2 4 . 2 P To? 2 2 . 2 2 0 . 0 2 2 . 0 7 . 8 3 . 4 Rot 2 3 . 5 2 6 . g 1 0 . 1 7 . 9 2 . 8

8 0 2 0 . 5 L T o n l Q . O 2 5 . 0 1 9 . 0 7 . 7 4 . 8 30t 7 3 . 0 2 8 . 0 1 7 . 0 8 . 2 4 . 8

1 0 2 5 . 5 TI- 2 3 . 5 7O.5 2 2 . 0 8 . 1 3 . 7 Yot 2 5 . 5 3 '3 .0 2 2 . 0 8 . 1 4 . 5

2 0 2 8 . 0 F T o 3 2 8 . 0 2 6 . 5 1 4 . 0 7 . 9 2 . 2 Rot 2 7 . 5 2 8 . 0 2 2 . 0 8 . 1 3 . 0

1 0 2 5 . 3 F T o 7 2 3 . 5 7 5 . 0 2 0 . 9 8 . 0 5 . 4 not 2 4 . 5 2 6 . 5 25.5 8 . 2 5 . 4

5 / 1 / 7 5 1 5 T 'J 5 - 1 0 5 0 2 8 . 5 F T o ? 2 6 . 5 3 0 . 0 2 6 . 0 8 . 0 3 . 6 1 1 : 2 0 Yot 2 9 . 0 3 1 . 1 1 9 . 0 8 . 2 5 . 2

5 / 1 5 / 7 5 1 0 : 2 0 'i 1 0 - 1 5 1 0 3 0 . 0 F To? 2 6 . 5 3 0 . 0 7 . 0 8 . 2 6 4 1 1 : 2 0 Bot 2 7 . 0 3 0 . 5 9 . 0 8 . 2 6 ..4

9 / 2 2 / 7 5 1 3 : 1 5 SE 5 - 1 0 7 0 3 1 . 0 I1 T o n 3 1 . 0 2 7 . 5 2 1 . 0 8 . 9 6 . 0 1 4 : 3 0 Uot 3 2 . 5 2 9 . 5 3 7 . 0 8 . 2 5 . 0

9 / 2 9 / 7 5 1 3 : 1 7 1 0 0 2 5 . 0 !I To? 2 5 . 0 0 . 0 6 2 . 0 7 . 3 6 . 5 1 4 : 4 1 Rot 2 4 . 0 2 . 1 6 5 . 0 7 . 4 7 . 0

1 0 / 8 / 7 5 1 3 1 1 5 SE 5 - - 1 0 6 0 2 9 . 0 H T o n 3 0 . 0 0 . 0 5 5 . 0 8 . 1 7 . 5 1 4 : 4 0 Rot 2 8 . 9 0 . 5 4 5 . 0 8 . 3 7 . 5

1 0 / 1 3 / 7 5 1 3 ~ 2 0 E 0 - 5 7 0 3 0 . 5 T o n 31.0 1 7 . 0 2 5 . 0 8 . 2 8 . 0 1 4 : 3 8 30t 3 1 . 0 2 1 . 0 2 0 . 0 8 . 2 7 . 0

1 0 / 2 0 / 7 5 14 :OO PIr.! 5 - 1 0 0 2 5 . 0 H T o p 2 7 . 0 1 3 . 0 1 9 . 0 8 . 2 6 . 5 1 4 : 3 8 Rot 2 6 . 0 2 1 . 5 2 1 . 0 8 . 0 6 . 5

1 1 / 3 / 7 5 1 3 : 2 0 N 0 - 5 0 2 7 . 0 H T o n 2 6 . 5 3 1 . 0 8 . 5 9 . 5 1 4 : 2 0 !3ot 2 8 . 5 3 3 . 0 8 . 6 7;5

1 1 / 1 0 / 7 5 1 3 : 3 0 SE 0 - 5 9 0 3 0 . 0 L TO? 2 8 . 0 2 4 . 5 1 8 . 0 8 . 3 8 . 0 1 4 : 2 0 Dot 2 7 . 0 2 f i . 0 1 9 . 0 8 . 4 9 2 5

1 1 / 1 0 / 7 5 1 3 : 3 0 SE 0 - 5 9 0 .30.0 L T o p 2 8 . 0 2 4 . 5 1 8 . 0 8 . 3 8 . 0 aot 2 7 . 0 2 6 . 0 1 9 . 0 8 . 4 9 . 5

TASLE C-2 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c data f o r S t a t i o n # 1.

D a t e T h e Y i n d blind C l o u d A i r , T i d e D e p t h ;,!at. Sal. T u r b . pfi O2 VO2-N P04-? Dir. S ~ e e d C o v e r T e n n . Tern?. E.!03-N O r t h o

K n t s . % OC . OC. O/oo )ITU mg/ 1 1 rnir/L 1 1 / 1 7 / 7 5 1 3 : 1 5 S F 0-5 5 0 3 1 . 0 TOD 2 0 . 5 8 . 0 6 .0 8 . 5 1 4 . 5

1 4 : 00 '30t 20 .5 2 8 . 0 8 . 0 8 . 5 1 0 . 0 1 1 / 2 4 / 7 5 1 3 : 2 0 E 0-5 50 1 9 . 5 P To7 2 2 . 0 1 9 . 0 1 0 . 0 8 . 0 5 . 0

1 4 : 5 5 Rot 2 1 . 0 1 9 . 0 1 0 . 0 7 . 0 1 2 / 1 / 7 5 1 3 : 4 0 '.I 0 - 5 0 2 6 . 0 H Ton 2 5 . 0 1 9 . 0 7 .0 8 . 3 1 0 . 0

1 4 : 0 9 30t 2 5 . 0 2 7 . 0 3 . 0 8 . 5 1 0 . 5 1 2 / 8 / 7 5 1 3 : 1 5 E 0-5 30 2 7 . 0 F Top 2 8 . 9 2 1 . 0 7 . 0 8 . 6 1 1 . 0

1 4 : 1 5 Rot 28 .0 2 5 . 0 4 . 0 8 . 1 7 . 0 1 2 / 1 5 / 7 5 1 3 : 2 0 0-5 1 0 25 .0 Ton 2 3 . 5 3 2 . 0 1 0 . 0 8 . 0

1 4 : 1 5 Dot 23 .5 3 2 . 0 8 . 0 7 .5 8 . 5

1/ 5 / 7 6 1 3 : 2 0 50 20 .0 H T o p 1 9 . 0 2 0 . 0 2 0 . 0 8 . 1 6 . 0 1 4 : 3 0 d o t 20 .0 1 9 . 0 2 0 . 0 8 . 2 5 . 5

2 / 2 3 / 7 6 1 3 : 2 0 1 9 - 1 5 80 1 9 . 2 F TOD 2 2 . 5 2 . 0 8 . 2 9 . 0 111:15 Bot 2 1 . 8 2 . 5 7 . 9 5 . 0

3 / 1 / 7 6 1 3 : 2 5 VE 5-10 6 0 30 .0 H TOD 28.0 3 0 . 0 8 . 6 9 . 0 1 4 : 2 1 B o t 2 7 . 0 3 0 . 0 8 . 6 8 . 5

3 / 8 / 7 6 1 3 : 2 5 S 0-5 40 26 .2 L Ton 2 8 . 8 2 9 . 0 1 9 . 0 7 . 7 1 0 . 0 1 4 : 1 2 Rot 2 7 . 0 2 q . 0 1 7 . 0 8 . 3 9 . 0

3 / 1 5 / 7 6 1 3 : 2 5 S ? 1 0 - 1 5 0 2 7 . 1 F "07 2 8 . 0 3 0 . 0 5 8 . 0 8 . 3 7 . 5 1 4 : 2 5 30t 2 8 . 0 2 8 . 0 3 0 . 0 8 . 4 1 0 . 5

3 / 2 2 / 7 6 1 3 : 3 2 S T J 0-5 60 2 7 . 0 F To? 2 8 . 2 2 9 . 0 2 8 . 0 8 . 2 9 . 0 1 4 : 20 Yot 2 8 . 0 3 0 . 0 3 2 . 0 8 . 3 7 . 5

4 / 2 6 / 7 6 1 3 : 3 3 SE 0-5 20 3 2 . 0 E Ton 3 g . 0 2 9 . 0 9 . 0 1 4 : 3 3 Rot 2 9 . 0 3 0 . 0 8 . 5 9 . 5

5 / 3 / 7 6 1 3 : 3 0 \.J'.I 1 0 3 2 . 0 H To? 2 9 . 0 2 6 . 0 7 . 0 1 4 : 4 0 Bot 2 8 . 5 2 8 . 0 8 . 5 5.0

9 / 1 3 / 7 6 1 3 : ? 0 SV 0--5 80 3 2 . 0 F Ton 3 2 . 0 1 4 . 0 2 5 . 0 8 . 2 8 . 5 1 4 : 1 8 sot 3 3 . 5 1 9 . 0 2 8 . 0 8 . 4 1 0 . 0

9 / 2 1 / 7 6 1 3 : 2 5 1 0 - 1 5 50 3 2 . 5 L Ton 3 0 . 0 2 2 . 0 1 9 . 0 8 . 5 6 . 5 1 4 : 5 3 Rot 2 8 . 5 3 0 . 0 2 8 . 0 8 . 4 6 . 0

1 9 / 1 3 / 7 6 1 3 : 2 0 YE 1 0 - 1 5 30 2 7 . 5 F Ton 28 .0 2 6 . 0 2 1 . 0 8 . 5 6 . 0 1 4 : 55 Uot 27 .5 2 5 . 0 2 4 . 0 8 . 5 5 . 0

1 0 / 2 0 / 7 6 1 3 : 2 0 $'.I 5 -10 30 2 9 . 0 E To? 2 7 . 3 4 . 9 0 7 . 8 1 . 5 1 4 : 1 0 Sot__ll.5 7 . 0 3 8 . 0 7 . 9 1 . 5

TABLE C-2. ( c o n t i n u e d ) S e a s o n a l h y d r o q r a p h i c d a t a f o r S t a t i o n #1.

Date Time Wind d i n d Cloud 4i- T i d e Denth Va t . Sal. Turb . DH 02 NO?-N W4-P i ?need Cove r Ye lp Tern. NO3-N 9 r t h o

Kn t s . % O C . O C . O/oo NTU mq/ 1 mg/l ~K/L 11/15/76 13:22 Y 10-15 100 23.0 L To? 24.5 18.0 0 8.3 8.5

Rot 24.0 18.0 19.0 8.3 8.5 11/22/75 13:25 NF 10-15 50 16.5 A Top 22.5 20.0 24.0 8.0 5.0

9 0 t 22.5 20.0 24.0 8.0 5.0 12/13/76 1 3 ~ 2 0 Ti 5-10 100 24.0 F Ton 24.5 16.0 15.0 8.5 6.0

!1/ 3/77 13:20 N'? 10-15 10 21.0 H To? 20.0 0.0 65.0 8.0 7.0 S o t 20.0 0.0 65.0 8.0 7.0

1/10/77 13:30 N'J 15-20 90' 17.0. F Tor, 19.0 0.0 33.0 7.8 8.0

1/31/77 13:40 NE 10-15 100 17.0 H Ton 13.0 13.0 22.0 7.9 5.0 n o t 13.0 13.0 22.0 7.9 5.0

2/ 7/77 13:15 V 10-15 70 19.5 H Top 18.0 11.0 20.0 8.0 5.5 Aot 18.0 11.0 20.0 8.0 5.5

2/14/77 13:15 YE 5-10 80 21.3 H Too 19.5 14.0 20.0 8.2 7.5 - ~. - . -

30t 18.5 14.3 20.0 8.2 7.5 3/ 7/77 13:15 i 5-10 100 20.0 L Top 28.0 22.0 19.0 8.2 7.5 0.0 0.40

Rot 22.0 24.0 22.0 8.4 ?.5 0.0 0.40 3/14/77 13:16 4 5-10 80 26.5 L Top 28.O 22.0 24.0 7.9 8.5 0.0 0.47

Bot 28.0 22.0 24.0 7.9 8.5 0.0 0.47 5/ 9/77 13:30 N 5-10 100 26.0 E Ton 29.5 25.5 42.0 8.5 6.0 0.27

Bot 29.5 25.5 42.0 8.5 6.0 0.27 5/16/77 13:15 !JE 0-5 50 29.5 M Ton 28.5 29.5 25.0 8.2 5.0 0.14

Bot 28.5 29.5 25.0 8.2 5.9 0.14 5/23/77 13:15 ! 19-15 80 29.0 F Top 26.5 30.5 20.0 8.2 5.0 ).19

Dot 26.5 30.5 20.0 8.2 5.0 0.19 7/10/77 16:OO 10-15 32.0 To3 33.0 18.9 45.0 8.6 9.5 0.0 0.30

Rot 33.0 13.0 45.0 8.6 9.5 0.0 0.30 9/12/77 13~34 N!<l 5-10 90 33.0 H To? 31.0 29.0 34.0 8.5 2.0 0.0 0.0

14:28 9 0 t 32.0 27.0 38.0 8.5 2.0 0.0 0.0 1/20/77 13:20 id 0-5 60 30.0 L Ton 30.0 2.0 61.0 7.6 4.0 0.0 0.57

13: 49 Dot 29.5 2.0 61.0 7.6 4.0 0.0 0.57 10/10/77 13:15 $ ' ~ 1 5-10 20 30.0 H To9 30.0 15.0 12.0 8.0 6.0 0.0 0.03

14: 55 9 n t 30.0 32.0 10.0 8.2 4.0 0.0 0.18

T A B L L C-2 ( n o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 1.

Date T ime Wind Wind C l o u d .Air T i d e Denth !!at. S a l . T u r b . DH O 2 NO?-N PO4-? Dir. S ~ e e d C o v e r T ~ x D . "7

1 e n p . NO -N n r t h o K n t s . % OC. OC. O/00 NTU m e / 1 m w / 1 m r / l 3

1 0 / 1 7 / 7 7 . 1 3 : 1 5 N:J 5-10 0 2 1 . 0 L Ton 2 6 . 0 1 6 . 0 2 2 . 0 8 . 2 4 . 5 0 .- 0 0 1 0 8 S o t 2 6 . 0 2 8 . 0 1 8 . 0 8 . 4 8 . 0 0 . 0 0 . 0 5

1 0 / 2 4 / 7 7 1 3 : 1 5 NE 5-10 40 2 8 . 0 H Top 2 5 . 5 21 .0 1 5 . 0 7 . 8 7.0 0 . 0 0 . 1 1 Dot 2 4 . 5 2 9 . 0 1 4 . 0 8 .4 6 . 0 0 . 0 0 . 0 5

11/ 2 / 7 7 1 3 : 1 5 SE 5-10 4 0 28 .0 F Top 2 3 . 0 28 .5 1 5 . 0 8 .5 6 . 0 0 . 0 0 . 2 3 Bo t 2 3 . 0 2 7 . 0 1 5 . 0 8 . 2 5 . 5 0 . 0 0 . 2 5

1 4 / 7 7 1 3 : 3 0 5-10 3'0 2 2 . 0 F Top 2 3 . 0 2 0 . 0 22 .0 8 .0 5 . 0 0 . 0 0 . 1 8 B o t 2 3 . 0 2 0 . 0 2 2 . 0 8 . 0 5.0 0 . 0 0 . 1 8

1/ 9 / 7 8 1 3 : 1 0 2 0 1 3 . 0 H Top 1 7 . 0 0 . 0 1 6 . 0 7 .5 7 .0 0 . 0 5 0 . 0 3

~ ~. ~

Dot 1 3 . 2 0 . 7 20 .0 7 .6 7 . 5 9 . 0 0 . 1 3 2 / , 6 / 7 8 1 3 : 2 5 Ne 1 5 - 2 0 1 0 1 3 . 3 H Top 1 7 . 0 1 5 . 7 73 .0 7 . 6 6 .0 0 . 0 0 .04

a o t 1 7 . 0 1 5 . 7 2 3 . 0 7 . 6 6.0 0 . 0 0 . 0 4 2 / 1 3 / 7 8 1 3 : 3 0 S 1 0 - 1 5 1 0 23 .0 Ton 2 1 . 5 2 8 . 3 7 . 9 8 1 0 . 9 0 . 0 0.0

Rot 2 1 . 5 28 .3 7 . 0 8 1 0 . 9 0 .0 0 . 0 1 0 28 .0 H T o p 2 1 . 0 6 . 0 3 3 . 0 7 .9 5.0 0 . 0 0 . 0 7

R o t 2 0 . 0 7 . 5 1 0 . 0 7 .7 5 .0 0 . 0 0 . 1 0 30.0 E Top 2 0 . 0 0 . 0 2 4 . 0 8 .0 2.0 0 . 0 0 . 0 7

Rot 2 0 . 0 0 . 0 2 4 . 0 7 . 9 2 .0 0 . 0 0.07

TABLE C-3 S e a s o n a l h y d r o g r a p h i c d a t a for S t a t i o n # 11.

D a t e Time !?ind ! i ind . C l o u d A i r T i d e D e p t h Xati S a l . T u r b . pH O2 N O 2 - N PO4-P D i r . S p e e d C o v e r T e m ~ . Temp. N O ? - N O r t h o "

K n t s . % O C . OC. O/oo NTU mcl/ 1 mu/ 1 TP/L 4 / 5 / 7 8 1 2 : 0 5 TO-7.0 3 1 . 0 7 . 8 0 7 . 0 0'. 0

2

Bot 2 5 . 0 31 .0 7 . 8 0 7 . 1 0 . 0 4 / 6 / 7 8 1 4 : 2 5 24 .0 Top 25 .2 3 3 . 0 8 . 2 0 7 . 0

1 4 : 3 1 B O ~ 23 .6 3 2 . 0 8 . 1 5 6 .2 5 ? 1 0 / 7 8 Top 3 0 . 1 32 .9 8 . 1 5 6 . 5 0 . 0 0 . 0

Bot 2 9 . 0 3 2 . 0 7 . 6 0 5 . 5 0 . 0 0 . 0 5 / 1 6 / 7 8 1 3 : 3 3 SY 0-5 0 2 9 . 0 H Top 2 7 . 5 3 3 . 5 8 . 0 9 5 . 6 0 . 0 0 . 0

1 3 : 4 6 Bot 2 6 . 0 33 .5 8 . 0 1 5 . 1 0 . 0 0 . 0 6 / 2 3 / 7 8 1 2 : 4 7 S:? 5-10 2 8 . 7 F Top 2 7 . 0 2 5 . 0 5 . 4 0 .0 0 . 0

1 2 : 5 5 Bot 3 0 . 0 5 . 7 0.0 0 .0 6 / 2 7 / 7 8 1 2 : 4 7 9 0 3 3 . 3 Ton 3 1 . 5 2 6 . 8

1 2 : 5 5 Dot 29 .5 26 .0 6 / 3 0 / 7 8 1 1 : 1 9 5-10 32 .0 H Top 3 1 . 5 30 .0

1 1 : 2 5 ~ o t 3 0 . 9 3 2 . 5 4 . 0 0 . 0 0 . 0 7 / 5 / 7 8 1 3 : 2 5 0 32 .0 H Top 3 2 . 0 3 3 . 2 5 . 8 0 . 0 0 . 0

1 3 : 3 0 Bot 3 2 . 0 3 0 . 5 5 . 8 . 0 . 0 0 . 0 7 / 1 1 / 7 8 1 0 : 4 7 32 .0 L Top 3 1 . 8 3 1 . 1 4 . 4 0 . 0 0 . 0

1 0 : 54 Bot 31 .0 3 2 . 8 3 .6 0 .0 0 . 0 7 / 2 1 / 7 8 1 0 : 1 8 E 0-5 30 30 .5 H Top 29 .0 30 .5 5 .2 0 . 0 0 . 0

1 0 : 2 7 Dot 2 8 . 7 3 1 . 3 0 . 1 0 .0 0 . 0 7 / 2 7 / 7 8 9 : 4 8 S 0-5 9 0 29 .0 E Top 3 0 . 0 3 1 . 2 4 . 0 0 . 0 0 . 0 '

9 : 5 4 Bot 2.9.5 3 2 . 1 4 . 0 0 . 0 0 . 0 8 / 1 / 7 8 8 : q 5 S 0-5 0 2 8 . 3 H Ton 29 .0 2 7 . 0 3 . 3 0 . 0 0 . 0

8 : 5 1 B o t 3 0 . 0 27 .0 3 . 1 0 ..O 0 . 0 9 / 1 1 / 7 8 1 4 : 1 5 SW 0-5 0 2 8 . 0 E Top 31 .2 3 2 . 1 1 2 . 0 8 . 3 0 6 . 9 0 . 0 0 . 0 9

1 4 : 3 5 B O t 3 1 . 2 3 1 . 9 2 3 . 0 8 . 2 5 4 . 7 0 . 0 0 . 0 5 9 / 1 9 / 7 8 1 3 : 4 5 NE 5-10 8 0 3 2 . 5 F Top 2 9 . 9 3 2 . 3 1 0 . 0 8 . 3 9 7 . 6 0 . 0 0 . 0 9

1 3 : 5 5 Bot 29.0 32 .0 1 7 . 0 8 . 4 5 7 . 7 0 . 0 0 . 2 5 1 0 / 3 / 7 8 1 4 : 1 4 N!i 0-5 20 3 2 . 5 M Top 29 .9 3 2 . 1 8 . 0 8 . 3 9 5 . 7 0 . 0 0 . 1 3

1 4 : 1 8 Bot 2 8 . 8 3 1 . 5 5 . 0 8 . 2 0 4 . 5 0 .10 1 0 / 1 7 / 7 8 1 3 : 5 8 SE 0-5 0 2 6 . 5 H Top 2 3 . 1 3 1 . 3 8 .0 7 . 8 9 5 . 7 0 . 0 0 . 1 3

1 4 : l O Hot 2 2 . 9 32 .7 1 2 . 0 7 . 9 1 6 . 4 0 . 1 3 1 0 / 3 0 / 7 8 1 4 9 0 NE 0-5 1 0 30 .0 E Top 26 .6 3 2 . 8 5 . 0 8 . 5 5 5 .6 0 . 0

1 4 : 2 3 B o t 2 5 . 4 3 1 . 0 1 2 . 0 8 . 4 5 5 . 4

T A ~ L E C-3 ( c o n t i n u e d ) S e a s o n a l h y d r o s r a n h i c data f o r S t a t i o n # 11.

D a t e T i m e Wind Wind C l o u d A i r T i d e D e p t h Wat. S a l . T u r b . pH O2 N02-N PO4-P D i r . S p e e d C o v e r Temp. Temp. NO3-N O r t h o

K n t s . % OC. OC. O/oo NTU 1 m g / l ma/ l 1 1 / 1 4 / 7 8 1 4 : 0 3 4 0 2 9 . 5 H TOD 23.5 3 3 . 1 1 3 . 0 8 . 0 9 5 . 3 0 . 0

1 4 : l O Bot 22 .5 3 3 . 0 3 7 . 0 7 . 5 5 5 . 7 1 1 / 2 7 / 7 8 1 4 : 0 9 SE 5-10 20 2 7 . 0 E T o p 23.0 3 3 . 5 6 . 0 8 . 1 0 5 . 4 0 . 0 0 . 0 6

1 4 : 1 4 Bot 22.9 3 3 . 2 27 .0 8 . 1 5 6 . 3 0 . 2 2 1 2 / 1 1 / 7 8 1 4 : 1 6 N W 5-10 1 0 0 1 7 . 0 E Top 2 1 . 0 3 2 . 5 9 . 0 7 .85 5 . 3 0 .0 0 . 0 9

1 4 : 2 1 B o t 21.0 33 .0 1 4 . 0 7 .80 4 . 1 0 . 0 7

1/ 4 / 7 9 1 4 : 2 5 NE 5-16 50 1 7 . 0 H Top 1 6 . 8 3 0 . 6 6 .0 7 . 9 0 7 . 1 0 . 0 0 1 0 . 0 9 Bot 1 6 . 0 3 0 . 8 9 .0 8 . 0 0 7 . 1 0 . 0 0 0 . 0 7

1 / 2 9 / 7 9 1 4 1 7 NW 5-10 1 0 1 4 . 2 H Ton 1 7 . 2 2 7 . 9 6 . 9 7 .40 7 . 6 0 . 0 0 0 . 1 5 11(:20 aot 16 .0 2 9 . 0 1 9 . 0 7 .05 8.0 0 . 0 0 0 . 7 9

TABLE C-4 S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 2.

Date Time Wind Wind C l o u d A i r T i d 6 D e p t h V a t . S a l . T u r b . pH 02 NO -N PO4-P D i p * S p e e d C o v e r Temp. T,'mp. N O ~ - N O r t h o

K n t s . % OC. C . O /oo NTU m g / l m g / l m g / l 1/ 9 / 7 5 1 0 : l O Sd 0-5 1 0 2 2 . 8 F TOD 1 9 . 0 34 .0 1 2 . 0 6 . 0 - ~

1 2 : 0 5 Rot 2 1 . 0 32 .0 5 .0 1 0 . 0 1 / 2 9 / 7 5 1 0 : 2 0 SE 0-5 1 0 2 4 . 0 F Top 2 2 . 0 3 2 . 5 9 .0 9 . 2 0 .29 0 . 0 6

12:OO Dot 2 2 . 0 32 .5 9 .0 8 .2 2 / 1 2 / 7 5 1 0 : 1 5 S 5-10 ' 1 0 2 2 . 3 F Top 2 0 . 5 31 .0 1 0 . 0 8 . 4 5.0

1 2 : 1 5 Bot 2 2 . 0 32.0 1 1 . 0 8 . 5 1 1 . 4 2 / 2 7 / 7 5 1 0 : 1 5 NE 0-5 90 20 .6 L Top 1 9 . 2 3 2 . 0 1 0 . 0 8 .2 8 .2

1 1 : 4 5 Uot 1 9 . 2 31 .0 7 . 0 8 . 2 8 .2 3 / 1 2 / 7 5 1 0 : 1 5 E 1 0 - 1 5 70 2 3 . 0 F Top 21 .0 32 .0 9 .0 8 .2 5 . 8 0 . 1 8 0 . 0 2

-.

Dot 2 3 . 0 33 .5 1 5 1 0 8 . 2 9 .4 0 2 1 . 5 L Top 22 .0 31 .5 1 2 . 0 8 . 5 7 .4

B o t 22 .0 31 .5 1 2 . 0 8 .5 7 .0 4 / 3 0 / 7 5 1 0 : l O NW 5-10 1 0 2 7 . 5 L Top 26 .7 3 1 . 9 7.0 8 . 3 7 .0

1 1 : 4 5 B o t 2 2 . 0 33 .0 1 5 . 0 8.2 7 .0 5 / 1 4 / 7 5 1 0 : l o sv 0-5 o 27 .4 F TO? 27 .2 3 4 . 0 i 2 . 0 8 . 3 6 . 4

1 1 : 4 5 Rot 2 8 . 5 3 3 . 0 9 .5 8 . 7 9 . 8 9 / 3 0 / 7 5 1 3 : 2 0 NE 0-5 20 31 .0 E TOP 3 2 . 1 3 1 . 0 9 .0 1 2 . 0

1 4 : 1 9 Bot 2 9 . 0 3 2 . 0 20 .0 8 . 5 6 . 5 1 0 / 2 1 / 7 5 1 3 : 3 0 5-10 1 0 3 1 . 5 H t o p 2 8 . 3 3 2 . 0 4 . 0 8 . 5 1 3 . 5

14:UO Rot 2 7 . 0 32 .0 1 9 . 0 8 . 3 1 5 . 0 1 0 / 2 8 / 7 5 1 3 : 4 5 5-10 9 0 3 0 . 5 L Top 2 7 . 4 34 .0 3 . 0

1 4 : 3 0 Bot 2 7 . 4 3 2 . 0 3.0 11/ 4 / 7 5 1 3 : 4 5 SX 4 0 31 .0 F T o 9 2E.0 3 q . 0 8 . 4 - - -

~ o t 2 5 . 9 3 1 . 0 8 . 5 1 1 / 1 8 / 7 5 1 3 : 3 0 NE 5-10 30 30 .0 H T o p 21 .0 33 .0 5 . 0 8 . 7 1 0 . 0

1 3 : 4 5 ~ o t 2 0 . 5 30 .0 1 9 . 0 1 0 . 5 1 1 / 2 5 / 7 5 1 3 : 3 5 0-5 70 23 .0 F T o p 20 .5 3 2 . 0 5 . 0 8 . 5 1 0 . 5

1 4 : 4 8 Rot 2 0 . 0 3 0 . 0 8 . 0 8 . 6 9 . 5

TABLE C-4 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 2 .

Date T i m e Wind Wind C l o u d A i r T i d e D e p t h Wat. S a l . T u r b . pH O2 N O 2 - N PO4-P D i r . S p e e d CoverTemp. xernp.! NO3-N O r t h o

K n t s . % O C . C. O/oo NTU mg/ 1 m g / l m g / l 1 2 / 2 / 7 5 1 3 : 5 5 NE 1 0 - 1 5 70 2 3 . 0 F Top 2 2 . 2 3 0 . 0 1 5 . 0 8 . 1 ' 9 . 5

. 1 4 : 4 8 Bot 2 1 . 0 3 0 . 0 27.0 8 . 0 9 . 5 1 2 / 9 / 7 5 1 3 : 1 5 0-5 1 0 0 2 3 . 0 L Ton 2 2 . 0 31.0 5.0 8 . 5 5 . 0

B O ~

TOP B o t TOP Bot TOP Bot TOP Rot Top S o t TOP Bot Top Bot Top Bot Top Bot To? Bot To P ao t TOP Rot Top Bot TOP Bot TOP Bot TOP Bot

TABLE C-4 ( con t inued ) Seasonal hydrographic d a t a f o r S t a t i o n # 2.

~~ - . . ~ ..--. . ~ . . . - . -. - . - . . . .- .- . - Date Time Wind Wind c loud A i r ~ ' i ' d e 9 e ~ t h Wat. Sal. Turb. DH 0 * NO?-N PO. -P

L D i r . Speed 'Cover Temp. Temp. NO;-N Or?ho

Knts. 8 O C . O C . O/oo ?JTU m ~ / 1 mg/l mg/l L4/14/76 13:25 E 5-10 100 25.0 L Top 22.0 32.0 9.0 8.4 5.0

~ o t 21.0 32.0 13.0 8.5 6.0 1/ 4/76 13:25 N!d 0-5 50 16.5 H Top 16.0 29.5 53.0 8.4 7.0

Dot 16.5 25.0 2.5 8.5 7.0 1/11/77 13:30 NE 5-10 10 13.0 F Top 16.5 30.0 9.0 8.5 7.5

Bot 15.0 30.0 10.0 8.7 7.0 2 / 1/77 13:OO NE 5-10 0 11.0 H Top 16.0 31.0 7.0 8.5 9.5

13: 05 Bot 16.0 31.0 8.0 8.4 8.5 2/15/77 13:OO N E 0-5 90 21.0 H Top 16.0 32.0 9.0 8.5 9.5

Bot 17.0 32.0 9.0 8.6 9.5 3/22/77 14:OO W 10-15 100 H Top 25.0 31.0 18.0 8.5 8.5 0.0 0.03

~ o t 25.0 L Top 22.0

Bot 22.0 E Top 24.0

Bot 24.0 Top 24.5 Bot 24.5

H Top 25.5 Bot 25.5

F Top 29.0 Bot 29.0

E Top 29.5 Bot 29.5 Top 35.0 Bot 35.0

H Top 30.0 Bot 33.01

E Top 30.0 Bot 30.0

L Top 23.5 Bot 24.5

H Too 26.5 14 : 10 E O ~ 27.0 32.5 2.0 8.5 4.0 0.0 0.02

11/ 8/77 13:50 0 26.0 E Top 25.0 31.0 5.0 8.5 8.5 0.0 0.10 15:20 - Bot 25.0 31.0 2.0 8.5 8.0 0.0 0.10

C-20


- -- -. p-

D a t e T i m e W i n d Wind C l o u d A i r T i d e ~ e p t h Wat. S a l . T u r b . pH O 2 NO2-N PO4-P D i r . S p e e d C o v e r T e m p . T e m p . NO3-N Ortho

K n t s . % O C . O C . O/oo NTU mg/ 1 m g / l m g / l n T 2 7 7 7 7 1 E 2 5 E 0-5 1 0 0 3 1 . 0 E T o p 7 3 . O 3 2 . 0 1 0 . 0 8 . 7 7 . 0 0 . 0 0 .14

BO t T o p B o t Top B o t T o p B o t T o p ao t T o p B o t T o p B o t T o p B o t T o p B o t TOP

8 : 1 5 Bat 3 0 . 3 . 3 3 . 0 . 7 / 2 7 / 7 8 8 : 2 3 S 0 - 5 1 0 0 2 6 . 0 H T o p 2 8 . 5 3 2 . 0

8 : 3 8 B o t 2 8 . 5 3 2 . 0 8 / 1 / 7 8 1 0 : 0 3 S 0-5 9 0 2 9 . 8 E T o p 2 9 . 5 3 0 . 5

1 0 : 0 7 Bat 2 9 . 5 3 0 . 5 5 . 8 0 . 0 0 . 0 9 / 1 9 / 7 8 1 3 : 3 8 NE 0-5 8 0 3 2 . 0 E T o p 2 9 . 2 3 2 . 9 3 . 0 8 . 5 5 9 . 2 0 . 0

l 4 : 0 5 B o t 2 8 . 9 3 2 . 7 3 . 0 8 . 3 5 7 . 1 0 . 0 0 . 0 1 0 / 1 7 / 7 8 1 3 : 4 0 NE 5-10 0 2 6 . 0 H T o p 2 2 . 9 3 2 . 2 3 . 0 8 . 1 2 7 . 5 0 . 0 0 . 0 7

1 3 : 4 8 ~ o t 2 2 . 3 3 2 . 1 3 . 0 8 . 1 9 7 . 5 0 . 1 0 1 0 / 3 0 / 7 8 1 4 : 0 0 NE 0-5 1 0 2 9 . 5 E T o p 2 5 . 2 3 3 . 0 1 . 0 8 . 5 0 6 . 7 0 . 0

1 1 / 1 4 / 7 8 1 3 : 5 2 4 0 3 0 . 5 H T o p 2 3 . 1 3 3 . 9 1 8 . 0 7 . 9 9 6 . 5 0 . 0 0 . 0 1 3 : 5 9 B o t 2 2 . 9 3 3 . 8 1 8 . 0 8 . 0 0 5 . 0 0 . 0

1 1 / 2 7 / 7 8 1 3 ; 5 9 SE 1 5 - 2 0 2 0 2 6 . 0 E T o p 2 3 . 2 3 '3 .6 6 . 0 8 . 2 0 7 . 6 0 . 0 0 . 0 6 1 4 : 0 3 B o t 2 3 . 0 3 3 . 8 1 0 . 0 8 . 2 0 7 . 5 0 . 0 9

1 2 / 1 1 / 7 8 1 4 : 0 5 NW 5 - 1 0 1 0 0 1 7 . 0 E T o p 2 1 . 0 3 3 . 2 9 . 0 7 . 9 5 6 . 6 0 . 0 0 . 0 8 1 4 : 1 0 B o t 2 1 . 0 3 3 . 1 8 . 0 7 . 9 5 6 . 4 0 . 0 7


Date Time Wind Wind C loud A i r T i d e Dep th Wat. S a l . T u r b . pH O 2 N02-N P04-P D i r . Speed Cove r Temp. Temp. N O 3 - N O r t h o

K n t s . % "C . O C . -- /oo NTU mg/ 1 1 m g / l 1/ 4 / 7 9 .14:35 NE 5-10 50 1 7 . 5 T To? 1 5 . 9 31 .2 4 .0 7 .90 8 . 6 0 .00 0 .10

Bot 1 5 . 1 3 0 . 8 1 5 . 0 8 .~00 8 . 3 0 .00 0 .10 1 / 3 0 / 7 9 1 4 : 1 1 W 5-10 0 1 5 . 9 H Top 1 5 . 9 3 0 . 0 6 . 8 7 .60 8 . 5 0 .003 0 . 1 5

B o t 1 5 . 9 29.9 1 5 . 8 7 . 9 0 1 0 . 2 0 .00 0 . 7 9

TABLE C-5 S e a s o n a l h y d r o g r a p h i c d a t a for S t a t i o n # 3

Data Time Wind Wind Cloud A i r T i d e Depth l,-lat. Sal. T u r b . pH O2 OS. D i r . Speed C o v e r Temp. Temp. :Ox: ::t%E

K n t s . % OC. O C . O/oo NTU mq/ 1 3g/l mgL1 1/15/75 10:lO NC 0-5 0 15.0 F Top 16.0 33.0 9.0 9.0

11:45 Bot 14.0 32.5 10.0 8.3 9.0 .1/27/75 10:20 SE: 5-10 0 23.5 F To? 20.0 32.5 9.0 5.4 0.38 0.00

11:45 Bot 20.0 32.0 9.0 8.8 2/10/75 10:lO NE 0-5 100 18.0 F Top 19.0 32.5 5.0 8.5 8.0

11:45 ~ o t 18.0 31.0 5.0 8.5 5.5 2/24/75 10:15 NW 5-10 100 F TO? 32.5 8.5

Bot Nr) DATA 3/10/75 10:15 !d 0-5 10 22.0 F Top 18.8 32.2 8.4

11 :40 Bot 19.0 31.5 9.0 8.4 8.0 3/31/75 10:30 SY 5-10 80 27.5 F To? 25.2 31.0 15.0 8.3 5.8 0.178 0.05

ll:45 Bot 26.0 33.0 18.0 8.5 6.4 4/14/75 10:30 St*! 5-10 10 25.6 F To? 23.1 31.9 8.5 7.3 8.0

11:40 Bot 24.0 33.5 16.0 8.5 5.5 r Too 27.0

Dot 26.0 H Top 28.2

Bot F Ton 30.0

Bot F Top 29.5

30t 29.5 F Top 31.0

Bot 31.0 F Too 29.5

Bot 28.5 L Top 26.5

Bot 26.5 L Top 27.5

B o t 27.0 -

11/5/75 13:45 SE 5-10 30 29.5 H Too 27.0 8.2 9.5 14: 36 Bot 26.0 35.0 8.5 5.5

11/12/75 13:35 NE 10-15 90 27.5 L Too 26.0 31.0 11.0 8.0 14:15 Bot 26.0 31.0 10.0 8.5 6.0

11/26/75 13:32 NE 5-10 10 23.0 L Top 21.3 31.0 8.0 8.1 9.5 14 : 2 3 Rot -- 20.0 3 0 . 0 8.7 8.2 10.0

TABLE C-5 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 3

D a t e T ime Wind ' J ind c l o u d A i r T i d e D e n t h V a t . S a l . T u r b . DH 0 2 N02-N PO -p Dir. S p e e d C o v e r Temp. Temp . NO^ -N 0 r t j o

K n t s . % OC. oC. O/oo NTU -. - mg/ 1 m q / l m g / l 1 2 / 3 / 7 5 1 3 : 3 5 NE---S-~O 0 25 .0 F To? 2 3 . 0 3 1 . 0 3 . 0 7 . 2 5 . 5

1 2 / 1 0 / 7 5 1 3 : 4 0 N 1 0 - 1 5 0 1 8 . 5 'TO? 2 0 . 0 30 .0 7 . 0 8.; 8 . 0 1 4 : 3 5 Rot 2 1 . 0 31 .0 1 7 . 0 8 . 3 . 7 . 0

1 2 / 1 7 / 7 5 1 3 : 4 5 5-10 0 25 .0 E Top 2 2 . 0 31 .0 1 5 . 0 9 . 0 11r:32 not 2 1 . 0 3 1 . 0 2 1 . 0 8 . 3 6 . 5

2 / 4 / 7 6 1 4 : 0 0 NE 0-5 30 2 5 . 0 H Ton 1 9 . 0 3 2 . 0 8 . 1 6 . 5 1 4 : 4 1 B o t 1 8 . 0 31 .0 8 . 2 5 .5

2 / 1 1 / 7 6 1 3 : 2 0 0-5 0 2 3 . 9 E To? 1 9 . 6 3 2 . 0 8 . 5 1 0 . 0 1 4 : 2 0 Bo t 1 8 . 1 3 4 . 0 8 . 5 6 . 5

2 / 2 5 / 7 6 1 3 : 3 0 SE 5-10 9 0 22 .5 L Ton 1 9 . 0 3 2 . 0 8 . 7 7 . 5 1 4 : 2 0 Rot 1 9 . 0 32 .0 8 . 2 7 . 0

3 / 3 / 7 6 1 3 : 3 0 S!i 5-10 6 0 25 .0 H Top 24.0 32 .0 1 5 . 0 8 .5 9 . 0 1 4 : 2 0 Rot 22 .0 1 8 . 0 8 . 5 8 . 0

3 / 1 0 / 7 6 1 3 : 3 0 NT.1 5-10 1 0 0 2 4 . 0 F TOD 2 3 . 0 32 .0 1 0 . 0 4 . 5 Rot

0 23 .0 H Top S o t

30 27 .6 L Top Rot

9 0 2 6 . 6 H Top Rot

40 3 0 . 0 H Top Rot

7 0 26 .0 F Top 9 0 t

9 / 8 / 7 6 1 3 : 4 5 NW 5-10 7 0 3 4 . 0 H 1 4 : 1 5

9 / 1 5 / 7 6 1 3 : 3 0 NW 5-10 4 0 2 9 . 0 F 1 4 : 3 0

9 / 2 2 / 7 6 1 3 : 2 5 NW 0-5 4 0 31 .0 h' 1 4 : 3 0

1 0 / 1 1 / 7 6 1 3 : 2 0 NE 10-15 9 0 2 5 . 5 F 1 4 : 0 5

1 0 / 1 8 / 7 6 1 3 : 2 0 NE 1 0 - 1 5 1 0 0 2 6 . 5 E 1 4 : 1 5

1 1 / 1 0 / 7 6 1 3 : 4 0 S'i 5-10 1 0 26 .0 H -- -- --.

To9 32 .0 Rot 31 .0 Bot 2 9 . 5 Ton 2 8 . 0 To? 30 .0 Rot 28.0 Ton 26 .0 Rot 26 .5 TOD 2 5 . 7 ~ o t 25.5 Ton 20 .5

.. Rot 1 9 .O-

TARLE C-5 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a for S t a t i o n # 3

D a t e T ime Wind Wind C l o u d A i r T i d e D e p t h W a t . S a l . T i r b . pH O2 NO2-N PO -6 - D i r . S ~ e e d C o v e r Temp. Temn . N O ~ N 0rt\o 1 1 / 1 7 / 7 6 i 3 : 3 0 N1J 0-5 1 0 0 24 .0 L ~ o p 2 2 T 0 - 3 0 . 0 8 . 0 8 . 2 7 . 0

~ o t 2 2 . 0 3 2 . 0 22 .5 L Top 2 1 . 0 3 0 . 0

Rot 21 .0 30 .0

1 7 . 0 H Top 1 6 . 0 30.0 Bot 1 6 . 0 32.0

1 7 . 0 L Top 1 5 . 0 30 .0 B o t 1 5 . 0 32 .0

1 6 . 0 E Top 1 3 . 0 31 .0 Bot 1 0 . 0 31 .0

F Ton 1 5 . 5 Bot 1 2 . 0

27 .0 H To9 2 0 . 5 30 .0 Rot 1 9 . 0 31 .0

2 4 . 0 E Top 2 4 . 0 3 1 . 0 Dot 26 .0 3 1 . 0

28 .5 L Ton 2 7 . 0 31 .0 B o t 2 6 . 0 3 1 . 0

5 / 1 8 / 7 7 1 3 : 3 0 E 5-10 20 32 .0 H Top 27 .5 31 .0 1 2 . 0 8 . 3 7 . 0 0.05 Bo t 2 9 . 0 3 1 . 0 38.0 8 . 5 5 . 0 0.20

5 / 2 5 / 7 7 1 3 : 3 0 SW 5-10 20 3 1 . 0 L Top 3 0 . 0 3 1 . 5 9.0 8 . 4 6 . 5 0.07 S o t

7 / 1 0 / 7 7 14:OO V 5-10 30 .0 Top Bot

9 / 1 4 / 7 7 1 3 : 3 8 ST4 5-10 90 31 .0 H Top 1 & : 2 7 Rot

9 / 2 1 / 7 7 1 3 : 2 7 V 0-5 5 0 34 .0 E To? 1 4 : 1 7 Bo-t

1 0 / 1 2 / 5 7 1 3 : 3 0 S 1 0 - 1 5 1 0 2 7 . 0 H Top S o t

1 0 / 1 9 / 7 7 1 3 : 3 0 N 5-10 0 26 .0 L TO? B o t

1 1 / 1 5 / 7 7 1 3 ~ 2 0 s 5-10 80 2 5 . 0 e TO? Bot

1 2 / 7 / 7 7 13:OO 1 0 1 5 . 0 E Top - -. Bot -.

TABLE C-5 ( c o n t i n u e d )

S e a s o n a l h y d r o g r a p h i c d a t a for S t a t i o n # 3 .

G t e T i m e Wind Wind C l o u d A i r e . De?tTh Mat. S a l . T u r b . pH O 2 NO2-N DO4-P D i r . S ~ e e d C o v e r T e ~ n . Temp. N03-N O r t h o

Knts: % OC . OC. ~ O/oo NTU my/ 1 n q / l m q / l 1 2 / 1 4 / 7 7 1 3 : 2 0 S 5 - 1 0 ' 1 0 0 2 3 . 0 F TCD 2 0 . 8 3 1 . 0 1 0 . 0 8 . 0 7 .0 0 . 0 0 . 0 1

1 3 : 4 0 NO DATA

1 3 ~ 4 5 NLi 5 -10

NE 5-10 NO DATA

1 3 : 3 0 S 5-10

B o t 2 1 . 8 L Ton 1 9 . 0

Bot 1 7 . 0 H To7 1 3 . 0

R o t F To- 1 8 . 8

9 0 t 1 8 . 5 H Top 1 6 . 0

Rot 9 To:, 1 9 . 0

Bot 1 9 . 0 H To., 20 .0

Bot 22 .0 Top 2 0 . 0 B o t 22 .0 Ton 2 7 . 0 Bot 2 ? . 0

F Ton 2 7 . 9 9 0 t 27 .0

F Tor, 32 .2 Dot 31 .2

3 0 . 0 3 0 . 0 8 . 5 30 .0 8 . 0 30 .0 5 .0

NO 34T4 28 .9 2 . 0 2 7 . 8 2 0 . 0 3 2 . 2 30 .0

N O DATA 2 6 . 0 1 8 . 0 2 5 . 0 1 8 . 0 3 0 . 0 1 8 . 0 3 0 . 0 1 . 0 30 .0 1 8 . 0 3 0 . 0 1 . 0 3q . 1 34 .0 1 9 . 1 3 2 . 3 3 3 . 0 3 2 . 5

7 / 1 1 / ? 8 8 : 2 4 1 0 40 29.C~ E Ton 2 9 . 9 3 3 . 7 8 : 3 3 R o t 2 9 . 8 2 9 . 1

8 / 1 / 7 8 9 : 4 5 S 0 . 5 70 2 9 . 8 H Top 2 9 . 2 3 0 . 0 1 O : O O B o t 2 9 . 0 2 9 . 0

9 / 1 1 / 7 8 1 3 : 4 5 S'J 0-5 0 31 .0 H Ton 3 0 . 2 3 2 . 5 8 . 0 8 . 4 5 7 . 3 0 . 0 . 0 . 0 7 1 4 : 1 0 3 0 t 3 0 . 1 3 2 . 5 1 3 . 0 8 - 5 0 7 . 5 0 . 0 0 . n 3 -

9 / 1 9 / 7 8 1 4 : 0 7 E 5-10 70 3 3 . 0 L Ton 29 .9 32 .9 8 . 5 1 7 . 1 0 . 0 I l i : 1 5 S o t 29 .2 32 .5 8 . 6 0 7 .0 0 . 0 '

1 0 / 3 / 7 8 1 3 : 3 5 SE 0-5 20 3 2 . 0 H T o 3 28 .0 32 .9 3 . 0 8 . 3 8 6 . 5 0 . 0 0 . 0 0 1 3 : 5 0 Bot 2 8 . 8 32 .5 8 . 0 8 . 4 5 5 . 8 0 . 0 0 . 0 0

1 0 / 1 7 / 7 8 1 3 : 3 C NE 5-10 0 2 5 . 5 3 Ton 2 2 . 1 32 .9 5 . 0 8 . 1 2 7 . 4 0 . 0 0 . 1 0 1 3 : 3 9 Aot 2 6 . 8 2 9 . 8 4 . 0 8 . 1 8 6 . 3 . .. .

1 0 / 3 0 / 7 8 1 3 : 4 8 NE 5-10 1 0 Z0.0 E Tee 2 5 . 1 3 3 . 2 2 . 0 8 . 5 0 6 . 7 0 . 0 1 3 : 5 8 R o t 2 5 . 0 3 3 . 2 9 . 0 8 . 4 0 6 . 3

1 1 1 1 4 1 7 8 13 :QO 40 2 9 . 0 H Ton 2 4 . 1 3 2 . 3 1 5 . 0 8 . 1 0 6 . 5 0 . 0 0 . 0 1 3 : 4 9 Rctb-23.fi 3 1 . 9 1 8 . 0 8 . 0 0 6 .2 0.D

TABLE C-5 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c data f o r S t a t i o n # 3

Date Tine Wind Wind C l o u d A i r T i d e D e p t h '31at. S a l . TU%. pH O2 N Q 2 - N PO4-P D i r . S p e e d C o v e r Temp. Temp. N03-N O r t h o

K n t s . % OC . OC. O/oo NTU m5'l . n q / l mell 1 1 / 2 7 / 7 8 1 3 : 5 0 SE 1 0 - 1 5 20 2 5 . 5 E Top 22 .9 3 2 . 1 4 .0 8 . 1 5 .2 0.00 0 . 0 5 ~ '

1 3 : 5 5 Bot 23 .0 3 2 . 0 1 . 0 8 .0 5 . 1 0 . 0 5 1 2 / 1 1 / 7 8 ' 1 3 : 5 5 NW 5-10 1 0 0 1 7 . 0 E TOP 2 1 . 0 33 .5 7 . 0 7 . 9 5 6 . 7 0 . 0 0 0 . 0 8

1 4 : 0 2 9 0 t 2 0 . 5 3 3 . 0 1 1 . 0 7 . 9 6 . 3 0 .08 1/ 4 / 7 9 1 4 : 4 3 NE 5-10 5 0 1 7 . 0 H Top 1 5 . 9 33 .6 7.0 7 . 9 7 .6 0 .00 0 . 1 3

1 4 : 4 6 Bot 1 5 . 9 3 3 . 8 22.0 8 . 0 7 .6 0 .00 0 . 0 9 1 / 2 9 / 7 9 ' 1 4 : 2 9 NW 5-10 1 0 1 5 . 2 H Ton 1 5 . 8 2 9 . 1 6 . 3 7 . 5 5 8 . 4 0 .00 0 . 1 3

B o t 1 5 . 9 2 9 . 0 7.1 7 .10 8.6 0 .00 0 . 1 0

TABLE C-6 Seasonal hydrographic data for Station # 4.

.. . --..- --- . . .

Date m . ilme Wind Wind Cloud Air Tide Depth Wat. Sal. Turb. DH O2 NO2-N ~04-P' Dir. Speed Cover Temp. Temp. N03-N Qrtho

K n t s . % OC. OC. O/oo NTU , 0 2 3 T O T ? C ? c 1 me/l mg/l

A/ 8/75 10:18 SE 10-15 9 . 5 33.0 . v .,

. Act N3 DATA SE 5-10 0 24.5 F To;,

Bot 18.5 32.0 8.9 SW 5-10 10 24.0 F Top 20.0 31.5 3.0

aot 23.0 31.0 10.0 8.8 NU 0-5 100 24.2 F Ton 19.8 33.0 10.0 8.5

Rot 20.0 32,O 6.0 8.0 NE 15-20 80 18.1 F TOD 20.5 33.0 18.0 8.9

~ o t 21.0 32.0 12.0 8.9 SE 5-10 10 23.5 F Top 21.0 32.5 7.0

Rot 22.0 32.0 13.0 8.9 S 5-10 90 30.0 L fop NO DATA

Dot 26.5 31.5 7.0 8.9 4/15/75 10:15 N!d 15-20 100 24.1 F TOD 23.5 33.5 10.0 8.5 9.0

11:45 Rot 24.0 34.0 13.0 8.4 6.0 4/29/75 10:25 ST? 10-15 10 28.0 F Ton 27.0 33.5 10.0 8.5 7.4

11 : 4 5 Bot 25.0 33.5 5/13/75 10:25 S 0-5 100 28.0 F Ton 27.0 32.8

ll:45 Rot 28.0 33.5 9/25/75 13:17 I 10-15 60 23.0 F Top 27.0 30.0

15:02 Bot 27.0 30.0 10/ 2/75 13:25 NW 5-10 50 29.5 F To? 29.0 30.0

14:45 Bot 29.0 29.5 10/ 6/75 13:20 NE 50 30.0 H Top 25.5 32.0

13:40 E0t 2545 32.0 H Top 31.0 25.0 6.0 8.3 11.0

Bot 30.0 26.0 10.0 8.5 9.0 50 30.0 E Ton 26.0 30.0 5.0 8.5 8.5

Dgt 27.0 30.0 5.0 8.3 7.5 11/13/75 13:35 NTd 30-35 0 20.0 L Top 25.0 33.0 50.0 7.8 9.0

14: 35 Roy 25.0 32.0 75.0 8.4 8.5 11/20/75 13:35 S 0-5 10 26.0 H Top 21.5 28.0 36.0 8.5 5.5~

Bot 22.0 29.0 32.0 8.4 10.0 11/30/75 13:30 NIJ 5-10 83 27.5 L To-,, 2 6 . 0 31.0 5.0 8.5 7.5

~~ B o t 2 5 , O 31.0 8.0 8.5 8.0

TA312C C-6 ( c o n t i n u e d ) S e a s o n a l hydrographic d a t a for S t a t i o n # 4.

Date Time Wind Mind Cloud A i r T i d e Depth Wat. S a l . T u r b . p H O2 N02-N Pob-?- D i r . Speed Cove r Temo. T e m ~ . M93-N O r t h o

K n t s . % O c'. - OC'. O/oo :JTU mg/ 1 1 mg/l iTTi,iF5- 1 3 YFf 5-10 23.0 H TOD 23.0 32.0 5.0 8.1 12.0

14:15 Bot 21.5 31.0 5.0 8.2 9.0 12/11/75 14:OO NE 0-5 0 L Top 32.0 19.0 8.5 10.0

14:50 Rot 32.0 20.0 8.5 12.0

Top 4 0 t Top Bot Top Bot Top Bot Ton 30t Top R G ~ To? Rot Ton S o t Ton Rot Ton '3ot TO? B e t Top n o t Ton s o t

Ton 2 o t

TASLC C-6 ( c o n t i n u e d ) S e a s o n a l h v d r o g r a p h i c da ta f o r S t a t i o n # 4 .

-- -.

g a t e Tile Y i n d ? i n 3 C l o u d 4 i r T i d e D e ~ t h Y a t . S a l . T u r b . pf! N02-Y W 4 - D

9 ? r . % e e d C s v e r T e ~ n . m e n n . !1Q3 -?J % t h o Kn t s . % OC.

0 0 C . /oo NTU

~ . ~ m q / l 1 mc/ l , 1 / 1 3 / 7 7 1 3 : 3 0 ? 1 0 - 1 5 30 1 9 . 0 r To? 1 6 . 0 3 0 . 0 8 . 0 8 . 5 7 . 5

R n t 1 5 . 5 3 0 . 0 5 . 0 8 . 3 7 . 0 1 / 2 7 / 7 7 1 3 : 3 C E 0 - 5 90 1 8 . 5 F . To7 5 3C.C 6 . 0 8 . 7 5 . 0

so t Ton i?ot Ton i:ot T o 3 Rot T o n ! j o t Ton ? o t Ton ! l o t Ton Bot T3.1 Boi- ?'or, a 0 t Ton B o t T o 3

not T o n not Tor, Bot T o 3 nc t

" 3 ion Roi To., Rot-

TABLE C-6 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 4.

- - Date Time bli.nd Wind C l o u d A i r T i d e D e n t h '.!at. Sal. T u r S . ? l i ')2 1;12-1J D04-P

D i r . S p e e d C o v e r Yemi , . Tqnn . N r l - V 9 r t h o O c . . . : . . K n t s . _9?___ OC'. O/oo NTU m g / 1 .n;t/i n < / l

1 / 1 2 / 7 8 1 3 : 3 7 ~ 5 0 1 9 . 9 E T o p 1 3 . 5 3 0 . 0 3 . 3 8 . 5 3 . 5 0 . 0 5 0 . 0 3 1 4 : 3 0 3ot 1 6 . 0 2 5 . 0 6 . 0 8 . 2 4 . 0 0 . 0 5 0 . 0 2

1 / 2 6 / 7 8 1 3 : 2 0 0 1 7 . 2 To? 7 3 0 . 5 5 . 0 8 . 3 7 . 0 0 . 0 0 5 0 . 0 7

Rain 5 0-5

S 5'10

3 9 t 1 8 . 0 T o p 1 5 . 0 3ot 1 6 . 0 m l o p 1 3 . 0 R 3 t 1 3 . 0 T o n 1 3 . 5 hot 1 3 . 5 T?3 1 3 . 3 Rot 1 '1 .0 Ton 2 4 . 0 ilot 2 3 . 3 T o p 7 9 . 0 I3ot 2 8 . 2 ". - o n 3 0 . 4 7 o t 3 0 . 5 m 190 3 0 . 5 Rot 3 0 . 5 Ton 3 1 . 4 3ot 3 1 . 4 Toi, 3 1 . 9 3ot 3 2 . 5 T o n 2 9 . 5 '3ot 3 9 . 5 T o p 3 0 . 3 S o t 3 0 . 2 Ton 2 9 . 8 t i o t 2 9 . 6 Ton 2 2 . 9 3o t 2 3 . 0 Ton 2 5 . 5 3ot 2 4 . 8 To:, 2 6 . 1 E o t 2 5 . 9 To? 2 3 . 6 Dot ~ 2 2 . 9

. . I ,

TABLE C-6 ( c o n t i n u e d ) S e a s o n a l h y d r o g r a p h i c d a t a fo r S t a t i o n # b.

Date Time ! i ind Wind C l o u d A i r T i d e , n e p t h k l a t . S a l . Turb . pH O2 N O 2 - N PO -P D i r . S g e e d C o v e r Temp. Temp. NO3-N 0 d h o

K n t s . . % OC. OC. O/oo NTU m ~ / 1 m g / l m g / l , 1 2 / 1 1 / 7 8 1 3 : 1 5 N'Y 5-10 1 0 0 1 8 . 0 H Top 2 0 . 1 32 .2 1 0 . 0 7 . 9 6 . 5 0 .00 0 . 0 7

1 3 : 2 0 Uot 2 0 . 1 3 2 . 2 9;0 7 . 8 5 6 . 4 0 .00 0 . 0 7 1/ 4 / 7 9 1 3 : 4 0 NE 5-10 50 1 6 . 5 F ' T o p 1 3 . 5 3 4 . 9 4 . 0 7 .8 7 .6 0 . 0 5

1 3 : 5 5 B o t 1 3 . 5 3 4 . 9 6 .0 8 . 0 7 . 5 0 . 0 4 1 / 2 9 / 7 9 1 3 : 3 9 N!.l 5-10 0 1 2 . 0 H Top 1 4 . 8 2 5 . 0 1 1 . 5 . 8 . 2 8 . 3 0 . 0 0 0 . 1 2

1 3 : 5 7 Bot 1 4 . 5 2 5 . 0 1 3 . 8 8 .15 8 . 3 0 .00 0 . 0 9

TABLE C-7 S e a s o n a l h y d r o g r a ~ h i c d a t a f o r S t a t i o n # 6 .

D a t e T i a e Vind wind C l o u d A i r T i d e D e p t h Vat. S a l . T u r b . pH 1)2 ! lop-N p % + - P D i r . S ~ e e d Cover Temp. Temn. YO3-N O r t h o

K n t s % O C . O C . O / o o NTU mg/ 1 m g / 1 mg/l 5 / 1 0 / 7 8 6 0 Top 2 8 . 3 3 3 . 2 8 . 5 0 6 . 5 0 . 0 0 . 0

R o t 2 8 . 8 3 3 . 0 8 .15 6 . 1 0 . 0 0 .0 5 / 1 6 / 7 8 1 4 : 1 5 27 .0 TOD 27 .0 3 4 . 0 8 . 2 0 7 . 0 0.0

1 4 . 2 2 Rot 2 6 . 5 3 3 . 8 8 . 2 1 5 . 7 0 . 0 6 / 2 3 / 7 8 1 3 . 2 0 $Is! 1 0 - 1 5 2 8 . 3 TOD 2 7 . 7 3 3 . 8 7 . 0 0 .0 0.0

1 3 : 3 0 Bot 27.9 3 3 . 2 6 . 7 0 .0 0 .0 6 / 3 0 / 7 8 9 : 2 0 5-10 5 0 3 0 . 5 F Top 3 0 . 1 3 3 . 5 6 .2 0 . 0 0 . 0

9 : 2 9 Rot 3 0 . 0 3 3 . 1 6 . 2 0 .0 0 . 0 7 / 5 / 7 8 1 2 : 4 2 0 31 .2 Fi Top . 3 1 . 0 3 2 . 8 6 . 5 0 . 0 0 . 0

1 2 : 5 2 Dot 31.0 2 8 . 0 6 . 4 0 . 0 0 . 0 7 / 1 1 / 7 8 1 2 : 4 4 40 30.6 L T o 3 3 2 . 0 3 3 . 2 6 . 7 0 . 0 0 . 0

1 2 : 5 7 B o t 3 2 . 0 33 .2 6 . 4 0 . 0 0 . 0 8 / 1 / 7 8 9 : 2 4 S 0-5 80 2 8 . 5 H Top 2 9 . 2 3 2 . 8 5 .2 0 . 0 0 . 0

9 : 3 5 Eot 28 .2 3 3 . 7 4 . 9 0 . 0 0 . 0 9 / 1 2 / 7 8 1 4 : 1 5 NW 5-10 1 0 3 3 . 0 E Top 30.4 3 2 . 8 3 . 0 8 .52 7 . 7 0 . 0 0 . 0

1 4 : 35 P o t 3 0 . 2 3 2 . 7 2 . 0 8 . 5 0 7 . 5 0 .0 0 . 0 9 / 1 9 / 7 8 1 4 : 3 1 E 1 0 - 1 5 8 0 3 2 . 0 L Top 2 9 . 1 3 2 . 7 1 2 . 0 8 . 4 2 7 . 9 0 .0 0 . 0

1 4 : 3 5 Rot 2 9 . 5 3 2 . 6 8 . 0 8 . 5 0 7 . 7 0 .O 1 0 / 1 7 / 7 8 14:l.S NE 5-10 0 2 4 . 5 H Top 2 3 . 1 3 3 . 0 2 . 0 8 . 4 0 6 . 8 0 .0 0 .10

1 4 : 2 5 Bot 2 3 . 1 3 2 . 9 3 . 0 8 . 4 0 6 . 2 0 . 1 3 1 1 / 1 4 / 7 8 1 4 : 1 5 4 0 28 .0 H Top 2 6 . 1 3 3 . 9 1 4 . 0 8 . 1 5 6 . 3 0 . 0 0 . 0

1 4 : 2 4 Bo t 26 .2 3 1 . 8 1 3 . 0 8 . 1 0 6 . 2 1 2 / 1 1 / 7 8 1 4 : 3 0 lJi? 5 -10 1 0 0 1 7 . 0 I. Top 2 1 . 0 3 3 . 3 8 . 0 7 . 9 5 7 . 0 0 .00 0 . 0 5

1 4 : 34 9 0 t 2 1 . 2 33 .2 9 . 0 8 .00 5 .0 0 .00 0 . 0 6 1/ 4 / 7 9 14 :QO NE 1 0 - 1 5 50 1 6 . 5 F Ton 1 3 . 2 3 2 . 5 1 0 . 0 7 . 8 0 7 . 5 0 . 0 0 0 . 0 8

1 4 : 1 0 Bot 1 3 . 0 3 2 . 9 9 . 0 7 . 9 0 7 . 3 0 .04 0 . 0 7 1 1 2 9 1 7 9 1 3 : 5 5 NB 1 0 - 1 5 1 0 1 1 . 8 H Top 1 5 . 2 2 8 . 9 3 3 . 0 7 . 5 5 . 7 .7 0 . 0 0 0 . 0 9

1 4 : 0 6 Dot 1 5 . 0 3 1 . 1 35 .0 7 . 7 5 7.6 0 . 0 3 0 . 0 9

TABLE C-8 S e a s o n a l h y d r o g r a p h i c d a t a f o r S t a t i o n # 7.

Date Time Wind Wind Cloud A i r T i d e Depth Wat. S a l . Tu rb . p H O 2 N02-N PO4-P D i r . Speed Cover T e m ~ . T p p . NO N O r t h o

Knt s . % OC: C . /OO NTU mg/ 1 m i 7 1 m g / l 5 / 1 0 / 7 8 7 0 Top 29 .8 33.6 8.20 6.4 0.0 0.0'

30t Top Bot Top Bot Top 90 t Top Bot Top Rot TO? Rot Top Dot Top Rot Top Rot Top Rot Top Rot

D i s c u s s i o n

T h i s water m o n i t o r i n g program was i n t e n d e d t o d e f i n e t h e

s e a s o n a l v a r i a t i o n s f o r a v a r i e t y o f p h y s i c a l and c h e m i c a l fac-

t o r s and t o be u s e d as a b a s e l i n e f o r f u t u r e c o m p a r i s o n . Monthly

a v e r a g e s were computed t o l e s s e n t h e v a r i a t i o n o f i n d i v i d u a l

samples . These a v e r a g e s are r e p o r t e d i n T a b l e s C-9 t h r o u g h

C - 1 5 .

Annual a v e r a g e s were computed and are r e p o r t e d f o r a l l

s t a t i o n s i n T a b l e C-16. These a n n u a l a v e r a g e s are b a s e d on

o n l y 9 months s i n c e t h e summer months were se ldom sampled . The

months o f J u n e , J u l y , and August were o m i t t e d . Only s t a t i o n s 1,

2 , 3 , and 4 are r e p o r t e d as t h e o t h e r t h r e e s t a t i o n s were n o t

i n i t i a t e d u n t i l A p r i l o f 1978 .

F i g u r e s C-2 t h r o u g h C - 7 show t h e month ly a v e r a g e s g r a p h i -

c a l l y . Nitrates and p h o s p h a t e s were o m i t t e d f rom t h e monthly

g r a p h s .

F i g u r e C-8 g r a p h i c a l l y r e p r e s e n t s t h e a n n u a l a v e r a g e s f o r

e a c h s t a t i o n .

TABLE C-9

Monthly a v e r a g e s o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 1

Date Rain N Depth Temp. Sal. Turb . pH O2 NO2-N PO4-P Fall NO3-N Ortho In. OC. O/oo NTU mx/1 1 mg/l

1/75 0.4 ( 2 ) TOP 23.3 28.8 13.5 8.0 3.2

2/75 1.7 (2) Top 20.6 22.5 20.5 7.8 4.1 Bot 23.3 27.0 18.0 8.1 3.8

3/75 1.0 (1) Top 23.5 29.5 22.0 8.1 3.2 Bat 25.5 30.0 22.0 8.1 4.6

4/75 0.7 (2) Top 25.8 25.8 19.5 8.0 3.5 Bot 26.0 27.3 23.5 8.2 4.2

5/75 4.7 (2) Top 26.5 30.0 16.5 8.2 4.2 Bot 28.0 30.3 14.0 8.2 5.8

6/75 4.3 (0)

9/75 6.2 ( 2 ) Top Bot

10/75 2.4 (3) Top Bot

11/75 0.5 (4) Top B 0 t

1?/75 2.0 (3) Top Hot

1/76 2.7 (1) Top Bot

2/76 0.3 (1) Top Bot

3/76 0.3 4 Top

4/76 1.7 (1) Top Bot

5/76 5.1 (1) Top

9/76 4.2 (2) Top 31.0 18.0 22.0 8.4 7.5 Bot 31.0 24.5 28.0 8.4 8.0

10/76 1.7 (2) Top 27.7 15.0 30.5 8.2 3.8 Bot 27.0 16.5 31.0 8.2 3.3

11/76 1.6 (2) Top 23.5 19.0 21.5 8.2 6.8 Bot 23.3 19.0 21.5 8.2 6.8

12/76 1.4 (1) Top 24.5 16.0 15.0 8.5 6.0 Bot 24.5 16.0 15.0 8.5 6.0

TABLE ( C o n t i n u e d )

M o n t h l y a v e r a g e s o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 1. -.

D a t e R a i n N D e p t h Temp. S a l . T u r b . p H 0, NO2-N PO4-P F a l l NO3-N O r t h o

I n . O C . O/oo NTU m g / l m g / l mg/1, 1 / 7 7 2 . 5 ( 3 ) T o p 1 7 . 3 4 . 3 3 9 . 0 7 . 9 6 . 7

Bot 1 7 . 3 4 . 3 3 9 . 0 7 . 9 6 . 7 2 / 7 7 1 . 4 ( 2 ) T o p 1 8 . 3 1 2 . 5 2 0 . 0 8 . 1 6 . 5

B o t 1 8 . 3 1 2 . 5 2 0 . 0 8 . 1 6 . 5 3 / 7 7 1.1 ( 2 ) T o p 2 8 . 0 2 2 . 0 2 1 . 5 8 . 1 8 . 0 0 . 0 0 . 4 3

B o t 2 5 . 0 2 3 . 0 2 3 . 0 8 . 2 8 . 0 0 . 0 0 . 4 3 4 / 7 7 1 . 0 ( 0 )

5 / 7 7 1 . 2 ( 3 ) T o p 2 8 . 2 2 8 . 5 2 9 . 0 8 . 3 5 . 3 0 . 2 0 B o t 2 8 . 2 2 8 . 5 2 9 . 0 8 . 3 5 . 3 0 . 2 0

6 / 7 7 5 . 7 ( 0 )

7 / 7 7 6 . 9 ( 1 ) T o p 3 3 . 0 1 8 . 0 4 5 . 0 8 . 6 9 . 5 0 . 0 0 . 3 0 B o t 3 3 . 0 1 8 . 0 4 5 . 0 8 . 6 9 . 5 0 . 0 0 . 3 0

8 / 7 7 1 2 . 5 ( 6 )

P / 7 7 7 . 9 ( 2 ) T o p 3 0 . 5 1 5 . 5 4 7 . 5 8 . 1 3 . 0 0 . 0 0 . 3 0 B o t 3 0 . 8 1 4 . 5 4 9 . 5 8 . 1 3 . D 0 . 0 0 . 3 0

1 0 / 7 7 0 . 5 ( 3 ) T o p 2 7 . 2 i 7 . 3 1 6 . 3 8 . 0 5 .E 0 . 0 0 . 0 7 Bat 2 7 . 5 2 9 . 7 4 8 . 3 6 . 0 U.0 0 . 0 9

1 1 / 7 7 2 . 0 ( 2 ) T o p 2 3 . 0 2 4 . 3 1 8 . 5 8 . 3 6 . 0 0 . 2 0 B o t 2 3 . 0 2 3 . 5 1 8 . 5 8 ; l 5 . 3 0 . 2 3

1 2 / 7 7 6 . 7 ( 0 )

1 / 7 8 3 . 4 ( 2 ) T o p 1 5 . 1 0 . 7 1 8 . 0 7 . 6 7 . 3 0 . 0 2 0 . 0 8 B o t 1 5 . 1 0 . 7 1 8 . 0 7 . 6 7 . 3 0 . 0 2 0 . 0 8

2 / 7 8 4 . 3 ( 3 ) T o p 1 9 . 8 1 6 . 7 2 8 . 0 7 . 9 8 . 0 0 . 0 4 ~ 3 ; 1 9 . 5 1 7 . 2 1 6 . 5 7 . 8 8 . 0 0 . 0 5

3 / 7 8 3 . 3 (1) T o p 2 0 . 0 2 4 . 0 8 . 0 2 . 0 0 . 0 7 B o t 2 0 . 0 2 4 . 0 7 . 9 2 . 0 0 . 0 7

TABLE C-10

M o n t h l y averages oh h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 11. ---- D a t e R a i n N D e p t h T e m p . S a l . T u r b . pH O2 N O 2 - N PO4-P

F a l l NO3-N O r t h o I n . O C . O/oo NTU m g / l m g / l m g / l

4 / 7 8 0 . 8 ( 2 ) T o p 2 6 . 1 3 2 . 0 8 . 0 7 . 0 0 . 0 B o t 2 4 . 3 3 1 . 5 8 . 0 6 . 7 0 . 0

5 / 7 8 5 . 0 ( 2 ) T o p 2 8 . 8 3 3 . 2 8 . 1 6 . 1 0 . 0 0 . 0 B o t 2 7 . 5 3 2 . 8 7 . 8 5 . 3 0 . 0 0 . 0

6 / 7 8 6 . 9 ( 3 ) T o p 3 0 . 0 2 7 . 3 5 . 1 0 . 0 0 . 0 B o t 3 0 . 2 2 9 . 5 4 . 6 0 . 0 0 . 0

7 / 7 8 1 0 . 8 ( 4 ) T o p 3 0 . 7 3 1 . 5 4 . 9 0 . 0 0 . 0 Bot 3 0 . 3 3 1 . 6 3 . 4 0 . 0 0 . 0

8 / 7 8 6 . 6 ( 1 ) T o p 2 9 . 0 2 7 . 0 3 . 3 0 . 0 0 . 0 B o t 3 0 . 0 2 7 . 0 3 . 1 0 . 0 0 . 0

9 / 7 8 3 . 0 ( 2 ) T o p 3 0 . 6 3 2 . 2 1 1 . 0 8 . 3 7 . 3 0 . 0 0 . 0 9 B o t 3 0 . 1 3 2 . 0 2 0 . 0 8 . 3 6 . 2 0 . 0 0 . 1 5

1 0 / 7 8 2 . 8 ( 3 ) T o p 2 6 . 5 3 2 . 1 7 . 0 8 . 3 5 . 7 0 . 0 0 . 1 3 B o t 2 5 . 7 3 1 . 7 9 . 7 8 . 2 5 . 4 0 . 1 2

1 1 / 7 8 0 . 5 ( 2 ) T o p 2 3 . 3 3 3 . 3 9 . 5 8 . 1 5 . 4 0 . 0 0 . 0 6 B o t 2 2 . 7 3 3 . 1 3 2 . 0 7 . 9 6 . 0 0 . 2 2

1 2 / 7 8 2 . 7 (1) T o p 2 1 . 0 3 2 . 5 9 . 0 7 . 9 5 . 3 0 . 0 0 0 . 0 9 B o t 2 1 . 0 3 3 . 0 1 4 . 0 7 . 8 4 . t 0 . 0 0 0 . 0 7

TABLE C-ll

M o n t h l y a v e r a g e s of h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 2 .

D a t e R a i n N D e p t h T e m p . Sal. T u r b . pH O2 NO2-N PO4-P Fall NO3-N O r t h o

I n . O C . O/oo NTU m g / l 1 m g / l 1 / 7 5 0 . 4 ( 2 ) T o p 2 0 . 5 3 3 . 3 1 0 . 5 7 . 6 0 .2 '9 0 . 0 6

B o t 2 1 . 5 3 2 . 3 7 . 0 9 . 1 2 / 7 5 1 . 7 ( 2 ) T o p 1 9 . 9 3 1 . 5 1 0 . 0 8 . 3 7 . 4

~ o t 2 0 . 6 3 1 . 5 9 . 0 8 . 4 9 . 8 3 / 7 5 1 . 0 ( 1 ) T o p 2 1 . 0 3 2 . 0 9 . 0 8 . 2 5 . 8 0 . 1 8 0 . 0 2

B o t 2 2 . 5 3 1 . 0 9 . 5 8 . 5 1 1 . 4 0 . 7 ( 3 ) T o p

B o t 4 . 7 (1) T o p

B o t 4 . 3 ( 0 )

6 . 2 ( 1 ) T o p B o t

2 . 5 ( 4 ) T o p B o t

0 . 5 ( 3 ) TOD BO t

2 . 0 ( 3 ) T o p B o t

2 / 7 6 0 . 3 ( 1 ) T o p 1 9 . 0 3 1 . 0 8 . 2 6 . 5 B o t 1 8 . 0 3 1 . 0 8 . 2 6 . 5

3 / 7 6 0 . 3 ( 5 ) T o p 2 6 . 6 3 1 . 5 2 0 . 0 8 . 5 1 0 . 0 ~ o t 2 5 . 9 3 1 . 5 1 7 . 3 8 . 5 9 . 8

4 / 7 6 1 . 7 (1) T o p 2 8 . 0 3 2 . 0 8 . 3 1 1 . 0 B o t 2 8 . 0 3 2 . 0 8 . 5 1 0 . 5

5 / 7 6 5 . 1 ( 2 ) T o p 2 7 . 5 3 1 . 5 8 . 4 1 0 . 5 B o t 2 7 . 3 3 1 . 3 8 . 4 1 0 . 3

6 / 7 6 7 . 3 ( 0 )

9 / 7 6 4 . 2 ( 2 ) T o p 3 1 . 3 3 1 . 3 8 . 5 8 . 4 9 . 3 B o t 3 1 . 0 3 1 . 3 1 2 . 5 8 . 4 9 . 5

1 0 / 7 6 1 . 7 ( 2 ) T o p 2 6 . 2 3 3 . 5 1 4 . 3 8 . 6 9 . 5 B o t 2 6 . 0 3 3 . 8 1 5 . 0 8 . 6 1 0 . 0

1 1 / 7 6 1 . 6 ( 2 ) Top 2 0 . 3 3 1 . 8 9 . 0 8 . 3 7 . 3 B O ~ 2 1 . 5 3 2 . 0 1 0 . 5 8 . 3 7 . 3

1 2 / 7 6 1 . 4 (1) T o p 2 2 . 0 3 2 . 0 9 . 0 8 . 4 5 . 0 Bot 2 1 . 0 3 2 . 0 1 3 . 0 8 . 5 6 . 0

TABLE ( C o n t h u e d )

M o n t h l y averages of h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 2 . - --

Date R a i n N D e p t h Temp. S a l . T u r b . pH O 2 NO2-N PO4-P F a l l N03-N O r t h o

I n . O C . O/oo NTU m i l 1 m ~ / 1 m g / l . 1 / 7 7 2 . 5 ( 2 ) T o p 1 6 . 3 2 9 . 8 6 . 0 8 . 5 7 . 3

B o t 1 5 . 8 2 7 . 5 6 . 3 8 . 6 7 . 0 2 / 7 7 1 . 4 ( 2 ) T o p 1 6 . 0 3 1 . 5 8 . 0 8 . 5 9 . 5

B o t 1 6 . 5 3 1 . 5 8 . 5 8 . 5 9 . 0 3 / 7 7 1.1 ( 1 ) T o p 2 5 . 0 3 1 . 0 1 8 . 0 8 . 5 8 . 5 0 . 0 0 . 0 3

S o t 2 5 . 0 3 1 . 0 2 4 . 0 8 . 4 8 . 0 0 . 0 0 . 1 3 4 / 7 7 1 . 0 ( 3 ) T o p 2 3 . 5 3 2 . 7 1 3 . 7 8 . 8 6 . 5 0 . 0 0 . 0 8

B o t 2 3 . 5 3 2 . 7 1 3 . 7 8 . 8 6 . 5 0 . 0 0 . 0 8

9 / 7 7 7 . 9 ( 2 ) T o p 3 0 . 0 3 0 . 5 1 3 . 5 8 . 5 7 . 0 0 . 0 0 . 1 2 B o t 3 1 . 5 3 0 . 5 1 9 . 0 8 . 5 5 . 8 0 . 0 0 . 1 0

1 0 / 7 7 0 . 5 ( 2 ) T o p

1 / 7 8 3 . 4 ( 3 ) T o p - B o t

2 / 7 8 4 . 3 ( 1 ) T o p B o t

3 / 7 8 3 . 3 ( 0 )

5 / 7 8 5 . 0 ( 1 ) Top 2 8 . 0 3 4 . 1 B o t 2 7 . 8 3 4 . 1

6 / 7 8 6 . 9 ( 2 ) TOD 3 1 . 4 2 5 . 3

7 / 7 7 1 0 . 8 ( 2 ) T o n 2 9 . 4 3 2 . 6 B;: 2 9 . 4 3 2 . 5

8 / 7 8 6 . 6 (1) T o p 2 9 . 5 3 0 . 5 B o t 2 9 . 5 3 0 . 5

9 / 7 8 3 . 0 (1) TOD 2 9 . 2 3 2 . 9 3 - -

1 0 / 7 8 2 . 8 ( 3 ) T o p 2 5 . 7 3 2 . 7 3 . 3 8 . 3 6 . 8 0 . 0 0 . 0 3 - Bot 2 5 . 4 3 2 . 6 4 . 0 8 . 4 7 . 0 0 . 0 0 . 0 5

1 1 / 7 8 0 . 5 ( 2 ) T o p 2 3 . 2 3 3 . 8 1 2 . 0 8 . 1 7 . 1 0 . 0 0 . 0 3 B o t 2 3 . 0 3 3 . 8 1 4 . 0 8 . 1 6 . 3 0 . 0 4

1 2 / 7 8 2 . 7 ( 1 ) T o p 2 1 . 0 3 3 . 2 9 . 0 8 . 0 6 . 6 0 . 0 0 . 0 8 B o t 2 1 . 0 3 3 . 1 8 . 0 8 . 0 6 . 4 0 . 0 7 ,

- C-40

TABLE C-12

Monthly a v e r a g e s o f h y d r o g r a p h i c p a r a m e t e r s for S t a t i o n # 3.

Date Rain N Depth Temp. S a l . Turb. pH O2 NO2-N PO4-P Fall o NO3-N Ortho

I n . O C . / oo NTU mg/l mg/l mg/l 1/75 0.4 ( 2 ) Top 18.0 32.7 9.0 9.2

B O ~ 18.0 32.3 9.5 8.6 9.0 2/75 1.7 ( 2 ) Top 19.0 32.5 5.0 8.5 8.0

B o t 18.0 31.0 5.0 8.5 5.5 - - ~~ ~ ~ ~

3/75 1.0 (2) Top 21.6 31.6 15.0 8.3 7.1 Bot 22.5 32.3 13.5 8.5 7.2

4/75 0.7 (2) Top 25.1 33.5 8.7 7.4 8.1 B O ~ 25.0 34.8 13.5 8.5 5.5

5/75 4.7 (1) Top 28.2 32.0 17.0 8.4 6.0 Bot -- -- -- -- --

6/75 4.3 (0)

9/75 6.2 (1) Top Bot

10/75 2.4 (5) Top Bot

11/75 0.5 (3) Top Bot

12/75 2.0 (3) Top Bot

2/76 0.3 ( 3 ) Top Bot

3/76 0.3 (4) Top Bot

4/76 1.7 (2) Top

9/76 4.2 (3) Top 3 0 . 5 32.7 9.3 8.4 9.8 Bot 29.0 33.0 21.5 8.3 7.5

10/76 1.7 (2) Top 25.9 33.3 13.5 8.5 6.0 Bot 26.0 33.5 22.0 8.5 4.0

11/76 1.6 (2) Top 21.3 31.0 9.0 8.3 6.0 Bot 20.5 32.0 5.0 8.4 7.8

12/76 1.4 (1) Top 21.0 30.0 8.0 8.5 6.5 - Bot 21.0 30.0 10.0 8.5 5.5


M o n t h l y a v e r a g e s o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 3 .

bate R a i n N D e p t h Temp. S a l . T u r b . p H O2 NO2-N PO4-P F a l l NO3-N O r t h o

I n . OC. O/oo NTU m g / 1 1 m g / 1 1 / 7 7 2 . 5 ( 2 ) T o p 1 5 . 5 3 0 . 0 1 3 . 5 8 . 5 8 . 0

B o t 1 5 . 5 3 2 . 0 1 6 . 0 8 . 5 7 . 8 2 / 7 7 1 . 4 ( 2 ) T o p 1 4 . 3 3 1 . 0 5 . 5 8 . 5 8 . 8

B o t 1 1 . 0 3 1 . 0 1 9 . 0 8 . 5 8 . 5 3 / 7 7 1.1 ( 2 ) TOD 2 2 . 3 3 0 . 5 1 7 . 0 8 . 5 8 . 8 0 . 0 0 . 0 7

BO t

TOP B o t

T o p B o t

TOP B o t T o p B o t TOP B o t TOP B o t

1 /7 .8 3 . 4 ( 2 ) T o p 1 6 . 0 3 0 . 0 6 . 8 8 . 6 2 . 0 0 . 0 5 0 . 0 4 B o t 1 7 . 0 3 0 . 0 8 ; O 8 . 7 5 . 5 0 . 0 2 0 . 0 7

2 / 7 8 4 . 3 ( 3 ) T o p 1 7 1 9 2 9 . 0 1 6 . 7 8 . 2 8 . 0 0 . 0 0 . 0 1 B o t 1 8 . 8 2 6 . 4 1 9 . 0 8 . 4 7 . 8 0 . 0 0 . 0 1

3 / 7 8 3 . 3 (1) T o p 2 0 . 0 3 0 . 0 1 8 . 0 8 . 4 8 . 0 0 . 0 0 . 0 2 B o t 2 2 . 0 3 0 . 0 1 . 0 8 . 3 6 . 0 0 . 0 0 . 0 1

4 / 7 8 0 . 8 (1) T o p 2 5 . 2 3 2 . 5 8 . 3 7 . 9 0 . 0 5 B o t 2 4 . 0 3 2 . 5 8 . 2 6 . 8 0 . 0 5

5 / 7 8 5 . 0 (1) T o p 2 7 . 0 3 4 . 1 8 . 4 7 . 2 0 . 0 0 . 0 B o t 2 7 . 0 3 4 . 0 8 . 2 5 . 8 0 . 0 0 . 0

6 / 7 8 6 . 9 ( 2 ) T o p 3 0 . 1 2 6 . 1 5 . 9 0 . 0 0 . 0 B o t 2 9 . 1 3 2 . 4 5 . 3 0 . 0 0 . 1 2

7 / 7 8 1 0 . 8 ( 1 ) T o p 2 9 . 9 3 3 . 7 5 . 4 0 . 0 0 . 0 B o t 2 9 . 8 2 9 . 1 5 . 1 0 . 0 0 . 2 0

8 / 7 8 6 . 6 ( 1 ) T o p 2 9 . 2 3 0 . 0 5 . 3 0 . 0 0 . 0 B o t 2 9 . 0 2 9 . 0 2 . 6 0 . 0 0 . 0

9 / 7 8 3 . 0 ( 2 ) T o p 3 0 . 1 3 2 . 7 8 . 0 8 . 5 7 . 2 0 . 0 0 . 0 7 B o t 2 9 . 7 3 2 . 5 1 3 . 0 8 . 6 7 . 3 0 . 0 0 . 0 3

1 0 / 7 8 2 . 8 ( 3 ) T o p 2 5 . 1 3 3 . 0 3 . 3 8 . 3 6 . 9 0 . 0 0 . 0 5 B o t 2 6 . 9 3 1 . 8 7 . 0 8 . 3 6 . 1 0 . 0 0 . 0

1 1 / 7 8 0 . 5 ( 2 ) T o p 2 3 . 5 3 2 . 2 9 . 5 8 . 1 5 . 9 0 . 0 0 0 . 0 3 B o t 2 3 . 3 3 3 . 0 9 . 5 8 . 0 5 . 7 0 . 0 3

1 2 / 7 8 2 . 7 ( 1 ) T o p 2 1 . 0 3 3 . 5 7 . 0 8 . 0 6 . 7 0 . 0 0 0 . 0 8 - B o t 2 0 . 5 33,O 1 1 . 0 7 . 9 6 . 3 0 . 0 8

C-42

TABLE C - 1 3 '


- D a t e R a i n N D e p t h Temp. S a l . T u r b . pH 0 2 NO2-N PO4-P

F a l l NO3-N O r t h o I n . OC. O/oo NTU m g / l 1 m n / l

1 / 7 5 0 . 4 ( 3 ) T o p 1 9 . 8 3 2 . 3 4 . 0 8 . 9 1 1 . 5 B o t 2 0 . 7 3 1 . 5 1 0 . 0 8 . 8 9 . 4

2 / 7 5 1 . 7 ( 2 ) T o p 2 0 . 2 3 3 . 0 1 4 . 0 8 . 7 6 . 2 B o t 2 0 . 5 3 2 . 0 9 . 0 8 . 5 6 . 6

3 / 7 5 1 . 0 ( 1 ) T o p 2 1 . 0 3 2 . 5 7 . 0 6 . 0 B o t 2 2 . 0 3 2 . 0 1 3 . 0 8 . 9 8 . 2

4 / 7 5 0 . 7 ( 3 ) T o p 2 5 . 3 3 3 . 5 1 0 . 0 8 . 5 8 . 2 B o t 2 5 . 2 3 3 . 0 1 0 . 7 8 . 3 7 . 5

5 / 7 5 4 . 7 (1) T o p 2 7 . 0 3 2 . 8 1 3 . 0 8 . 5 6 . 2 B o t 2 8 . 0 3 3 . 5 1 0 . 5 8 . 5 6 . 8

6 / 7 5 4 . 3 ( 8 ) - r , :

6 . 2 ( 1 ) T o p B o t

2 4 4 T o p B o t

0 . 5 ( 3 ) T o p B o t

2 . 0 ( 2 ) T o p B o t

0 . 3 ( 4 ) T o p B o t

0 . 3 ( 1 ) T o p B o t

1 . 7 ( 1 ) T o p B o t

5 . 1 (1) T o p B o t

7 . 3 ( 0 )

9 / 7 6 4 . 2 ( 2 ) T o p 3 1 . 5 3 1 . 8 8 . 5 8 . 5 8 . 0 B o t 3 0 . 0 3 1 . 3 1 4 . 0 8 . 7 8 . 3

1 0 / 7 6 1 . 7 ( 2 ) T o p 2 4 . 8 3 3 . 5 1 6 . 5 8 . 6 9 . 5 B o t 2 5 . 0 3 3 . 0 1 4 . 0 8 . 7 9 . 0

1 1 / 7 6 1 . 6 ( 2 ) T o p 2 0 . 0 3 1 . 8 1 8 . 5 8 . 4 6 . 5 B o t 2 0 . 3 3 1 . 0 . 9 u 0 8 . 4 7 . 3

1 2 / 7 6 1 . 4 ( 0 )



D a t e , R a i n N D e p t h Temp. S a l . T u r b . pH O 2 NO?-N PO4-P F a l l NO3-N Ortho

I n . @ / C O/oo NTU m g / l m g / l m g / l 1 / 7 7 2 . 5 7 3 ) T o p 1 6 ; 5 3 0 . 0 5 . 3 8 . 6 5 . 8

B o t 1 6 . 0 3 0 . 3 4 . 5 8 . 5 5 . 5 2 / 7 7 1 . 4 ( 2 ) T o p 1 6 . 8 3 0 . 0 6 . 5 8 . 6 8 . 3

B o t 1 5 . 3 3 1 . 0 6 . 5 8 . 6 9 . 5 3 / 7 7 1.1 ( 2 ) T o p 2 5 . 5 3 2 . 5 1 9 . 0 8 . 3 6 . 0 0 . 0 0 . 1 0

B o t 2 5 . 0 3 2 . 3 1 1 . 5 8 . 5 7 . 3 0 . 0 4 / 7 7 1 . 0 ( 1 ) T o p 2 3 . 5 3 2 . 0 6 . 0 8 . 7 7 . 0 0 . 0 0 . 1 2

B o t 2 3 . 0 3 2 . 5 9 . 0 9 . 1 7 . 5 0 . 0 0 1 5 / 7 7 1 . 2 ( 3 ) T o p 2 6 . 0 3 4 . 3 1 1 . 3 8 . 4 7 . 0 0 . 0 1 0 . 0 7

B o t 2 6 . 3 3 4 . 3 1 3 . 7 8 . 3 7 . 2 0 . 0 2 0 . 0 7 6 / 7 7 5 . 7 ( 0 )

7 k 7 7 6 . 9 (1) T o p 3 2 . 0 3 4 . 0 1 2 . 0 8 . 6 5 . 0 0 . 1 3 B o t 3 1 . 5 3 4 . 0 1 3 . 0 8 . 6 6 . 0 0 . 1 3

8 / 7 7 1 2 . 5 ( 0 )

T o p 3 0 . 0 B o t 2 9 . 0 T o p 2 5 . 5 B o t 2 5 . 5

2 2 . 5 B o t - : . 2 3 . 5 T o p 1 7 . 8 B o t 1 7 . 2

T o p 1 5 . 3 B o t 1 7 . 0 T o p 1 3 . 8 B o t 1 4 . 2 T o p 1 9 . 0 B o t 1 9 . 0 T o p 2 4 . 0 B o t 2 3 . 3 T o p 2 9 . 4 B o t 2 8 . 2 T o p 3 0 . 7 B o t 3 0 . 5 T o p 3 1 . 2 B o t 3 1 . 0 T o p 2 9 . 5 B o t 2 9 . 5 T o p 3 0 . 1 B o t 2 9 . 9 T o p 2 4 . 0 B o t 2 3 . 9 T o p 2 4 . 9 B o t 2 4 . 4 T o p 2 0 . 1

TABLE C - l 4


D a t e R a i n N D e p t h Temp. S a l . T u r b . pH O2 NO2-N PO4-P F a l l NO3-N O r t h o

I n . O C . O/oo NTlI m g / l m g / l m g / l 5 / 7 8 5 . 0 ( 2 ) T o p 2 7 . 7 3 3 . 6 8 . 4 6 . 8 0 . 0 0 . 0

6 / 7 8 6 . 9 ( 2 ) T o p 2 8 . 9 3 3 . 7 B o t 2 9 . 0 3 3 . 2

7 / 7 8 1 0 . 8 ( 2 ) T o p 3 1 . 5 3 3 . 0

B O ~ 2 8 . 2 3 3 . 7 4 . 9 0 . 0 0 . 0 9 / 7 8 3 . 0 ( 2 ) T o p 2 9 . 8 3 2 . 8 7 . 5 8 . 5 7 . 8 0 . 0 0 . 0

B o t 2 9 . 9 3 2 . 7 5 . 0 8 . 5 7 . 6 0 . 0 0 . 0 . .

1 0 / 7 8 2 . 8 ( 1 ) T o p 2 3 . 1 3 3 . 0 2 . 0 8 . 4 6 . 8 0 . 0 0 . 1 0 B o t 2 3 . 1 3 2 . 9 3 . 0 8 . 4 6 . 2 0 . 1 3

1 1 / 7 8 0 . 5 ( 1 ) T o p 2 6 . 1 3 3 . 9 1 4 . 0 8 . 2 6 . 3 0 . 0 0 . 0 B o t 2 6 . 2 3 1 . 8 1 3 . 0 8 . 1 6 . 2

1 2 / 7 8 2 . 7 ( 1 ) T o p 2 1 . 0 3 3 . 3 8 . 0 8 . 0 7 . 0 0 . 0 0 0 . 0 5 B o t 2 1 . 2 3 3 . 2 9 . 0 8 . 0 5 . 0 0 . 0 0 0 . 0 6 .

TABLE C-15


Date R a i n N D e p t h Temp. S a l . T u r b . pH O2 NO2-N PO4-p F a l l NO?-N O r t h o

I n . . O C . O / o o NTU m g / l 1 m g / l , 5 / 7 8 5 . 0 ( 1 ) T o p 2 9 . 8 3 3 . 6 8 . 2 6 . 4 0 . 0 0 . 0

B o t 2 8 . 9 3 3 . 1 8 . 2 5 . 9 0 . 0 2 0 . 0 6 / 7 8 6 . 9 ( 2 ) T o p 2 8 . 8 3 2 . 9

B o t ' 2 8 . 7 3 3 . 4 7 / 7 8 1 0 . 8 ( 3 ) T o p 3 0 . 3 3 1 . 6

B o t 3 0 . 4 3 2 . 2 8 / 7 8 6 . 6 ( 1 ) T o p 2 9 . 3 2 9 . 5

B o t 2 9 . 5 3 2 . 2 9 / 7 8 3 . 0 ( 0 )

1 0 / 7 8 2 . 8 ( 2 ) T o p 2 7 . 2 3 2 . 6 2 . 5 8 . 4 6 . 6 0 . 0 0 . 1 0 B o t 2 6 . 6 3 2 . 7 3 . 5 8 . 5 6 . 3 0 . 0 0 . 1 3

1 1 / 7 8 0 . 5 ( 0 )

1 2 / 7 8 2 . 7 ( 1 ) T o p 1 9 . 9 3 2 . 4 6 . 0 8 . 1 7 . 6 0 . 0 0 2 0 . 0 5 - Bp_t 1 9 . 9 3 2 . 2 5 . 0 8 . 2 7 . 5 0 . 0 0 0 . 0 5

TABLE C-16

A n n u a l a d j u s t e d a v e r a g e s f o r h y d r o g r a p h i c p a r a m e t e r s . ( B a s e d o n 9 m o n t h s )

Date R a i n D e p t h T e m p . S a l . T u r b . pH O 2 N O 2 - N P 0 4 - P F a l l N03:N O r t h o

T n . 0 O/oo NTU me/l 1 mg/1

S t a t i o n # 1.

BO t 2 5 . 8 2 0 . 5 2 2 . 9 8 . 3 6 . 4 1 9 7 7 4 8 . 4 T o P 2 4 . 5 1 9 . 1 2 4 . 8 8 . 1 6 . 1 0 . 0 0 . 2 5

B o t 2 4 . 1 2 0 . 4 2 5 . 1 8 . 2 6 . 0 0 . 0 0 . 2 6

S t a t i o n # 2 .

1 9 7 5 3 9 . 2 T o P 2 4 . 4 3 2 . 1 8 . 9 8 . 4 8 . 3 B o t 2 4 . 3 3 1 . 6 1 1 . 7 8 . 5 1 0 . 1

1 9 7 6 3 7 . 6 TOP 2 4 . 2 3 1 . 7 1 0 . 8 8 . 4 8 . 5 B o t 2 3 . 9 3 1 . 7 1 2 . 0 8 . 4 8 . 6

1 9 7 7 4 8 . 4 TOP 2 3 . 3 3 1 . 8 9 . 4 8 . 4 6 . 4 0 . 0 0 2 0 . 0 8 BO t 2 3 . 4 3 1 . 5 1 0 . 3 8 . 4 6 . 3 0 . 0 0 2 0 . 0 9

1 9 7 8 5 0 . 3 TOP 2 3 . 0 3 1 . 6 8 . 3 8 . 3 7 . 4 0 . 0 0 2 0 . 0 5 B o t 2 2 . 7 3 2 . 0 9 . 4 8 . 3 7 . 7 0 . 0 0 2 0 . 0 6

S t a t i o n # 3 .

1 9 7 5 3 9 . 2 TOP B o t

1 9 7 6 3 7 . 6 T o P B o t

1 9 7 7 4 8 . 4 TOP B o t

1 9 7 8 5 0 . 3 TOP B o t

S t a t i o n # 4

1 9 7 5 3 9 . 2 TOP 2 4 . 0 3 1 . 8 1 1 . 9 8 . 5 8 . 3 B o t 2 4 . 1 3 1 . 5 1 3 . 1 8 . 5 8 . 3

1 9 7 6 3 7 . 6 TOP 2 3 . 9 3 1 . 8 8 . 5 7 . 5 B o t 2 3 . 8 3 2 . 1 8 . 3 7 . 4

1 9 7 7 ' 4 8 . 4 TOP 2 2 . 7 3 0 . 2 1 0 . 0 8 . 4 5 . 9 0 . 0 0 1 0 . 1 2 B o t 2 2 . 3 3 1 . 1 11.1 8 . 4 6 . 4 0 . 0 0 3 0 . 1 0

1 9 7 8 5 0 . 3 T o p 2 2 . 2 3 1 . 9 7 . 9 8 . 2 7 . 1 0 . 0 0 4 0 . 0 6 B o t 2 2 . 2 3 1 . 1 11.1 8 . 2 6 . 7 0 . 0 0 5 0 . 0 5

FIGURE C - 2

Graphs o f h v d r o g r a p h i c p a r a m e t e r s for S t a t i o n # 1. - -

1975 1976 J F M A . M J J A S O N D J F M A M J A S O N D

I I I . I : I I 3 I I 1 I I i I

10 b - C

u

m 4 b?\ 5 >. w X E 0 0 0 S u r f a c e Bottom

FIGURE C-2 ( c o n t i n u e d ) Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 1.

L977 1978 J F M . A M J J A S O N D J F M A M J J A S 0 N D

1 I I I I I I I I I I I I I I I I 1

2%5 5i00~ x E 0 S u r f a c e A ~ o t t o r n

0 0

FIGURE C - 3 Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 11.

1 9 7 7 1 9 7 8 J F M A M J J A S O N D J F M A M J J A S O N D

1 I I I I I I I I 1 I 1 I I I I I I 1 I

10-

h tJ .A 03 0- C 0

.A \

Go 225- 30-

$ 20- .A '0 2 3 0 -

Fc z 2 " 0-

8.5-

z 8 . 0 -

7.5-

1 0 - C a ri :> 5- X E

! 0 o-'

FIGURE C-4 Graphs of hydrographic parameters for Station # 2.

1975 1976 A S 0 N ' D I I I

4 r' LO d cn L m

F " 2 5 .r( a H !x

0 3 0

IO-%- g;20 a 0 B

FIGURE (Cont inued) Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 2 .


I I I I I I I I I 1 1 I I I I 1 I 1 I 1 1

Graphs of hydrographic parameters for Station # 3. 1 9 7 5 1 9 7 6

F M A M J J A S O N D J F M A M J J A S O N D I I I I I I I I B I I I I 1 I I t I I I I

FIGURE (Continued) Graphs of hydrographic.parameters for Station # 3.

19 7 7 1978 L , F M A M J J A S O N D J F M A M J J A S O N ? I I I I I I I r I I I I I I I I

r(

r' 10- a m t" al

A

A

0-surface -Bottom

C-52

FIGURE C - 6 Graphs o f h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 4 .


I I I 1 1 I I I 1 I I I I I I I 1 I I I 1 I I

C al d M-. 5 X M X E 0 - S u r f a c e

A-A

F I G U R E (Cont inued) Graphs of h y d r o g r a p h i c p a r a m e t e r s f o r S t a t i o n # 4 .

FIGURE C - 7 Graphs of h y d r s g r a ~ h i c ~ a r a m e t e r s f o r S t a t i o n s # 6 and 1 7

1978 S t a t i o n # 6 z J A S 0 I.1 I! I I I I I I

1978 S t a t i o n # 7 ? f J J A S O N D

I I I I I

FIGURE C-8

Annual a d j u s t e d h y d r o g r a p h i c a v e r a g e s . (Based on 9 months. J u n e ,

J u l y and August a r e e x c l u d e d . )

S t a t i o n # 1. S t a t i o n # 2 . S t a t i o n # 3 . S t a t i o n # 4 .

" 5 ri

&. aJ c 4

C 0 .A C a H rr; 30-

. 25- a - E V :O 20- X

2 0 30- C 0 4 \

< O 2 5 . V)

20-

2, 30- P .A

20- .A E-i A Z s, ' 10- H

x a

8. 0-

C a, & l o - w\ X b3 X E 5-1 0

C-56

75 7 6 77 78 1 I I I '

:J - .. -

CP-e& - - - - - --

-- -

1 A -Bottom

75 76 77 - - -

A - \ -

- / -

&A+(+ -

&=-

75 76 77 7 8 75 76 77 78 I I I I

I+/+ : -

%

/&\ -+ 'Ay---*

bch=e-k3

0 - S u r f a c e

The r e c o r d i n g p e r i o d s t a r t e d w i t h two y e a r s o f v e r y low

r a i n f a l l . R a i n f a l l i n 1977 and 1978 went up c o n s i d e r a b l y b u t

s t i l l d i d n o t r e a c h t h e e x p e c t e d a n n u a l a v e r a g e r a i n f a l l o f

5 4 i n c h e s p e r y e a r . T h i s f a c t s h o u l d b e n o t e d when i n t e r p r e t -

ing t h e a n n u a l a v e r a g e s f o r o t h e r f a c t o r s .

From 1975 - 1 9 7 8 , t h e bay t e m p e r a t u r e d e c l i n e d as c a n be

s e e n i n t h e a n n u a l t e m p e r a t u r e a v e r a g e s a t a l l s t a t i o n s . The

n i n e month t e m p e r a t u r e a v e r a g e d ropped f rom 1 t o 2 d e g r e e s a t

e a c h s t a t i o n o v e r t h e f o u r y e a r p e r i o d . T h i s d rop i s p r i m a r i l y

due t o c o l d e r w i n t e r months and n o t a n a l l y e a r c o o l i n g t r e n d .

S t a t i o n #1 - Upper Hudson Bayou

Tempera tu res i n Hudson Bayou r a n g e d from a low o f 13 .0°c .

( J a n . 1977) t o a h i g h o f 3 3 . ~ ~ ~ . ( S e p t . 1 9 7 6 ) . H i g h e r surrmer

t e m p e r a t u r e s migh t have been n o t e d i f summer d a t a had been

routinely c o l l e c t e d . Hudson Bayou c o n s i s t e n t l y e x h i b i t e d

h i g h e r t e m p e r a t u r e s i n t h e w i n t e r . Upper Hudson Bayou tem-

p e r a t u r e s a v e r a g e d one o r more d e g r e e s h i g h e r t h a n t h e open bay .

T h i s c o u l d have been due t o t h e s h a l l o w n a t u r e o f t h e Bayou and

t h e f a c t t h a t t h e samples were t a k e n i n t h e a f t e r n o o n . The ef-

f e c t s o f warm grorlnd w a t e r i n p u t s h o u l d n ' t be d i s m i s s e d , however ,

as even t h e morning s a m p l i n g times i n 1975 showed h i g h e r tem-

p e r a t u r , e s t h a n t h e open bay . A d d i t i o n a l e v i d e n c e o f t h i s might

be i n d i c a t e d by t h e m i g r a t i o n o f f i s h up t h e Bayou d u r i n g s e v e r e

c o l d f r o n t s .

A s would be e x p e c t e d , Upper Hudson Bayou showed t h e g r e a t e s t

v a r i a t i o n i n s a l i n i t i e s w i t h a low o f 0 O/oo and a h i g h o f

33.0 O/oo. Average a n n u a l n i n e month s a l i n i t i e s f o r t h e Bayou

were u s u a l l y more t h a n 1 0 O/oo l o w e r t h a n t h e o t h e r s t a t i o n s .

C-57

S a l i n i t i e s were g e n e r a l l y low d u r i n g t h e r a i n y summer and

w i n t e r months and h i g h d u r i n g t h e d r i e r f a l l and s p r i n g . The

h i g h e s t a v e r a g e s a l i n i t i e s were d u r i n g t h e s e v e r e s p r i n g d r o u g h t

o f 1975. L i t t l e r e g u l a r s t r a t i f i c a t i o n w a s found a t t h i s sta-

t i o n .

T u r b i d i t i e s i n Upper Hudson Bayou r a n g e d from 3 . 0 t o 65.0

N.T.U. A s t o r m t u r b i d i t y i n May o f 1978 h a d a r e c o r d 300 + N.T.U.

r e a d i n g . T u r b i d i t i e s i n t h e Upper Bayou a v e r a g e d more t h a n 1 5

N.T.U. h i g h e r t h a n t h e o t h e r s t a t i o n s . A d e f i n i t e a n n u a l a v e r a g e

t u r b i d i t y i n c r e a s e w a s n o t e d i n t h e Bayou. Ano the r y e a r o f d a t a

w i l l be c o l l e c t e d i n 1 9 8 1 t o s e e i f t h i s t r e n d c o n t i n u e s .

The pH a t t h i s s t a t i o n i s g e n e r a l l y a b o u t 0.2 u n i t s lower

t h a n t h e r e s t o f t h e bay . The r a n g e w a s from 7 . 3 t o 8 .6 . Lower

pH's were g e n e r a l l y a s s o c i a t e d w i t h lower s a l i n i t i e s . T h i s i s

t o be e x p e c t e d as t h e pH of t h e f r e s h water above t h e dam i s

u s u a l l y i n t h e l o w e r 7 ' s . No a n n u a l t r e n d w a s n o t e d .

Oxygen v a l u e s i n Upper Hudson Bayou were s l i g h t l y lower

t h a n a t t h e o t h e r s t a t i o n s . Values r a n g e d f rom 1 . 5 t o 1 4 . 5

ppm. Oxygen v a l u e s were u s u a l l y l o w e r t h a n s a t u r a t i o n l e v e l s

by a b o u t 1 7 % (See T a b l e C-17 f o r t h e o r e t i c a l s a t u i - a t i o n s ) .

Oxygen w a s most c o r r e l a t e d w i t h t e m p e r a t u r e b u t many anomol ie s

o c c u r r e d . Lows were sometimes found i n September o r Oc tobe r

a s t h e w a t e r s t a r t e d t o c o o l o f f . Very h i g h oxygen v a l u e s were

a s s o c i a t e d w i t h low t i d e s when d e n s e a l g a l mats c o v e r e d t h e

bot tom o r i n t h e summer when p h y t o p l a n k t o n c o u n t s were h i g h .

Twenty-four h r . m o n i t o r i n g i n t h e moat showed r a n g e s o f f rom

0 b e f o r e dawn t o 1 2 . 3 a t 17:OO h r s . i n Sep tember , 1974. L e s s e r

24 h r . v a r i a t i o n s o c c u r i n t h e w i n t e r and t h e v a r i a t i o n w a s f rom

TABLE C-17

Oxygen S o l u b i l i t y vs . Sa l in i - i y and Temperature mg/ 1

0 Temperature C . 30 2 5 2 0 1 5 1 0

1 . 2 t o 1 6 . 4 i n September o f 1978. Th i s sys tem probably becomes

annoxic f r e q u e n t l y i n t h e l a t e summer. The n igh t /day v a r i a t i o n

h a s always been a t l e a s t 4 ppm when it h a s been checked. The

muds on t h e bottom a r e a l l anae rob ic w i t h on ly one s p e c i e s o f

po lychae t e u s u a l l y found.

Though no a t t emp t w a s made t o c o l l e c t samples d u r i n g

heavy r a i n s , n i t r a t e va lues were u s u a l l y below t h e l i m i t s o f

t h e p rocedures used. Phosphates ranged from 0 . 0 0 t o 0.47 o r

t h e phosphate - P mg/l . A more d e t a i l e d r e p o r t o f t h e n u t r i e n t

q u e s t i o n w i l l be made i n t h e nex t p u b l i c a t i o n .

Th i s s t a t i o n w i l l be i n t e r e s t i n g t o watch th rough t h e y e a r s

a s it shows t h e most deg rada t ion . The e x t e n s i v e ha lophyte p l a n t -

i n g cou ld have some e f f e c t s on t h e Bayou wi th t ime . The raw

C-59

d a t a show t h e sudcle i z h c n g e j i n s a l i c i t y a f t e r a r a i n f a l l w i t h

a q u i c k rebound back t o h i g h e r s a l i n i t i e s . I t i s p r o b a b l e t h a t

t h i s p r o c e s s o c c u r r e d s l o w e r i n t h e p a s t . Some a t t e m p t t o re-

t u r n t o more g r a d u a l changes i n s a l i n i t i e s would p r o b a b l y h e l p .

Perhaps w e i r s i n t h e upper d r a i n a g e b a s i n c o u l d h e l p .

According t o t h e S a r a s o t a County A i r and Water P o l l u t i o n

C o n t r o l Depar tment , Co l i fo rms are s t i l l q u i t e h i g h d u r i n g t h e

r a i n y s e a s o n . Some r e t a i n m e n t sys tem might a l s o h e l p t h i s

problem.

S t a t i o n #11 - Lower Hudson Bayou

Though a f u l l y e a r o f sampl ing had n o t been comple ted f o r

S t a t i o n #11 when t h i s p u b l i c a t i o n was comple ted , some c o n c l u s i o n s

a r e a l r e a d y a p p a r e n t . The s t a t i o n p a r a l l e l s t h e - o p e n bay sta-

t i o n s more t h a n it does t h e Upper Bayou. T h i s p r o b a b l y i n d i c a t e s

t h a t t h i s i s a v e r y low f low t r i b u t a r y w i t h m a j o r f r e s h water

f low on l$ o c c u r r i n g d u r i n g s t o r m r u n - o f f p e r i o d s . S u p p o r t i n g

t h i s i s t h e f a c t t h a t s a l i n i t i e s were g e n e r a l l y h i g h w i t h t h e

lowes t b e i n g 2 5 . 0 O/oo. Tempera ture , t u r b i d i t y and pH a l l ap-

proximated open bay s t a t i o n s .

T h i s s t a t i o n e x h i b i t e d more s t r a t i f i c a t i o n t h a n any o f t h e

o t h e r s t a t i o n s . Though n o t a lways , s u r f a c e t o bot tom t e m p e r a t u r e

d i f f e r e n c e s were u s u a l l y a round 1°c. Bottom t u r b i d i t i e s were

u s u a l l y c o n s i d e r a b l y h i g h e r and bot tom oxygen v a l u e s were gener -

a l l y lower t h a n t h e s u r f a c e . Though s u r f a c e D O ' S were g e n e r a l l y

below s a t u r a t i o n v a l u e s , t h e bot tom D O ' S were n e a r l y a lways well

below s a t u r a t i o n v a l u e s . T h i s i s o b v i o u s l y a s t r e s s e d area; t i m e

and o t h e r t e s t s s h o u l d h e l p d e t e r m i n e t h e c a u s e s o f t h e low oxygen

r e a d i n g s i n Lower Hudson Bayou.

S t a t i o n # 2 - Bayf ron t Grass F l a t

S t a t i o n # 2 w i t h i t s s h a l l o w c h a r a c t e r and t h e a s s o c i a t e d

g r a s s e s proved t o be q u i t e i n t e r e s t i n g . Rapid changes were t h e

r u l e i n t h e 24 h r . m o n i t o r i n g work and g r e a t v a r i a t i o n s were

c h a r a c t e r i s t i c o f most p a r a m e t e r s a t t h i s s t a t i o n .

Temperature had t h e g r e a t e s t r a n g e a t t h i s s t a t i o n w i t h

lows o f 1 2 . o0c. and a r e c o r d h i g h f o r t h i s r e s e a r c h o f 35. oOc.

The bot tom t e m p e r a t u r e s were u s u a l l y s l i g h t l y c o o l e r . The 9

month a v e r a g e a n n u a l t e m p e r a t u r e was between 2 2 . 7 and 2 4 . ~ ~ ~ .

A s w a s n o t e d a t t h e o t h e r s t a t i o n s , t h e water h a s f a l l e n 1.5OC.

o v e r t h e l a s t 4 y e a r s .

S a l i n i t y h a s c o n s i s t e n t l y a v e r a g e d 31 t o 3 2 O/oo f o r a

y e a r even though it h a s ranged from a low of 1 8 O/oo t o a h i g h

o f 34.5 O/oo. Sudden and s h o r t l i v e d d r o p s o f s a l i n i t y o c c u r -

r e d r e g u l a r l v a f t e r r a i n s . Mixing seldom t o o k more t h a n 24

h o u r s . The h i g h e s t s a l i n i t i e s were u s u a l l y r e c o r d e d d u r i n g

Oc tober , November, A p r i l and May - c o i n c i d i n g w i t h t h e d r y

p e r i o d s . Summer e v a p o r a t i o n r a t e s are a p p a r e n t l y f a i r l y h i g h

when compared t o r a i n f a l l , as t h i s s t a t i o n f r e q u e n t l y had h i g h

summer s a l i n i t i e s . T h i s would f u r t h e r s u p p o r t t h e concep t t h a t

t h i s i s a ve ry low f r e s h water f low e s t u a r y .

T u r b i d i t y h a s been f a i r l y s t a b l e a t s t a t i o n # 2 w i t h l i t t l e

v a r i a t i o n from a n a v e r a g e o f 10 N . T . U . o v e r t h e p e r i o d o f 1975

t o 1978. The r a n g e was from 1 t o 45 N.T.U. High p e a k s were

most o f t e n a s s o c i a t e d w i t h w e s t e r l y winds o r heavy r a i n f a l l .

During t h i s p e r i o d t h i s s t a t i o n g e n e r a l l y had t h e l o w e s t t u r -

b i d i t i e s . T h i s c o u l d be due t o en t rapment o f s i l t p a r t i c l e s

by t h e g r a s s e s . A s o f y e t , unpubl i shed d a t a f o r t h e w i n t e r and

s p r i n g o f 1979 h a s , however, shown a s u b s t a n t i a l i n c r e a s e i n

t u r b i d i t y a t t h i s s t a t i o n .

The pH a t t h i s s t a t i o n i s g e n e r a l l y around 8.4 w i t h s l i g h t l y

lower pH's d u r i n g r a i n y w i n t e r months. The lowes t pH recorded

was 7 .6 whi le t h e h i g h e s t was 9 . 0 . No y e a r t o y e a r t r e n d has

been no t ed .

With t h e e x c e p t i o n o f 1977 DO v a l u e s were a t o r above sat-

u r a t i o n l e v e l s . 1977 was t h e low y e a r o f t h e d i e o f f f o r t h e

g r a s s e s on t h i s f l a t ( s e e s t a t i o n d e s c r i p t i o n ) . 1978 r ep re sen -

t e d a recovery y e a r and t h i n g s seem t o be back t o normal i n 1 9 7 9 .

The annual oxygen v a l u e s seem t o r e f l e c t t h i s d e c l i n e i n t h e

g r a s s e s . 1975 and 1976 were above s a t u r a t i o n wh i l e 1977 was

below and 1978 was r i g h t a t s a t u r a t i o n v a l u e . Unl ike t h e o t h e r

s t a t i o n s , t h e w i n t e r DO v a l u e s , when t h e g r a s s e s d i e back, a r e

g e n e r a l l y lower t h a n t h e s p r i n g , summer and f a l l v a l u e s . Values

a t t h e t ime we sample a r e g e n e r a l l y above s a t u r a t i o n excep t i n

t h e w i n t e r . Th i s g r a s s f l a t r e g u l a r l y e x h i b i t e d ve ry low pre -

dawn summer D O ' S . I n September o f 1974, and September o f 1978,

t h e r e were s e v e r a l days when t h e pre-dawn v a l u e s were 0 ppm. It

i s i n t e r e s t i n g t o n o t e t h a t t h e r e were major r e d t i d e s d u r i n g -11.

t h e s e y e a r s . Other y e a r s t h e low pre-dawn v a l u e s were u s u a l l y

between 1 and 2 ppm. This s t a t i o n e x h i b i t e d t h e g r e a t e s t 2 4 h r .

cyc l e f o r oxygen v a l u e s . S t a t i o n # 2 a l s o e x h i b i t e d t h e g r e a t e s t

v a r i a t i o n i n a f t e r n o o n va lues w i th a low o f 1 . 5 ppm and a h igh o f

1 5 ppm.

N i t r a t e va lues were g e n e r a l l y very low a t t h i s s t a t i o n . The

average annua l va lue w a s 0 . 0 0 2 mg/ l NO2-N/N03-N f o r bo th 1977 and

1978. Phosphate v a l u e s were a l s o q u i t e low w i t h t h e a n n u a l aver-

a g e s r a n g i n g from between 0.05 t o 0.09 mg/ l PO4-P. It i s i n t e r -

e s t i n g t o n o t e t h a t t h e n i t r a t e v a l u e s i n 1975 were h i g h e r t h a n

phospha te v a l u e s a t o u r s t a t i o n s and a l l b u t one county s t a t i o n

( s e e t a b l e C-1). During t h e p e r i o d of 1977 th rough 1978 phos-

p h a t e s were always i n e x c e s s of n i t r a t e s a t a l l s t a t i o n s . We

have no e x p l a n a t i o n f o r t h i s r e v e r s a l .

S t a t i o n #3 - O'Leary ' s

Tempera ture v a l u e s a t t h i s s t a t i o n c l o s e l y p a r a l l e l t h o s e

a t s t a t i o n ' s 2 and 4 , w i t h t h e n i n e month a v e r a g e b e i n g 2 3 ' ~ . ,

+ o r - 1°C. The same g e n e r a l c o o l i n g t r e n d was n o t e d a t t h i s

s t a t i o n d u r i n g t h e r e p o r t i n g p e r i o d . The l o w e s t t e m p e r a t u r e

r e c o r d e d w a s l oOc . , and t h e h i g h e s t w a s 3 2 . 2 O C . - S a l i n i t y v a l u e s were q u i t e s t a b l e a t s t a t i o n # 3 th rough-

o u t t h e y e a r s w i t h t h e n i n e month a v e r a g e . ranging from 3 1 . 1 ,

t o a h i g h ' o f 3 2 . 2 . The l o w e s t s a l i n i t y r e c o r d e d was 25.0 O/oo

and t h e h i g h e s t w a s 36.0 O/oo. A v e r y s l i g h t s t r a t i f i c a t i o n i s

n o t e d a t t h i s s t a t i o n . T u r b i d i t y d a t a f u r t h e r i n d i c a t e t h a t . some s t r a t i f i c a t i o n e x i s t s .

T u r b i d i t y v a l u e s r anged from 1 t o 50 N.T.U. w i t h t h e n i n e

month a v e r a g e s v a r y i n g from 9 . 1 t o 1 9 . 6 N.T.U. T h i s s t a t i o n

had t h e h i g h e s t t u r b i d i t i e s o f t h e open bay s t a t i o n s . S u r f a c e

t u r b i d i t i e s were h i g h e r t h a n t h e o t h e r open bay s t a t i o n s and

t h e bot tom t u r b i d i t i e s were c o n s i d e r a b l y h i g h e r . From 1975 t o

1 9 7 7 , a s t e a d y i n c r e a s e i n bot tom t u r b i d i t y was o b s e r v e d . I n

1978, t h e t u r b i d i t y dropped from t h e 1 9 . 6 v a l u e i n 1977 , t o 1 0 . 9

i n 1978. J a n u a r y t h r o u g h F e b r u a r y , 1979 v a l u e s are a g a i n up

with t h e average around 1 5 N . T . U . , wh i l e t h e s u r f a c e average

i s aga in around 1 0 N.T.U. Except f o r h i g h t u r b i d i t i e s i n t h e

summer, no r e g u l a r s e a s o n a l t r e n d s f o r t u r b i d i t y have been

no ted . Rain and wind seem t o have t h e g r e a t e s t e f f e c t on t u r -

b i d i t y i n t h i s a r e a w i th t h e excep t ion o f t h e bottom t u r b i d i t i e s

a s a l r e a d y n o t e d .

Nine month average pH va lues were R . 4 , + o r - 0 . 1 . The

lowest pH recorded a t t h i s s t a t i o n was 7 . 2 , wh i l e t h e h igh was

8 . 8 . PH va lues seemed t o be lower d u r i n g r a i n y w i n t e r months

a s was t h e c a s e a t some o f t h e o t h e r s t a t i o n s .

The n i n e month ave rages f o r d i s s o l v e d oxygen a t s t a t i o n 3

were i n t h e 6 ' s . The range was from 2 . 0 t o 1 1 . 0 . The DO va lues

on t h e average were n e a r o r above s a t u r a t i o n l e v e l s i n 1 9 7 5 . - From 1976 t o 1978, d i s s o l v e d oxygen f e l l below s a t u r a t i o n l e v e l s

wi th t h e bottom v a l u e s be ing even f u r t h e r below s a t u r a t i o n .

Though s t a t i o n s 2 and 4 were below s a t u r a f i o n i n 1977, none o f

t h e o t h e r bay s t a t i o n s e x h i b i t e d t h i s s u b - s a t u r a t i o n t r e n d .

Most o f t h i s s u b - s a t u r a t i o n occur red d u r i n g t h e summer and f a l l

months - wi th va lues i n t h e w i n t e r be ing n e a r s a t u r a t i o n . Twenty

f o u r hour moni to r ing showed low l e v e l s b e f o r e down th roughout t h e

summer and even i n A p r i l 1977. I n A p r i l 1977, DO ranged from

0.9 t o 7 . 4 d u r i n g t h e 24 hour p e r i o d . T h i s s t a t i o n seems t o be

q u i t e s t r e s s e d w i th a l o t o f m a t e r i a l coming t o t h e a r e a from

somewhere and then decomposing lower ing oxygen l e v e l s and r a i s i n g

t h e t u r b i d i t y . The w a t e r a t t h e bottom appeared t o be milky i n

c o l o r . B . O . D . ' s a r e now be ing run monthly t o h e l p determine t h e

causes o f t h e s e anomolies . The problem i s p robab ly due t o heavy

urban r u n - o f f i n t h e area b u t t h e m a r i n a and t h r e e n e a r b y l i f t

s t a t i o n s c a n ' t b e d i s m i s s e d y e t .

A s a t o t h e r s t a t i o n s , n i t r a t e v a l u e s were a l s o v e r y low

a t t h i s s t a t i o n . P h o s p h a t e s f l u c t u a t e d more t h a n n i t r a t e s , b u t

t h e y t o o were o f t e n v e r y low. The bo t tom water f r e q u e n t l y had

summer b u i l d - u p s o f p h o s p h a t e s . A t t imes d u r i n g t h e s p r i n g and

summer months o f 1 9 7 8 , b o t h t h e p h o s p h a t e and n i t r a t e v a l u e s

were n e a r z e r o .

M o n i t o r i n g e f f o r t s i n 1979 h a v e a g a i n shown i n c r e a s e s i n

t u r b i d i t y and DO d e p r e s s i o n . A h i g h c h l o r o p h y l l a a n d p l a n k t o n

peak w a s o b s e r v e d a t t h i s s t a t i o n i n J a n u a r y 1979 . The Chloro-

p h y l l a v a l u e was n e a r l y 1 8 mg/m3 w h i l e t h e p l a n k t o n c o u n t ( m o s t l y

copepod n a u p l i i ) s o a r e d t o 6 5 ,000/m3, t h e normal w i n t e r l e v e l s o f

less t h a n 20,000/m3. A t s t a t i o n 2 , 100 y d s . away, none o f t h i s

w a s o b s e r v e d . E x t e n s i v e s t u d y o f a l l k i n d s w i l l c o n t i n u e a t t h i s

s t a t i o n .

S t a t i o n # 4 - Har t ' s Landing

Of t h e 4 o r i g i n a l s t a t i o n s , s t a t i o n # 4 r e p r e s e n t s t h e most

s t a b l e env i ronment w i t h t h e leas t v a r i a t i o n i n most p a r a m e t e r s .

Tempera tu re e x h i b i t e d t h e same t r e n d s as a t s t a t i o n s 2 and 3.

Nine month a v e r a g e s r a n g e d f rom 22.2 t o 24 . lOc. The r a n g e was

f rom 1 3 . 0 t o 33.0°C. The t w e l v e month a v e r a g e f o r t h i s s t a t i n n

and lower S a r a s o t a Bay i n g e n e r a l would p r o b a b l y be a r o u n d 250C.,

+ o r - 1°C. The 1978 t w e l v e month a v e r a g e was 2U.25'~.

Nine month s a l i n i t y a v e r a g e s were u s u a l l y be tween 31 and

32 O/oo, w i t h a r a n g e from 20 t o 36 O/oo. Computat ion o f t h e

t w e l v e month a v e r a g e f o r s a l i n i t y g i v e s a v a l u e o f 31 .8 O/oo,

w h i l e t h e n i n e month a v e r a g e w a s 31.9 O/oo f o r 1978. While a

few lower s a l i n i t i e s were recorded a t s t a t i o n # 4 t h e y seldom

l a s t e d more t h a n a few days . No v a r i a t i o n s due t o t i d e s were

e v e r no ted a t s t a t i o n s 2 ,3 o r 4 f o r s a l i n i t y o r f o r t empera tu re .

T u r b i d i t i e s a t t h i s s t a t i o n ranged from 1 t o 75 N . T . U . w i th

t h e n ine month ave rages be ing between 7.9 and 13 .2 .

The n i n e month pH average dropped from 8 .5 t o 8 . 2 , o v e r t h e

f o u r y e a r p e r i o d . No e x p l a n a t i o n can be found f o r t h i s and it

d i d n ' t occur a t o t h e r s t a t i o n s w i th t h e p o s s i b l e e x c e p t i o n o f

1978.

Dissolved oxygen a t s t a t i o n # 4 was u s u a l l y a t o r above s a t u -

r a t i o n i n t h e a f t e r n o o n . This s t a t i o n a l s o e x h i b i t e d t h e depres -

sed D O ' S i n 1977, t h a t were found a t s t a t i o n # 2 . This seems

s i g n i f i c a n t e s p e c i a l l y s i n c e s t a t i o n #3 which i s -be tween t h e s e

s t a t i o n s d i d n o t show a dep re s s ion i n 1977. S e a s o n a l l y DO va lues

seemed t o p a r a l l e l t empera tu re wi th a few i r r e g u l a r i t i e s . The

range f o p oxygen was 2 . 5 t o 1 2 ppm. The maximum 2 4 hour range

was l e s s t h a n 4 ppm.

N i t r a t e va lues were very low d u r i n g 1977 and 1978. A l l

va lues were below .07 mg/ l , and u s u a l l y were lower t h a n o u r

procedures would measure. I n 1975, a s a t o t h e r s t a t i o n s , t h e

n i t r a t e va lues were q u i t e h i g h , r a n g i n g from 0 . 2 t o 0.9 mg/ l .

Phosphates z7anged from below d e t e c t i o n l e v e l s t o 0 .3 mg/l i n

1977-78. I n t h e w i n t e r o f 1975 t h e y ranged from 0.027 t o 0.07

mg/l. A d e c l i n e i n t h e annua l average f o r phosphate from 1977 - 1978 i s noteworthy. Perhaps t h e ba l ance between t h e two n u t r i e n t s

i s about t o r e v e r s e a g a i n . The n u t r i e n t s i t u a t i o n w i l l be i n -

t e r e s t i n g t o watch d u r i n g t h e y e a r s t o come.

I

S t a t i o n #6 - Marker #8

I A s t h i s s t a t i o n was added i n May 1978 , no a n n u a l a v e r a g e s -

are y e t a v a i l a b l e . S a l i n i t y , however, a p p e a r s t o have less

f l u c t u a t i o n and a h i g h e r a v e r a q e a t s t a t i o n # 6 eve?? a l l o t h e r

s t a t i o n s . Very l i t t l e s t r a t i f i c a t i o n was n o t e d .

T u r b i d i t y was lower t h a n t h e o t h e r s t a t i o n s . During t h e

1979 w i n t e r months, a n i n t e r e s t i n g phenomena w a s n o t e d . During

heavy w e s t e r l y wi.nds t h e f l o o d t i d e c a r r i e d h i g h l y t u r b i d ( 3 0 + 1 _

N.T.U.) w a t e r i n t o t h e bay. T h i s t u r b i d i t y c u r t a i n worked i t s

way a c r o s s t h e bay and would f i n a l l y be d e t e c t e d a t s t a t i o n # k ,

b u t n e v e r r e a c h e d s t a t i o n s 11, 2 o r 3 . T h i s c o u l d be s e e n

I v i s u a l l y . Apparen t ly d u r i n g t h i s s i t u a t i o n , t h e r e i s v e r y lit-

t l e mixing o n t h e east s i d e o f t h e bay.

Oxygen l e v e l s were u s u a l l y q u i t e s t a b l e from month t o month

I and t h e y were u s u a l l y j u s t below s a t u r a t i o n l e v e l s . The bot tom

DO v a l u e s were g e n e r a l l y lower t h a n t h e s u r f a c e v a l u e s .

1 - S t a t i o n # 7 - Marker # 2

S t a t i o n # 7 i s i n f l u e n c e d by waters coming from P h i l l i p p i

I Creek. S a l i n i t y i s f a i r l y s t a b l e b u t f l u c t u a t e s more t h a n s ta-

1 . t i o n # 6 .

Temperature and s a l i n i t y d a t a i n d i c a t e some s t r a t i f i c a t i o n

a t t h i s s t a t i o n i n t h e summer and f a l l . Disso lved oxygen v a l u e s

, - a t t h e bot tom were lower t h a n t h e s u r f a c e v a l u e s d u r i n g t h i s same

t i m e p e r i o d . S u r f a c e oxygen v a l u e s were u s u a l l y a t , o r above,

s a t u r a t i o n l e v e l s w h i l e t h e bot tom v a l u e s w e r e o f t e n below.

Phosphate v a l u e s were sometimes h i g h a t t h i s s t a t i o n , es-

p e c i a l l y a t t h e bot tom. Nitrates were u s u a l l y low b u t d u r i n g

t h e heavy r a i n i n J anua ry 1979, n i t r a t e v a l u e s cl imbed t o a

h igh o f 0.065 m g / l a t t h e s u r f a c e .

Summary

Lower S a r a s o t a Bay appea r s t o be a low f r e s h w a t e r f low

system wi th f a i r l y s t a b l e s a l i n i t y t h a t ave rages around 32 O/oo

+ o r - 1°/oo. Summer t o w i n t e r v a l u e s d o n ' t va ry much, wi th

0 most s t a t i o n s hav ing a range o f 2 6 t o 34 / o o . When s a l i n i t i e s

f a l l below 30 O/oo, it i s n ' t f o r very l ong . V e r t i c a l mixing

seems f a i r l y complete .

Temperatures average around 2S°C. + o r - 1°c., w i th a range

of about 20°c. A g e n e r a l c o o l i n g t r e n d was no t ed from 1975 t o

1978.

With t h e e x c e p t i o n o f t h e bottom a t s t a t i o n #3 , t u r b i d i t i e s

averaged around 1 0 + o r - 3 N.T.U.S. The bottom t u r b i d i t i e s a t

s t a t i o n #3 a r e no tewor thy , and demons t ra te how s e c t i o n s o f t h e

.bay can o p e r a t e a s n e a r l y s e p a r a t e sys tems . Flow p a t t e r n s seem

minimal a long t h e e a s t e r n p a r t o f t h e bay.

PH va lues were 8 .3 + o r - 0 . 2 . Rain seemed t o lower pH

a t most s t a t i o n s . S t a t i o n # 4 h a s had a d e c l i n i n g pH o v e r t h e

l a s t 4 y e a r s .

The g r e a t e s t s t r e s s i s e x h i b i t e d by d i s s o l v e d oxygen d a t a .

S t a t i o n s 1, 11 and 3 e x h i b i t summer d e p r e s s i o n below s a t u r a t i o n

v a l u e s , even i n t h e mid-af ternoon when sampl ing o c c u r r e d . Twenty

f o u r sampling a t t h e s e s t a t i o n s i n d i c a t e d very low pre-dawn l e v e l s .

This problem i s probably a s s o c i a t e d w i t h run-of f d u r i n g t h e sum-

mer months. A l l s t a t i o n s excep t #6 e x h i b i t e d some oxygen va lues

below s a t u r a t i o n .

Phospha tes and n i t r a t e s underwent a remarkab le s w i t c h from

1975 t o 1977 , w i t h t h e sys tem c h a n g i n g from phospha te l i m i t e d

t o n i t r a t e l i m i t e d . H i g h e s t phospha te v a l u e s were found a t

s t a t i o n s 1 and 7 , as would be e x p e c t e d . High n i t r a t e v a l u e s

were r e c o r d e d a t s t a t i o n 7 . Phospha te v a l u e s g e n e r a l l y de-

c l i n e d a t a l l s t a t i o n s from 1977 t o 1978.

S i n c e l a r g e 2 4 h o u r f l u c t u a t i o n s i n d i s s o l v e d oxygen are

a s s o c i a t e d w i t h w a t e r s r i c h i n f a u n a and f l o r a , and s i n c e t h e s e

e x c e s s i v e v a r i a t i o n s i n O 2 l e v e l s c a u s e t h e l o s s o f some less

t o l e r a n t s p e c i e s , it i s f e l t t h a t n u t r i e n t r e d u c t i o n s h o u l d be

a g o a l . T h i s would r e d u c e p h y t o p l a n k t o n and t h e r e b y f a u n a l

e l e m e n t s o f t h e community and h e l p r e s t a b i l i z e t h e oxygen c y c l e s .

T u r b i d i t i e s would a l s o be reduced w i t h less p l a n k t o n , t h e r e b y

a l l o w i n g d e e p e r b e n t h i c p l a n t communit ies which would g e n e r a l l y

work t o g i v e a n i n c r e a s e i n s p e c i e s d e s i r a b l e t o man. S i n c e

phospha tes and n i t r a t e s have s imilar c o n c e n t r a t i o n s and even

undergo r a n k i n g s w i t c h e s , r e d u c t i o n o f b o t h s h o u l d be s o u g h t

i n sewage and r u n - o f f t r e a t m e n t s y s t e m s .

D . ZOOPLANKTON


Knowledge o f t h e dynamics o f t h e p l ank ton sys tem i s e s sen -

t i a l t o an unders tand ing o f t h e bay system. Much o f t h e pro-

d u c t i v i t y o f t h e system i s due t o phytop lankton t h a t form t h e

bottom o f many bay food c h a i n s .

I n a d d i t i o n t o t h e i r v i t a l r o l e i n e s t u a r i n e carbon c y c l e s

t h e p lank ton community can a l s o have s i g n i f i c a n t e f f e c t s on -

t u r b i d i t y l e v @ l s , O2 l e v e l s and sed imen ta t i on . S ince t h e b e n t h i c

community depends on adequate l i g h t p e n e t r a t i o n f o r i t s produc- - t i v i t y , i n c r e a s i n g t u r b i d i t i e s can reduce t h e dep th o f s u r v i v a l

f o r b e n t h i c p l a n t s . S ince Spor t f i s h i n g i n S a r a s o t a Bay i s de-

pendent gn t h e g r a s s f l a t s knowledge o f t u r b i d i t y changes and

t h e i r c auses a r e impor t an t .

Excess ive p lank ton l o a d s can cause low oxygen l e v e l s a t

n i g h t e s p e c i a l l y when l i t t l e wind i s mixing t h e wa te r column.

Some ev idence of t h i s problem is m a n i f e s t a t a few s t a t i o n s s o

a n a l y s i s o f t h e p lank ton community became a p a r t o f t h i s s t udy .

Chlorophyl l a n a l y s i s w a s s t a r t e d i n December 1978 i n o r d e r

t o observe s e a s o n a l and annua l changes i n t h e phytoplankton

community. Th is work w i l l be r e p o r t e d i n 1981.

Zooplankton counts were t a k e n from 1976 t o p r e s e n t . Begin-

n i n g i n September 1978 t h e samples were t aken eve ry month. S ince

on ly 4 o r 5 months o f r e g u l a r d a t a a r e a v a i l a b l e , no s t a t i s t i c a l

a n a l y s i s w i l l be made i n t h i s r e p o r t .

New Col lege has done some q u a n t i t a t i v e zooplankton counts

bu t t h e s e r e c o r d s were u n a v a i l a b l e . The on ly o t h e r d a t a a v a i l -

a b l e were found i n t h e s e c t i o n 208 s tudy done on P h i l l i p p e Creek

by t h e Southwest F l o r i d a Regional P lanning Counci l ( 2 9 . Sam-

p l e s were t a k e n on June 23, 1 9 7 7 . R o b e r t ' s Bay had 24,995 i n d i -

v iduals /m3 wh i l e t h e bays sou th o f P h i l l i p p e Creek ranged from

18,963 t o 51,593 ind iv idua l s /m3 . Th i s s t u d y r e p o r t e d t h a t t h e

t o t a l community metabolism (TCM) f o r t h e r e p o r t e d a r e a was

moderate t o h i g h f o r t h e west c o a s t o f F l o r i d a .

Methods

U n t i l A p r i l 1978, p lankton-samples were t aken i n t h e f i e l d

by p a i r s o f s t u d e n t s wi thout s u p e r v i s i o n . S ince t h a t t ime t h e

samples have been c o l l e c t e d r e g u l a r l y from t h e decks o f t h e

Caref ree Learner w i th s u p e r v i s i o n . -- The "Learner" h a s a 5 meter i n t e r v a l - m a r k e d on h e r r a i l

and a ward 's # 1 2 (125 meshes t o t h e i n c h ) , 25cm. d iameter p lank-

t o n n e t i s towed very s lowly through t h a t d i s t a n c e about i f o o t

below t h e s u r f a c e . The n e t i s t h e n lowered 3 t imes i n t o t h e .

water wi thout submerging t h e r i n g t o backwash t h e p lankton .

Each t ime t h e lower p a r t o f t h e n e t i s tucked i n t o t h e v i a l t o

remove c l i n g i n g p l ank ton . The 32ml. sample i s added t o 3ml. o f

forma1dehyd.e and t h e n e t m a t e r i a l around t h e v i a l i s s w i r l e d i n

t h e mix ture t o f u r t h e r i n s u r e removal o f p l a n k t e r s . The n e t i s

back f l u s h e d w i t h f r e s h wa te r s o t h a t it i s r eady f o r t h e nex t

sample.

Two s t u d e n t s each t a k e l m l . sample o f t h e p lankton and

p l a c e it i n a Sedgewick-Rafter coun t ing c e l l . Samples a r e a g i -

t a t e d b e f o r e drawing t h e sample. The s l i d e s a r e counted a t 40x

on mechanical s t a g e microscopes . The two s t u d e n t coun t s are

averaged and t h e n m u l t i p l i e d by a c o r r e c t i o n f a c t o r t o r e p r e s e n t

t h e number/cubic mete r . The m u l t i p l i c a t i o n f a c t o r a l l o w s f o r

n e t a r e a , d i s t a n c e towed, d i l u t i o n w i t h formaldehyde and t h e

p o r t i o n o f t h e t o t a l sample r e p r e s e n t e d by l m l . The whole s a m -

p l e i s counted f o r l a r g e r p l a n k t e r s w i t h a 20x s t e r o s c o p e .

Due t o t r a i n i n g d i f f i c u l t i e s n o t a l l p l a n k t e r s a r e counted.

Each s t u d e n t has a book w i t h photographs t aken th rough t h e i r

scope o f a v a r i e t y o f each o f t h e p l a n k t e r s t h e y a r e t o count .

The fo l l owing i s a t o t a l l i s t o f t h e organisms searched f o r :

n a u p l i i ( a l l n a u p l i i lumped t o g e t h e r ) , copepods, po lychae t e

l a r v a e , b i v a l v e l a r v a e , gas t ropod l a r v a e , a p p e n d i c u l a r i a n s , - medusae, nematodes, c l a d o c e r a , c h a e t o ~ n a t h s , t i n t i n i d s , echino-

derm l a r v a e , zoea , f i s h eggs , f i s h l a r v a e , and d i n o f l a g e l l a t e s

o f t h e genus Noc t i l uca . Records a r e a l s o k e p t on o t h e r groups ---- i f t hey r e p r e s e n t a s i g n i f i c a n t p o r t i o n .

Due t o l o s s e s th rough n e t c l o g g i n g and overf low t h e s e coun t s

a r e , i f a n y t h i n g , low. Each sample i s checked by M r . S t u a r t and

z o n s t a n t r e c o r d s i n d i c a t e t h a t very s m a l l p l a n k t e r s a r e occas ion-

a l l y missed and s o t h i s would a l s o cause a low count . The method

does , however, p rov ide un i fo rmi ty w i t h t ime because a l l o f t h e

v a r i a b l e s remain f a i r l y c o n s t a n t .

S t a t i o n D e s c r i p t i o n s

See s t a t i o n d e s c r i p t i o n s on page C - 8 .

I Data

The coun t s f o r s t a t i o n s 1, 11, 2 , 3 , 4, 6 and 7 a r e g iven

in Tables D-1 through D-7.

m

.T49LE D - 1

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n i n n u a b e r s / m 3 f o r S t a t i o n # 1

11/ 2 /76 1 1 / 1 5 / 7 6 2 / 2 / 7 3 1 0 / 1 1 / 7 7 1 0 / 1 2 / 7 7 11/ 3 / 7 7 11/ 9 / 7 7 1 2 / 5 / 7 7 T i n t i n n i d s 720 7000 3590 1500

Tlvdromedusae

Copenods 200 3730 450 4920 5830 3060 4330 9300

C l a d o c e r a 1 5 0 7 0

L4'ZVALS P e l v c e n o d s

E c h i n o d e r n s

Decanods

F i s h e c q s / l a r v a e

Nematodes 1 3 8 0

T o t a l z o o 3 l a n k t o n 30110 1 2 3 7 0 123110 9640 15300 1 6 1 1 5 1 3 9 6 0 39440

TABLE D-1 (Con t inued)

S e a s o n a l d i s t r i b u t i o n o f zoop lank ton i n numbers/m3 f o r S t a t i o n # 1.

. 1 / 1 0 / 7 8 1 / 3 1 / 7 8 2 /23 /78 T i n t i n n i d s 300 1650

Hydromedusae

Copepods 3450 450

C l a d o c e r a 1 5 0

C h a e t o q n a t h s

LARVALS Pe lycepods

Gas t ropods

P o l y c h a e t e s 150

Echinoderms

N a u p l i i 4800 12800 15 0

Decapods 150 80

Fish e g g s / l a r v a e

Nematodes 4 5 0 375 740

T o t a l zoop lank ton 9300 15425 1480

. .

TABLE D - 2

S e a s o n a l d i s t r i b u t i o n of z o o p l a n k t o n i n numbers/m3 for S t a t i o n # 11.

9 / 1 9 / 7 8 ' l o / 3 / 7 8 1 1 / 1 4 / 7 8 1 2 / 1 1 / 7 8 T i n t i n n i d s 600 225 300

Hydromedusae 3750

Copepods 1 7 5 5 0 6925 3300

C l a d o c e r a 1 5 0 3375 1 5 0

C h a e t o g n a t h s

A p p e n d i c u l a r i a n s 7350 1 1 2 0

LARVALS P e l y c e p o d s 1 0 9 5 0 2950 1200

G a s t r o p o d s 2900 300

P o l y c h a e t e s 300 2400 300

Ech inode rms 370

Naupl ii 20700 1 5 3 0 0 3600

Decapods 1 5 0

F i s h e g g s / 300 850 l a r v a e

T o t a l z o o p l a n k t o n 57300 40590 9075 11775

TABLE D-3

S e a s o n a l d i s t r i b u t i o n of z o o p l a n k t o n i n numbeis/m3 for S t a t i o n # 2

1 1 / 1 6 / 7 6 1 1 / 2 3 / 7 6 9 /19 /78 1 0 / 3 /78 1 2 / 1 1 / 7 8 1 / 3 0 / 7 8 T i n t i n n i d s 600 1800

Hydromedusae 1275 525 1 5 0 ,

Copepods 2240 1190 19950 8150 15300 1800

C l a d o c e r a 2025 1425


A p p e n d i c u l a r i a n s 300 3975 2925 900

LARVALS P e l y c e p o d s 290 300 5725 6600 1 5 0 300

G a s t r o p o d s 2 90 600 1125 4950 7 5

P o l y c h a e t e s 450 825 975 2700 300

Echinoderms 300

N a u p l i i 5210 1790 89550 18300 16215 5250

Decapods

F i s h e g g s / l a r v a e

9600 T o t a l z o o p l a n k t o n 8030 4630 124750 43850 35940

TABLE D-4

S e a s o n a l d i s t r i b u t i o n of z o o p l a n k t o n i n numbers /m3 for S t a t i o n # 3.

11/ 2/76 1 1 / 1 5 / 7 6 2/ 7 /77 5 / 1 9 / 7 7 9 / 1 2 / 7 7 1 0 / 1 1 / 7 7 1 1 / 1 3 / 7 7 1 2 / 5 /77 , T i n t i n n i d s 2460 1560 2140 1740 600 1 8 7 5 1 2 0 0

Hydromedusae 1 5 0 670

Copepods 5640 1 1 9 5 0 520 5220 1 2 5 3 0 5530 2550 2770

C l a d o c e r a 20 7 5


A p p e n d i c u l a r i a n s

LARVALS P e l y c e p o d s

G a s t r o p o d s

P o l y c h a e t e s

Ech inode rms

N a u p l i i 117300 1 9 5 2 0 2 7 5 0 . 15940 1 5 3 0 0 8220 3825 1 6 5 0

Decapods


T o t a l z o o p l a n k t o n 125690 32350 5660 23900 32770 21730 9075 6820

TABLE D-4 ( C o n t i n u e d )

h e a s o n a l d i s t r i b u t i o n o f zoop lank ton i n numbers/m3 f o r S t a t i o n # 3.

4 /19 /78 1 0 / 1 7 / 7 8 11 /14 /78 1 2 / 1 1 / 7 8 T i n t i n n i d s 1950 3075

Hydromedusae 600 1200

Copepods 32175 10125 7200 7950

C l a d o c e r a 750 1650 1050


A p p e n d i c u l a r i a n s 5100 2775

LARVALS Pe lycepods 3600 14625

G a s t r o p o d s 1 4 2 5 3375

P o l y c h a e t e s 525 1380

Echinoderms

N a u p l i i 67725 4915

Decapods 900



TABLE D-5

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n i n numbers /m3 f o r S t a t i o n # 4 .

11/ 6 / 7 6 1 1 / 1 6 / 7 6 2 / 7 /77 1 0 / 1 1 / 7 7 11/ 9 / 7 7 1 / 1 0 / 7 8 2 / 2 3 / 7 8 T i n t i n n i d s 1040 740 3140 525

Hydromedusae 7 0

Copepods 23840 10950 820 7170 4030 7125 2475

C l a d o c e r a 150


A p p e n d i c u l a r i a n s

LARVALS P e l y c e p o d s 9690 1940

G a s t r o p o d s 220 1 5 0 7 5

P o l y c h a e t e s 2240 3950 300 370 70 9 7 0

Ech inode rms

N a u p l i i 32780 16240 2680 5830 2390 54 7 5 2320

Decapods


T o t a l z o o p l a n k t o n 69740 -- -- --- - 34410 4610 20150 9630 13200 6135

TABLE D-5 ( C o n t i n u e d )

S e a s o n a l d i s t r i b u t i o n o f z o o p l a n k t o n i n numbers/m3 f o r S t a t i o n # 4.

9 / 1 9 / 7 8 1 0 / 1 7 / 7 8 1 1 / 1 4 / 7 8 1 2 / 1 1 / 7 8 T i n t i n n i d s ' 450 2950 1 5 0

Hydromedusae 525 2 2 5

Copepods . 12875 1 1 7 5 0 10800 6900

Cladocera 5 7 5 1 5 0

C h a e t o g n a t h s 1 5 0 7 5

A p p e n d i c u l a r i a n s 2400 300 1 0 5 0

LARVALS P e l y c e p o d s 1350 1 2 7 5 1 5 0 1 0 6 5

G a s t r o p o d s 675 225 7 5 0

P o l y c h a e t e s 975 750 450 1215

Ech inode rms

Naupl ii 23700 1 2 3 0 0 12975 17400

Decapods


T o t a l z o o p l a n k t o n 4 3075 27050 27925 28530 -

TABLE D-6

S e a s o n a l d i s t r i b u t i o n of z g o p l a n k t o n i n numbers /m3 f o r S t a t i o n # 6.

9 / 1 2 / 7 8 1 0 / 1 7 / 7 8 1 1 / 1 4 / ~ 1 2 / 1 1 [ 1 8 . - - -- . - - T i n t i n n i d s 3 7 5 765 300 2250

Hydromedusae 2 2 5 300 1 5 0

Copepods 1 0 5 2 5 11850 16050 1 2 8 2 5

C l a d o c e r a 6 7 5


A p p e n d i c u l a r i a n s 1 8 0 0

LARVALS P e l y c e p o d s 2175

G a s t r o p o d s 1 5 0

P o l y c h a e t e s 525

Ech inode rms

N a u p l i i 11850

Cecapods



S e a s o n a l d i s t r i b u t i o n of z o o p l a n k t o n i n numbers/m3 f o r S t a t i o n # 7.

1 0 / 3 / 7 8 1 2 / 1 4 / 7 8 1/30/79- - - - -- - - . . -

T i n t i n n i d s 225 1 6 5 2100

Hydromedusae 3 7 5

Copepods 13105 13080 i 2 0 0

C l a d o c e r a 750


A p p e n d i c u l a r i a n s 1 4 2 5 465

LARVALS P e l y c e p o d s 5250 900 300

G a s t r o p o d s 4650 1 5 0 300

P o l y c h a e t e s 465 1 5 0

E c h i n o d e r m s 600

N a u p l i i 8625 1 4 2 6 5 3450

Decapods


T o t a l z o o p l a n k t o n 35005 29490 7500

Discuss ion

S ince a f u l l y e a r o f d a t a h a s n o t y e t been c o l l e c t e d on ly

l i m i t e d conc lus ions may be drawn.

S a r a s o t a Bay e x h i b i t s a marked s e a s o n a l v a r i a t i o n i n zoo-

p lank ton wi th peaks i n t h e w a r m summer months and extreme lows

i n January and February. There i s a f a i r amount o f v a r i a t i o n ,

i n t h e warm months from s t a t i o n t o s t a t i o n . S t a t i o n s #2 and # 3

had t h e h i g h e s t peaks i n September wh i l e s t a t i o n #6 had t h e

l owes t . S t a t i o n # 6 , o f c o u r s e , h a s t h e h i g h e s t s a l i n i t y and i s

most i n f luenced by Gulf w a t e r s . S t a t i o n # 6 a l s o had t h e most

constanZ p o p u l a t i o n s through t h e f a l l months.

Data r e p o r t e d h e r e p l u s d a t a c o l l e c t e d through May 1 9 7 9

would i n d i c a t e t h a t t h e average annua l count f o r t h e bay sys tem

3 i s going t o be i n exces s o f 60,000 i n d i v i d u a l s / m . Thi s i s

f a i r l y h igh f o r a low f low West Coast e s t u a r y e s p e c i a l l y s i n c e

t h e coun t s r e p o r t e d h e r e a r e p robably low. According t o t h e

t a b l e l i s t e d i n by Weiss, 1978, t h a t would be a f a i r l y h igh

count f o r any a r e a on t h e A t l a n t i c and Gulf Coasts ( 34 1.

Counts i n exces s o f t h i s have on ly been r e p o r t e d f o r Cox Bay,

Anclote E s t u a r y , Long I s l a n d Sound and Tampa Bay.

A s r e p o r t e d f o r o t h e r e s t u a r i n e a r e a s t h e ho lop lankton

dominate t h e sys tem wi th copepods and n a u p l i i a ccoun t ing f o r

t h e most s i g n i f i c a n t p a r t o f t h e c o u n t s . Appendicular ians a l s o

comprise a s i g n i f i c a n t p o r t i o n d u r i n g some months.

Meroplankton accoun t s f o r a s i g n i f i c a n t p o r t i o n d u r i n g t h e

summer months. Th i s i s normal w i t h a n a c t i v e b e n t h i c community

a s i n S a r a s o t a Bay.

No f u r t h e r a t t e m p t s a t a n a l y s i s o f t h i s d a t a w i l l b e made

i n t h i s r e p o r t . The monthly samples w i l l c o n t i n u e and a com-

p l e t e s t a t i s t i c a l a n a l y s i s w i l l be made i n 1 9 8 1 when t h e zoo-

p lankton and phytoplankton can be looked a t t o g e t h e r .

E . GRASS FLAT MEASURED TOWS


Grass f l a t s p l a y a v i t a l r o l e i n S a r a s o t a Bay's produc-

t i v i t y , e s p e c i a l l y i n t e r m s o f man's u se o f t h e bay. Many

r e s e a r c h e r s have documented t h e r o l e g r a s s f l a t s p l a y as

n u r s e r y a r e a s . Many s p o r t f i s h spend p a r t o f t h e i r l i f e

c y c l e on t h e g r a s s f l a t o r p rey on organisms t h a t have used

t h e g r a s s f l a t s . The h e a l t h o f t h e g r a s s f l a t sys tem i s , t h e r e -

f o r e , impor tan t t o man's i n t e r e s t i n t h e bay.

Long t e rm q u a n t i t a t i v e a n a l y s i s o f t h e organisms on t h e

g r a s s f l a t s can g ive an i n d i c a t i o n o f t h e p r o d u c t i v i t y and

s t a b i l i t y o f t h e f l a t s . For t h i s r e a s o n , a measured tow was

. i n i t i a t e d t h a t would demonstra te s e a s o n a l v a r i a t i o n s t o t h e

s t u d e n t s and y e t p rov ide u s e f u l l ong t e rm informat ion on t h e

f i s h e s and i n v e r t e b r a t e s t h a t cou ld be caught w i th a n e t .

Methods

C o l l e c t i o n i s done w i t h a n e t towed from t h e boa t a t 1 .25

t o 1 . 5 kno t s f o r 5 minutes . The n e t i s a r o l l e r t r a w l w i th a

1 meter wide and 2 5 cm h igh opening o v e r a 1 0 cm r o l l e r . A

twe lve f o o t 3 / 4 " s t r e t c h mesh nylon n e t i s a t t a c h e d t o t h e

frame wi th a qu ick r e l e a s e opening a t t h e end o f t h e bag. The

tow covers an a r e a df approx imate ly 2 0 0 square me te r s .

Each organism i s counted and measured i n 2 cm. i n t e r v a l s .

The count i s done on t h e b o a t and new o r unusual specimens a r e

r e t u r n e d t o t h e l a b f o r i d e n t i f i c a t i o n ( s e e b i b l i o g r a p h y f o r

t h e keys used i n i d e n t i f i c a t i o n ) . Wind speed , d i r e c t i o n , cloud

cove r , wa te r t empera tu re , 0 2 , s a l i n i t y , pH, t i d e c o n d i t i o n and

a d e s c r i p t i o n o f t h e v e g e t a t i o n i n t h e n e t a r e r eco rded f o r

each tow.

S t a t i o n D e s c r i p t i o n

Seven s t a t i o n s a r e sampled each month. The s t a t i o n s a r e

p i c t u r e d on t h e map i n F igure E-1 . South Lido g r a s s f l a t and

Bird Key Yacht Club g r a s s f l a t a r e a lmos t t o t a l l y t u r t l e g r a s s

whi le t h e o t h e r s t a t i o n s a r e mixed t u r t l e and s h o a l g r a s s . The

o u t e r C i t y I s l a n d g r a s s f l a t has some manatee g r a s s . Depths i n

t h e a r e a s towed a r e u s u a l l y around 18" below mean s p r i n g low

t i d e w i th t h e e x c e p t i o n o f t h e o u t e r C i t y I s l a n d - g r a s s f l a t

which v a r i e s from 18" t o 3 ' .

Big P a s s , South Lido, o u t e r C i t y I s l a n d and i n n e r C i ty

I s l a n d gflass f l a t s average 1 - 2 O/oo h i g h e r s a l i n i t i e s t han

t h e Bayfront g r a s s f l a t .

Data

Tables E-1 th rough E-7 g i v e t h e r e s u l t s o f t h e c a t c h e s from

Apr i l 1978 t o February 1979. Table E-8 g i v e s t h e t e c h n i c a l names

f o r t h e s p e c i e s c o l l e c t e d .

F I G U R E E - l S t a t i o n Loca t i ons f o r Measured Tows

BF - Bayfront Grass f l a t W - Wreck Grass f l a t BK - Bird Key Yacht Club Grass f l a t BP - Big Pas s Grass f l a t SL - South Lido Grass f l a t O C I - Outer C i t y I s l a n d Grass f l a t I C I - I n n e r C i t y I s l a n d Grass f l a t

TABLE E-1

Mon th ly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n t h e B a y f r o n t g r a s s f l a t .

5 / 7 8 6 / 7 8 8 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2 /79 MOLLUSKS Dove S h e l l 0-2 5

O y s t e r D r i l l 0-2

T u l i p S h e l l 2 -4 1

ARTHROPODS Grass Sh r imp 0-2 1 5 1 2 1 0 1 8 1 2 7 1

2-4 1 8 1 1 3 8 11 2 4 -6 2 3

Bayone t Sh r imp 0-2 1 1 4 3 2-4 5 51 3 3 11 9 1 4-6 1 3 3 5 3 3 1 6-8 2

P i n k S h r i m p 2-4 1 1 4-6 1 2 2 6-8 1 2 ' 1

S p i d e r C r a b 0-2

a l u e Crab 6-8 8-10

14-16

Mud C r a b 0-2

H e r m i t C r a b 0-2 2-4

ECHINODERMS S e a U r c h i n 4-6

CHORDATES S e a S q u i r t 2-4

. 4-6 6-8

10-12

C o l o n i a l 0-2 T u n i c a t e 2-4

A s c i d i a n 2-4 4 4-6 2 8-10 1 10 -12 2 12-14 1 16-18 1 20-22 1 24-26 1

TABLE E-1 ( C o n t i n u e d )

M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n t h e a a y f r o n t g r a s s f l a t .

FISH P i p e F i s h 4-6 2

20-22 3

S e a Horse 2-4 2

S i l v e r s i d e s 2-4 4-6

G r o u p e r 1 2 - 1 4 1

G r u n t 1 2 - 1 4 1

P i n F i s h 0-2 3 1 2-4 6 3

Mo j arra 0-2 2-4 6 4-6 4

C r o a k e r 2 -4 2 1 4-6 1 7 1 6-8 3 3

F i l e F i s h 0-2 3 2-4 2 1 1 4-6 2 6-8 4 8-10 3 1 1

10-12 2

Cow F i s h 0-2

P u f f e r s 4-6

S p i n y Box F i s h 6-8 8-10

10-12

TABLE E-2

Mottthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on t h e 'Wreck g r a s s f l a t .

5/78 6/78 7/78 9/78 10178 11/78 121_7Ki7-79 2/7_q -. . . . . -- -_ .l_-l_ __ MOLLUSKS Horse Conch 2-4 2

O y s t e r D r i l l 0-2 2 2-4 1

ARTHROPODS Grass Shrimp 0-2 21 3 8 1 2 77 13 27

2-4 2 24 3 6 1 3 11 2 4-6 5 1 2 2 1 6-8 1

Bayonet Shrimp 0-2 11 1 1 1 1 1 2-4 3 24 15 3 8 1 3 11 7 4-6 2 14 7 2 5 6 7 11 3 6-8 1

P i n k Shrimp 0-2 1 1 2-4 1 1 1 7 1 3 4-6 2 15 3 1 5 2 4 6-8 1 1 2 3

10-12 1

S p i d e r Crab. 4-6 1

Blue Crab 0-2 8-10 1

10-12 1

Mud Crab 2-4 1 4-6 1

H e r m i t Crab 0-2 5 2-4 3 4-6 1

ECHINODERMS Sea Urch in 6-8 1

8-10

CHORDATES Sea S q u i r t 0-2

2-4 4-6 6-8 8-10

. ~ . . .. ~~. ..... .. 10-12 . .-


M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a for c a t c h e s o n t h e Wreck g r a s s f l a t .


6- 8 1 8 - 2 0

A s c i d i a n 0- 2 2-4 4-6 6-8 8-10

12-14 14-16 1 6 - 1 8 18-20 20-22 24-26 26-28

FISH P i p e F i s h 6- 8 1 1

8-10 4 10-12 1 3 12-14 1 16-18 1

S e a Horse 2-4 2 1 4-6 8-10 1 1

G r o u p e r 2-4 2 6-8 1

S n a p p e r 2-4 4

G r u n t 6-8 1 8-10 1

10-12 1

P i n F i s h 0-2 7 215 2-4 3 8 1 5 7 1 4-6 5 1 5 4 8


M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n t h e Wreck g r a s s f l a t .

Mo j arra 0-2 3 1 1 2 -4 5 1 3 1 2 2 4-6 3 2 1 6-8 2

C r o a k e r 0-2 1 2-4 3 4-6 1 6-8 9 1

T r o u t 4-6 1

Wrasse 4-6

F i l e F i s h 0-2 2-4 3 1 1 4-6 5 1 6-8 1 8-10 1

10-12 1

P u f f e r s 2-4 1

S p i n y Box F i s h 2-4 1 1 4-6 6-8 1 1 8-10

1 0 - 1 2 1 4 - 1 6 1

Toad F i s h 0-2 1

G r a s s y S c o r p i o n F i s h 8-10 1

F l o u n d e r .. . . 2-'I 1 . . .. _ . . .- ...

TABLE E - 3

M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r catches o n B i r d Key Y a c h t C l u b grass f l a t .

5 / 7 8 6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 MOLLUSKS D o v e S h e l l 0 -2 5 2 3

2-4 1 O y s t e r D r i l l 0 -2 6

ARTHROPODS Grass S h r i m p 0-2 1

2 -4 1

B a y o n e t S h r i m p 0-2 1 1 1 2 1 2 2-4 8 8 9 4 6 2 7 4 -6 1 5 4 7 2 9 3 6-8 2

P i n k S h r i m p 0-2 3 2-4 1 6 1 2 4-6 1 4 1 1 2 2 9 6 -8 1 2 2 1 3 8 - 1 0 2 11 1 0 1

S p i d e r C r a b 0-2 1

B l u e C r a b 0-2 2-4 4 - 6 1 6-8 2

1 0 - 1 2

Mud C r a b 0-2 2

H e r m i t ~ C r a b 0-2

ECHINODERMS S e a U r c h i n 0 -2

2-4 6 - 8

CHORDATES S e a S q u i r t 4 - 6

6 - 8 8 - 1 0

1 0 - 1 2 1 2 - 1 4

C o l o n i a l 0 -2 T u n i c a t e 2-4

4 - 6 , . 1 0 - 1 2

1 2 - 1 4

TABLE E-3 (Cont inued)

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on Bi rd Key y a c h t Club g r a s s f l a t .

-- -- 5 / 7 8 7 / 7 8 7 / 7 8 7 8 - --- - -- 1 1 / 7 8 1 2 / 7 8 1 / 7 9 CHORDATES Cont . A s c i d i a n s 0 - 2 2

2 - 4 2 4 - 6 2 6 - 8 2 8 - 1 0 1

FISH P ipe f i s h 2 - 4 3

4 - 6 1 1

Sea Horse 61-2 1 2 - 4 1 5 2

Grouper 8 - 1 0 1 1 2 - 1 4 2

Snapper 2 -4

Grunt

P i n F i s h 0 - 2 2 1 1 2 - 4 1 2 5 8 2 3 4 - 6 3 7 1 5 4 6 3

Mojarra

Croaker 2 - 4 1 3 4 - 6 2 6 - 8 1 - -

Trou t - 4 - 6 1 . .


M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n B i r d Key Ya'cht C l u b g r a s s f l a t .

5 / 7 8 6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 FISH C o n t . F i l e F i s h 0-2 1 1 1

2-4 8 1

Cow F i s h 6-8 1 8-10 1 1

P u f f e r s 4-6 8-10 1

10-12 1

S p i n y Box F i s h 2-4 1 6-8 1 8-10 1

Toad F i s h 6-8 8-10

G r a s s y S c o r p i o n F i s h 8-10 1

B l e n n y 2-4 1

F l o r i d a L i n g 2-4 1 6-8 1 8-10 1

M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r catches o n B i g P a s s grass f l a t .

5 / 7 8 6 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2/79.

MOLLUSKS Dove S h e l l 0-2 2 3 2

2-4 2

Horn S h e l l 0-2 2-4

T u l i p S h e l l 2 -4

N u d i b r a n c h 0-2 1

ARTHROPODS Grass S h r i m p 0-2 6 7 4 5 2 6 8 1 7 2 1 2

1 7 7 2 6 2 -4 4 2 1 1 2 4-6

B a y o n e t S h r i m p 0-2 3 1 1 2 1 2 2 2 1 8 3 0 30 2 1 5 3 4 3 2-4 2 3

2 5 1 6 9 - 7 5 4 5 4-6 6-8 1

P i n k S h r i m p 2-4 4-6

S p i d e r C r a b 0-2 2 -4

B l u e C r a b 0-2 2-4

H e r m i t C r a b 0-2 4

ECHINODERMS S t a r F i s h 0-2

2-4 4-6

S e a U r c h i n 0-2 2 -4

CHC Sea


'Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n B i g P a s s g r a s s f l a t .

5 / 7 8 6 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2 / 7 9 . CHORDATES(cont . ) C o l o n i a l 2-4 2 .

T u n i c a t e A s c i d i a n s 0-2 1

2-4 2 4-6 2 8-10 1-

FISH Anchovy 4-6

B a r r a c u d a 4-6

S e a Horse 2-4 1 4-6

16-18 1

S i l v e r s i d e s 4-6

G r u n t 2 -4 1 6-8 1

14-16 1 20-22 1

P i n F i s h

S h e e p s h e a d 2-4 3

C r o a k e r 2-4 5 4-6 1 6 6-8 1

- F i l e F i s h 0-2 2 2-4 8 4-6

TABLE E-4 (Cont inued)

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on Big P a s s g r a s s f l a t .

Spiny Box F i s h 2-4 4-6 6-8 6-10

Toad F i s h 10-12 1

Blenny 0-2 1

F l o r i d a Ling 6-8 1

TABLE E - 5

Month ly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n S o u t h L i d o crass f l a t .

6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2 / 7 9 MOLLUSKS Dove S h e l l 0-2 3 2 1

Horn S h e l l 0-2 3 1

S e a Hare 10 -12 2

N u d i b r a n c h 2-4 8

ARTHROPODS Grass Sh r imp 0-2

2-4 4-6

Bayone t Sh r imp 0-2 2-4 2 9 4-6

P i n k S h r i m p 2-4 1 2 - 3 2 4-6 1 2 1 9 6-8 5 5 5

B l u e C r a b

S p i d e r C r a b 0-2 1 2-1, 2 4-6 3 6-8 2 8-10 1

Mud c r a b 0-2

H e r m i t C r a b 0-2

ECHINODERMS S t a r f i s h 0-2 3 2

2-4 1

S e a U r c h i n 0-2 3 1 2-4 4-6 6-8


f l o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a for c a t c h e s o n S o u t h L i d o g r a s s f l a t .

-- A 6 / 7 8 7 / 7 8 9 / 7 8 ' 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2/79: ECHINODEIII?S C o n t . Worm S e a 10-12 1

Cucumber 12-14 1

CHORDATES S e a S q u i r t s 2-4


4-6 6-8

A s c i d i a n s

FISH Anchovy 4-6

L i z a r d F i s h 10-12 1 2 - 1 4

P i p e F i s h 6-8 1 8-10 1

1 0 - 1 2 4 12-14 6

S e a Horse 0-2 2 2-4 9 4-6

G r o u p e r 12-14 1

S n a p p e r 0-2 6 2-4 1 0 4-6 2

G r u n t 0-2 2-4

P i n F i s h


MonthLy s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n S o u t h L i d o g r a s s f l a t .

Ff BH(con t . Mo j a r ra 0-2

2 -4 4-6

C r o a k e r 0 -2 7 2-4 3 2 4-6 1 2 6-8 1 6

F i l e F i s h 0-2 2-4 1 '4-6 3 6-8 1

C o w F i s h 18-20

P u f f e r s 0-2 1 2-4 1

S p i n y Box F i s h 4-6 8-10

12-14

Toad F i s h 4-6 10-12 1

B l e n n y 6-8 1 8-10 1

F l o r i d a L i n g 6-8

F l o u n d e r 10-12 1 1 8 - 2 0 2 - 26-28 1

TABLE E-6

M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a fo r c a t c h e s on I n n e r C i t y I s l a n d grass f l a t .

5 / 7 8 6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 2 / 7 9 MOLLUSKS Dove S h e l l 0-2 50 30 1 6

Horn S h e l l 0-2 5

O y s t e r D r i l l 0-2 2

Horse Conch 0- 2 4

S e a Hare 8-10 1 0 - 1 2

N u d i b r a n c h 0-2 3 3 1 2

ARTHROPODS Grass S h r i m p 0-2 1 5 1 4 2 76 1 6 0 95

2-4 4 7 1 3 3 67 4-6 8 2

B a y o n e t S h r i m p 0-2 2 2 5 3 1 4 2-4 5 1 1 1 3 2 2 7 27 4-6 3 4 1 9 1 3 8 6-8 1

Pink S h r i m p 2-4 2 4 1 2 3 7 1 4-6 1 - 1 9 2 0 3 2 2 6-8 1 2 1 9 2 8-10 1 4 6 8

1 0 - 1 2 1 2 3

Rock S h r i m p 0-2 9

Red C l e a n e r 2-4 1 1 S h r i m p

S p i d e r C r a b 0-2 1 1 2-4 1 32 4-6 1 9 4 1 6-8 2 2 1

B l u e C r a b 0- 2 2-4 2 4-6 2 6-8 1 6-10 1 2 4

10-12 1 1 2 - 1 4 1

Mud Crab 0-2 1 2-4 2.


Month ly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n I n n e r C i t y I s l a n d g r a s s f l a t .

5 / 7 8 6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 2 / 7 2 - ARTHROPODS(cont.) H e r m i t C rab 0-2 1 2 1 7

ECHINODERMS S t a r f i s h

Sea U r c h i n

CHORDATES C o l o n i a l

T u n i c a t e A s c i d i a n s

FISH K i l l i f i s h

P i p e F i s h

S e a Horse

S n a p p e r

Grun t

T A B U E-6 ( C o n t i n u e d )

M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a for catches o n I n n e r C i t y I s l a n d g r a s s f l a t

- 5 / 7 8 6 / 7 8 7 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 2 / 7 9 CHORDATES F I S H ( C o n t . ) P i n F i s h 0-2 6 1

2-4 28 77 5 1 4-6 1 8 1 0 0 30 6-8 1 3 1 8 1 6 1 8-10 1 7

1 0 - 1 2 2 S h e e p s h e a d 2-4 1

Mo j arra 2-4 2 1 3 4 1 4-6 4 1 1 1 . 6-8 1

C r o a k e r 0-2 1 2 2-4 32 4-6 7 1 1

1 6 - 1 8 1

J a c k K n i f e 4-6 1 F i s h

F i l e F ' ish 0-2 2-4 1 1 4-6 4 1 6-8 1 8-10 1

P u f f e r s 2 -4 1 4 - 1 6 1

S p i n y Box F i s h 0-2 1 4-6 6-8 8-10 1 1

1 0 - 1 2

Toad F i s h 6-8 8-10 1 1

B l e n n y 2-4 1 4-6 1

F l o r i d a L i n c 1 0 - 1 2 1

F l o u n d e r .-- .. - 8-10 1

TABLE E-7

Y o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s o n O u t e r C i t y I s l a n d zrass f l a t .

5 / 7 8 6 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2 / 7 9 MOLLUSKS Dove S h e l l 0-2 4 2

2-4 1

S e a Hare 1 6 - 1 8 1 8 - 2 0

N u d i b r a n c h 0-2 2-4

ARTHROPODS Grass S h r i m p 0-2 1 1 6 11 1 2 2 22 8

2-4 1 1 9 1 4-6 2 2 6-8 1

B a y o n e t S h r i m p 0-2 2 1 1 2 5 6 2-4 3 25 1 7 5 2 2 7 6 4-6 20 1 4 2 6 1 7 1 7 1 2 9

P i n k S h r i m ? 2-4 4-6 6-8 8-10

1 0 - 1 2 14-16

Rock S h r i m p 0-2 2-4

S p i d e r C r a b 4-6 2 .

A r r o w C r a b 2-4

B l u e C r a b 0-2 2-4 6- 8 1 1 8-10 1

1 6 - 1 8

Yud C r a b 0-2

H e r m i t C r a b 0-2

ECHINODERMS S e a U r c h i n 0-2 6 1

2-4 1 4-6 1 8-10 1


M o n t h l y s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on O u t e r C i t y I s l a n d g r a s s f l a t .

5 / 7 8 6 / 7 8 9 / 7 8 1 0 / 7 8 1 1 / 7 8 1 2 / 7 8 1 / 7 9 2 / 7 3 CHORDATES S e a S q u i r t 0-2 1 3

2-4 1 0 4-6 1

C o l o n i a l T u n i c a t e 0-2 1 7 2

2-4 2 5 5 4-6 1 1 6-8 1

A s c i d i a n s 0-2 3 2-4 2 4-6 6 6-8 3 8-10 1

10-12 1

FISH P i p e F i s h

S e a Horse 0-2 1 4-6 1 6-8 1

16-18 1

G r u n t 2-4 4-6 1

1 6 -1 8 1

P i n F i s h 0-2 1 2 -4 1 7 1 4-6 2 11

S h e e p s h e a d 0-2 1 2 -4 1

TABLE E - 7 ( C o n t i n u e d )

Monthly s i z e f r e q u e n c y d i s t r i b u t i o n d a t a f o r c a t c h e s on O u t e r C i t y I s l a n d q r a s s f l a t .

F I S ~ ( c o n t . ) Mo j a r ra 0-2

2-4 4-6

Croaker

F i l e F i s h

Cow F i s h 10-12 16-18

P u f f e r s

Sp iny Box F i s h 6-8 8-10

Gobv

F l o u n d e r 2-4 1 - 12-14 1

TABLE E-8

T e c h n i c a l names f o r r o l l e r t r a w l d a t a . - Common Name T e c h n i c a l Name Dove S h e l l Co lumbe l l a - r u s t i c o i d e s -- - .- -- Horn S h e l l C e r i t h i u m muscarurn - . O y s t e r D r i l l --- Uros&lnx -- s p . T u l i p S h e l l F a s c i n l a r l a h u n t e r i a ---- Horse Conch P l e u r o p l o c a g l g a n t e a Sea Hare B u r s a t e l l a l e a c h i --- - Nudibranch u n l d e n t i f l e d

Bayonet Shrimp ~ o z e u m a c a r o l i n e n s i s - P i n k Shrimp .--- Penaeus duororum Red C l e a n e r Shrimp H l p p o l y t e wurdemanni Rock Shrimp -onla - - l a e v l g a t a . . r.-- S p i d e r Crab L i b i n l a - d u b l a - Arrow Crab S tenorhynchus -.- s p . - - Blue Crab C a l l i n e c t e s s a p i d u s ( o c c a i s i o n a 1 1 y

o - the r p o r t u n z g - - Mud Crab A v a r i e t y o f members o f t h e f a m i l y

X a n t h i d a e . H e r m i t C rab P r i m a r i l y Pagurus - a n n u l i p e s . -- -- . - S t a r F i s h ----- E c h i n a s t e r s p i n u l o s u s Sea Urch in L y t e c h l n u s - - v a r l e g a t u s Worm Sea Cucumber L e p t o s y n a p t u s - 9.

Sea S q u i r t Molgula q. --- . C o l o n i a l T u n i c a t e .-- C l a v e l l n a -- .- s p . -- A s c i d i a n Drdemnum - sp . , - - B o t r y l u s -- s p . , and o t h e r s .

Anchovy -- Anchoa m i t c h i l l i L i z a r d F i s h -- Synodus -- f o e t e n s K i l l i f i s h 7 -- Lucan la p a r v a , r a r e l y a Fundulus . ---- P i p e F i s h F i m a r l l y Syngna thus I-_- f l o r l d a e . S e a H o r s e P r i m a r i l y H~ppocarnpus s o s t e r a e b u t -----

o c c a i s i o n a l l y Hlppocampus e r e c t u s . -- S i l v e r s i d e s Menid ia - .- - - - b e r y l l i n a -- B a r r a c u d a S h y r a e n a b a r r a c u d a A_. . . - - --- - Grouper U n l d e n m l e d Snapper P r i m a r i l y L u t j a n u s &seus. Grunt P r i m a r i l y Haemulon striaturn. P i n F i s h Lagadon r h z i b o i d e s --.- -- Sheepshead Archosa rgus p r o b a t o c e p h a l u s Mo j arra ~ a r i l y u c ~ n o s t o m u s . - -. - - - -. - s p . . C r o a k e r P r i m a r i l y m d l e l l a c h r y s u r a and

L e i o s t o m u s ~ ~ a n t h u r u s .


T e c h n i c a l names f o r r o l l e r t r a w l d a t a .

Wrasse H a l i c -- F i l e F i s h -~---

P r l m a r l l y

.omycterus - schoepf i -7 L ~

Grassy Scorp ion F i s h Scorp Goby

B l e n n i e s F l o r i d a Ling F lounder

a few Got h i d e n t i f Uro h y c i s f l o r i d a n u s -3- P r l m a r l l y -- T a r a l i c h t h y s - a l b i g u t t a . -

Discuss ion

Unlike t h e work o f o t h e r s , l i t t l e c o r r e l a t i o n o f d i v e r s i t y

o r numbers w i t h s a l i n i t y was noked. T h i s w a s p robably due t o

t h e s m a l l v a r i a t i o n i n s a l i n i t y between s t a t i o n s . Exposure t o

c u r r e n t s seemed t o have some e f f e c t on d i v e r s i t y . R e l a t i v e t o

d i v e r s i t y , t h e f l a t s ranked i n o r d e r from h i g h e s t t o lowes t a s

fo l l ows : South Lido, i n n e r C i ty I s l a n d , Bird Key Yacht Club,

Wreck, Big P a s s , o u t e r C i ty I s l a n d and Bayf ron t . T i d a l c u r r e n t s

may n o t o f cou r se be t h e d i r e c t c ause , r a t h e r it might be lower

t u r b i d i t y , more s t a b l e s a l i n i t y , e t c . t h a t would be a s s o c i a t e d

wi th t h e Gulf w a t e r s .

I n i n t e r p r e t i n g t h i s d a t a one should remember t h a t t h e r e

were f a i r l y s e v e r e r e d t i d e s i n September 1978. The October and

November c a t c h e s were down c o n s i d e r a b l y i n bo th d i v e r s i t y and

numbers o f f i s h e s wh i l e t h e l e s s e f f e c t e d an thropods were up

i n bo th c a t e g o r i e s .

A second c o n s i d e r a t i o n i s t h a t t h i s d a t a does no t r e p r e s e n t

a f u l l y e a r o f sampl ing. March and A p r i l were o m i t t e d from t h e

t a b l e s and g raphs y e t t h e y had some i n t e r e s t i n g c a t c h e s t h a t

w i l l be r e p o r t e d l a t e r . The numbers o f organisms caught d i d

n o t , however, go up u n t i l May 1979.

F igu re s E - 2 th rough E - 6 show g r a p h i c a l l y t h e monthly s i z e -

f requency d i s t r i b u t i o n d a t a f o r f i v e o f t h e more abundant t y p e s

of organisms.

FIGURE E-2 Monthly size-frequency distribution for grass shrimp.

Bit Pass Grass Flat

Oct .I C5 o

' 7 9

Feb.

I I I I I

Jul .I C

-150

1 0 0 -5 0

-150 -100 -5 0

Wreck Grass Flat

1 3 5 7 3

Bird Kev Yacht Club Gr ' 7 8 May

-1 5 0 -10 0 5 0

May

Jun .

Sep.

Jun. 1 b0

?

0

Sep . 5 0

d -

Oct . I 1 5 0

Dec. I 1 1 0 0

Bavfront Grass Flat

Jun .I Aug .

1 5 0

Sep. I t 5 0

Oct. I C 5 0

' 7 9 Jan. 5 0

I I

Length (em)

FIGURE E-2 ( C o n t i n u e d ) Mon th ly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r g r a s s s h r i m p .

O u t e r C i t y I s l a n d F l a t

' I 8 (1.50 Mav .

- ' 7 9 J a n

Feb

S o u t h L i d o Grass F l a t J u n .I J u l .I ---

Oct. 5 0

Nov .- -2 5 0 -200 -150 -100 -50

-250 -200 -150 -10 0 -5 0

Feb 5 0

L e n g t h (cm) E-28

I n n e r C i t v I s l a n d F l a t

J u n . 1 J u l . 1 Sep . I 1 5 0

Oct. 1 1 5 0

FIGURE _E- 3 Monthly size-frequency distribution for bayonet shrimp.

(Tozeuma carolinensis) - , lzss Grass Flat , May 15

30 15

Nov. 3 0 15

1 3 5 7 9 Length ( cm 1

Wreck Grzss Flat '78 May 5

I I

July 15

Oct. I

'79 Jan. 15

I I

July Ja:I 3 0 15

3 0 Oct. 15

Nov . - Dee . - '79 Jan.

Aug . - Sepl

Oct . Nov . Dec . '79 Jan.

Feb .

Ba front Grass Flat

= = I l l 5

FIGURE E-3 ( C o n t i n u e d ) Monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r b a y o n e t s h r i m p .

(Tozeuma c a r o l i n e n s i s )

May [ u t e r z v I s l a n d Flat,

4 5

J a n . 1 5

Feb.

1 3 5 7 9 Length (em)

Sou th Lido G r a s s F l a t J u n . I

I n n e r C i t v I s l a n d F l a t ' 7 8 1

J u l .

Feb ' .

, , 1: 1 5

1 3 5 7 9

1 5

S ~ D . I

FIGURE E-4 Monthly size-frequency distribution for pink shrimp.

(Penaeus duorarum)

1 3 5 7 9 1 1 1 3 1 3 5 7 9 1 1 1 3 Length (cm) Length(cm)

Wreck Grass Flat

5

1 0 5

1 0 5

1 0 5

1 0 5

1 0 5

1 2 5 1 9 1 1 1 3 7 9 11 1 3 Length( c : ~ : ) %ength(crn)

FIGURE E - 4 ( C o n t i n u e d ) Monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r p i n k s h r i m p .

( P e n a e u s duorarum)

Sou th L i d o Grass F l a t ' 7 8 1 1

' 7 8 May J u n

S ~ P .

O c t

Nov.

Dee.

J a n . Feb.

J u n 5

O u t e r C i t y I s l a n d Grass F l a t

A I I I 1 I I

I

J a n .I 1

A Feb .I

i A 'I b 11 1%

1

1 3 5 7 9 1 1 1 . 3 1 3 5 7 9 1 1 1 3 Lengthccm) Length(cm1

Length (cm)

FIGURE E-5 Monthly s i z e - f r e q u e n c y d i s t r i b u t i . o n f o r p i n f i s h ( L a g a d o n r h o m b o i d e s ) . - - - . -- - --- -- - "

B i g P a s s Grass F l a t B i r d Key Yacht Club G r a s s F l a t . ' 78 - 1 0 0 May -7 5

-5 0

J u n e - 2 5

, 1 2 5 O c t . . . l o o

Feb. Nov. Dec. -.

Sep. . Oct . . Nov. Dec.

. -

B a y f r o n t Grass F l a t I I

' 7 9 2 5 J a n .

. 1'

Length (cm) L e n g t h ( c n ) E-33

F I G W E E-5 (con't) Xonthly size-frequency distribution for pinfish(Lacadon rhomboides).

1 3 5 7 9 1 1 1 3 1 3 5 7 9 1 1 1 3 Length(cm) Length(cm1

r South Lido Grass Flat I

Sept 2 5

&'- ' 7 3 ,Tc3.n. '25 - Feb.

- - 2 5

I I I I I . 1 3 5 7 9 1 1 1 3

Lengthccm)

FIGURE E-6 Month ly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r f i l e f i s h .

( X o n a c a n t h u s h i s p i d u s

Bie P a s s Grass F l a t ' 7 8 May J u n e I A

I . Wreck Grgss F l a t .

1

5

J a n . 1

J u n e

J u l y

S e p t Oct.

Nov .

B i r d Kev Yach t C l u b Grass F l a t

- A / -

J u n e

- 5

- 5

-15 -1 0

Dec.

Dec. 1

- 5

- 1 5

J u l y

- 5

-1 5 -10

/ \

J a n .

Oct. 1 I 2 0

- 10 - 5

J u n e

"5 Feb.

1 3 5 7 9 11 Length(cm)

I I I I I I

1 3 5 7 9 1 1 Leng th (cm)

/

5

- 5

FIGURE E-6 ( C o n t i n u e d ) Monthly s i z e - f r e q u e n c y d i s t r i b u t i o n f o r f i l e f i s h .

(Monacanthus h i s p i d u s )

O u t e r C i t I s l a n d F l a t

;:: l r p

S ~ P . -5

O c t . -

I

Feb - I

I I I I I I

1 3 5 7 9 1 1 Length (cm)

Sou th Lido Grass Tlat

J u n

I n n e r C i t y I s l a n d F l a t I I

J u l

Sep Oct

Length (cm)

J u n . J u l .

Sep . Oct .

.

.

.

- 5 - - 5

- 15

- 5

- 2 0

A s w i t h o t h e r s p e c i e s , t h e a p p a r e n t s e a s o n a l d i s t r i b u t i o n

o f s p e c i e s may v a r y as a f u n c t i o n o f c a p t u r e t e c h n i q u e s as w e l l

as p o p u l a t i o n s i z e . More g r a s s shr imp were caugh t when t h e n e t

meshes were plugged w i t h a l g a e . T h i s was g e n e r a l l y t h e case

f o r small o rgan i sms . L a r g e r o rgan i sms c o u l d f r e q u e n t l y e s c a p e

t h e n e t , t h e r e b y b i a s i n g t h e sample . These f a c t o r s s h o u l d be

k e p t i n mind when examining t h e d a t a .

S e v e r a l a r t h r o p o d s were f r e q u e n t l y c o l l e c t e d , w i t h shr imp

b e i n g t h e most numerous. The g r a s s sh r imp were s e v e r a l s p e c i e s

lumped t o g e t h e r i n one c a t e g o r y ( s e e t a b l e E-8) . Grass shr imp

were by f a r most o f t e n caugh t i n December and J a n u a r y w i t h a

second peak i n May and J u n e . They were most numerous on t h e

South Lido and C i t y I s l a n d g r a s s f l a t s . A s w i t h t h e o t h e r

sh r imp, t h e r e d t i d e seemed t o have reduced p r e d a t o r s s o a

r e c o r d c a t c h w a s o b t a i n e d i n t h e f a l l o f 1978.

Bayonet shr imp are a l s o small enough t o e x h i b i t some o f

t h e c a t c h problems due t o mesh s i z e . They w e r e g e n e r a l l y c a u g h t

t h r o u g h o u t t h e r e c o r d i n g p e r i o d w i t h no p a r t i c u l a r p e a k s . Some

s t a t i o n s show d e f i n i t e s e a s o n a l i t y , b u t when one s t a t i o n is

peak ing a n o t h e r may be d r o p p i n g .

Big P a s s g r a s s f l a t d e f i n i t e l y had t h e h i g h e s t peaks and

most c o n s t a n t p o p u l a t i o n s o f bayone t sh r imp . G e n e r a l l y t h e

f l a t s w i t h c u r r e n t f low produced more bayone t sh r imp t h r o u g h o u t

t h e r e c o r d i n g p e r i o d . However, i n J u n e , b o t h t h e t h e Wreck and

Bayf ron t g r a s s f l a t s had l a r g e p o p u l a t i o n p e a k s . No e x p l a n a t i o n

i s y e t a p p a r e n t f o r t h e seeming ly s p o r a d i c v a r i a t i o n s i n t h e

bayone t shr imp p o p u l a t i o n s .

Pink shr imp had a r e c o r d y e a r on t h e g r a s s f l a t s i n t h e

f a l l . B a i t sh r imper s from t h e Cor tez a r e a c la imed it w a s t h e

b e s t y e a r t h e y had e v e r seen . Through October , November and

t h e f i rs t p a r t of December many l a r g e shrimp were caught a t

n i g h t on t h e I n n e r C i t y I s l a n d s ' f l a t s . I t wasn ' t unusua l t o

g e t 50 pounds o f c l e a n e d shrimp i n t h r e e hou r s . The l a r g e s t

shrimp were o v e r 2 0 cm. long from t h e t i p o f t h e ro s t rum t o

t h e t i p o f t h e t e l s o n . It seems l i k e l y t h a t t h e h i g h popula-

t i o n s were due, i n p a r t a t l e a s t , t o p r e d a t o r r e d u c t i o n by

t h e r e d t i d e .

Major d rops o f shrimp were appa ren t a t t h e i n n e r C i t y

I s l a n d and t h e Wreck g r a s s f l a t s by June b u t n o t a t t h e o t h e r

s t a t i o n s u n t i l October . A s t e a d y s i z e i n c r e a s e was no t ed a t

t h e i n n e r C i t y I s l a n d g r a s s f l a t . The ave rage monthly i n -

c r e a s e i n l e n g t h o f t h e p o p u l a t i o n from J u l y t o November was

about 1 . 5 cm. Bird Key Yacht Club, o u t e r C i t y I s l a n d and South

Lido g r a s s f l a t s e x h i b i t e d sudden peaks i n October and then a

r a p i d drop i n t o November. The shrimp were a g a i n p r e s e n t i n l a r g e

numbers i n December a t t h e o u t e r C i ty I s l a n d g r a s s f l a t bu t no

such r eoccu rance t o o k p l a c e a t t h e o t h e r two s t a t i o n s . The Big

Pas s and t h e Bayf ron t g r a s s f l a t s produced few shrimp whi le t h e

Wreck had a s m a l l b u t s t e a d y p o p u l a t i o n .

Echinoderms were a l s o f r e q u e n t l y caugh t . Sea u r c h i n s

seemed t o have s m a l l r e p r e s e n t a t i v e s th roughout t h e summer and

f a l l wi th a peak from October th rough November, depending on t h e

s t a t i o n . The l a r g e s t p o p u l a t i o n s o c c u r r e d a t t h e South Lido

g r a s s f l a t .

Young s t a r f i s h ( E c h i n a s t e r ) were common on t h e Big P a s s

and t h e i n n e r C i t y I s l a n d g r a s s f l a t s w i t h h i g h e s t c o u n t s oc-

c u r r i n g i n J u n e and J u l y . The g r a s s f l a t o f f t h e s o u t h e n d o f

Longboat Key h a s a l s o been found t o h a v e l a r g e numbers o f t h i s

s t a r f i s h .

Sea s q u i r t s , c o l o n i a l t u n i c a t e s a n d a s c i d i a n s peaked i n

J a n u a r y and F e b r u a r y w i t h t h e l a r g e s t numbers on t h e Wreck, Bay-

f r o n t , B i r d Key Yacht Club and o u t e r C i t y I s l a n d g r a s s f l a t s .

The t u n i c a t e s d i s a p p e a r e d q u i c k l y i n l a t e r March 1979 .

Dur ing t h i s r e c o r d i n g p e r i o d , t h e l a r g e s t numbers a n d g r e a t -

est d i v e r s i t y o f f i s h were c a u g h t d u r i n g t h e summer months . Win-

t e r was t h e second b e s t s e a s o n . The r e d t i d e p r o b a b l y had a

ma jo r i n f l u e n c e on numbers a n d d i v e r s i t y o f f i s h t h r o u g h o u t t h e

f a l l months . A s t e a d y r e c o v e r y began a t most s t a t i o n s i n Novem-

b e r . The a v e r a g e number o f f i s h c a u g h t at a l l s t a t i o n s d u r i n g

May, J u n e and J u l y w a s 160 w h i l e t h e n e x t h i g h e s t p e r i o d w a s

d u r i n g December, J a n u a r y and F e b r u a r y w i t h a n a v e r a g e o f 40.

The most p r o d u c t i v e f l a t s i n t e r m s o f t h e a v e r a g e monthly

t a k e n f o r t h e r e p o r t i n g p e r i o d were B i r d Key Yacht Club g r a s s

f l a t w i t h 109/month and t h e Wreck g r a s s f l a t w i t h 100/month .

Sou th Lido had 82/month, i n n e r e i t y I s l a n d had 75/month, Big

P a s s had 67/month, B a y f r o n t had 33/month and o u t e r C i t y I s l a n d

had a n a v e r a g e o f 3 l /mon th . The r a n k i n g f o r d i v e r s i t y t h r o u g h -

o u t t h e p e r i o d w a s a s f o l l o w s : S o u t h L ido (18 s p e c i e s ) , i n n e r

C i t y I s l a n d ( 1 8 ) , B i r d Key Yacht Club ( 1 7 ) , Wreck (161 , Big P a s s

( I S ) , o u t e r C i t y I s l a n d ( 1 3 ) - a n d B a y f r o n t ( 1 3 ) .

The dominant f i s h i n t e r m s o f t h e numbers c a u g h t were p i n

f i s h a n d f i l e f i s h . P i n f i s h r e p r e s e n t e d 79% o f t h e May c a t c h ,

7 9 % o f t h e J u n e c a t c h , 81% o f t h e J u l y c a t c h and 39% o f t h e

September c a t c h . P i n f i s h a g a i n made up a dominant p a r t o f t h e

c a t c h i n t h e w i n t e r . Growth r a t e s were a round 1 cm/month f o r

May, June and J u l y p o p u l a t i o n s . The most p r o d u c t i v e f l a t s f o r

p i n f i s h were t h e Wreck, B i rd Key Yacht Club, South ~ i d o and

i n n e r C i t y I s l a n d g r a s s f l a t s . The h i g h e s t c o u n t was 5 4 5 @ i n

f i s h i n J u l y a t t h e Wreck g r a s s f l a t . Obvious ly p i n f i s h p l a y

a major r o l e i n t h e g r a s s f l a t community.

The second most dominant f i s h i n terms o f numbers w a s t h e

f i l e f i s h . Only 11% o f t h e May c a t c h w a s f i l e f i s h b u t t h e y

r e p r e s e n t e d 7 6 % i n December. The d a t a would i n d i c a t e t h a t t h e y

grow more t h a n 2 cm. from November t o December. A l l g r a s s f l a t s

had h i g h peaks d u r i n g some month. The December coun t a t t h e

Big P a s s g r a s s f l a t w a s by f a r t h e l a r g e s t .

O t h e r f a i r l y h i g h p o p u l a t i o n l e v e l s were r e p r e s e n t e d by

t h e s t r i p e d g r u n t s and t h e c r o a k e r s . These s p e c i e s a l s o peaked

i n t h e summer.

P r i o r t o c o l l e c t i n g w i t h t h e r o l l e r t r a w l a w i m i l a r s t u d y

was done w i t h 2 0 f t . s e i n e n e t s p u l l e d by s t u d e n t s . The domi-

n a n t s p e c i e s i n t h a t s t u d y were t h e p i n f i s h and m o j a r r a . Mo-

j a r r a are f a i r l y i n f r e q u e n t i n t h e p r e s e n t s t u d y . T h i s i s

p r o b a b l y due t o t h e d i f f e r e n c e i n t h e c o l l e c t i o n method. Fewer

a n c h o v i e s and s a r d i n e s have a l s o been n o t e d i n t h e c u r r e n t s t u d y

These f i s h p r o b a b l y a v o i d t h e narrow r o l l e r t rawl and n o t t h e

s e i n e n e t s .

O t h e r s p e c i e s e x h i b i t i n g summer p e a k s e a s o n a l i t y were

g r o u p e r , s n a p p e r , p i p e f i s h , sea h o r s e s , t r o u t , g r a s s y s c o r p i o n

f i s h , a n d f l o u n d e r . The o n l y f i s h b e s i d e s t h e f i l e f i s h w i t h a

d e f i n i t e w i n t e r t r e n d was t h e F l o r i d a Ling. Pe rhaps some f i s h

would have shown f a l l peaks had it n o t been f o r t h e r e d t i d e .

Summary

A l l o f t h e g r a s s f l a t s seem p r o d u c t i v e a t - s o m e t i m e and

p r o b a b l y c o n t r i b u t e s i g n i f i c a n t l y t o t h e bay food c h a i n s . The

most s t r e s s e d f l a t i s p r o b a b l y t h e Bayf ron t g r a s s f l a t . Pe r -

h a p s t h e f r e q u e n t a n n o x i a problems n o t e d a t t h i s f l a t have had

a n e f f e c t on t h e f l a t ' s f a u n a . A more i n t e n s i v e s t u d y w i l l be

under taken t o d e t e r m i n e why t h e Wreck and Bayf ron t g r a s s f l a t s ,

which are s o c l o s e t o g e t h e r , d i f f e r s o much.

F. Bib l iography

1. American P u b l i c Hea l th A s s o c i a t i o n , American Water Works Assoc i a t i on , and Water P o l l u t i o n Con t ro l Fede ra t i on . 1975. Standard methods f o r t h e examinat ion o f wa te r and was te w a t e r . Am. P u b l i c Hea l th Assoc. Washington, D . C .

2 . Ayer, F rede r i ck B . , Cynthia Naruaez and Bryan S. Reid. I n v e s t i g a t i o n i n t o s o u r c e s o f w a t e r p o l l u t i o n i n two c o u n t i e s . Environmental S t u d i e s Program. New Col lege . S a r a s o t a , F l o r i d a .

3 . Barnhard, E a r l A . 1969 Bay r e p o r t . B I O . Environmental S t u d i e s Program. New Col lege .

4 . B a u l t , Edward I . 1972, Hydrology o f Alabama e s t u a r i n e a r e a s . Alabama Marine Resources Labora tory , Dauphin I s l a n d , Alabama.

5. Ca r l son , Pau l . 1970. Biochemical oxygen demand. New Col lege S a r a s o t a , F l o r i d a . -

6 . C l ibu rn , J. William. 1964. A Key t o t h e F i shes o f Missis- s i p p i Sound and Adjacent Waters. Gulf Coast Research L a b o r a t o r i e s . Ocean S p r i n g s , M i s s i s s i p p i .

7. Dragovich, Alexander, John A . Ke l ly J r . and A. Grant Goodel l . 1968. Hydro log icc l and b i o l o $ i c a l c h a r a c t e r i s t i c s o f F l o r i d a ' s west c o a s t t r i b u t a r ~ e s . F i she ry B u l l e t i n : Volume 6 6 , No. 3 .

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Hydrologic and Biological Mom itoring of Lower SIrasota Bay