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Pacific Lamprey Lampetra tridentata Status and Distribution in the Clearwater River Drainage, Idaho
Christopher W. Claire
Timothy G. Cochnauer
ACKNOWLEDGEMENTS
• Bonneville Power Administration Deborah Docherty
• Idaho Department of Fish and Game Jody Brostrom
Anne Peterson, Rebecca Repp, Kyle Steele, Terry Douglas
• Bureau of Land Management
Craig Johnson
• Columbia River Research Laboratory Jennifer Bayer
• University of Idaho
Dr. George LaBar
Dr. Dale Everson
STATUS OF LAMPREY IN THE COLUMBIA RIVER AND SNAKE RIVER
• Three species of lamprey present historically in the Columbia River basin, river lamprey, Lampetra ayresi, brook lamprey, Lampetra richardsoni, and Pacific lamprey Lampetra tridentata.
• Pacific lamprey Columbia River and Snake River declines since 1960’s
• Hydropower development, habitat alterations, and land management practices (irrigation, etc.) are thought to be driving decline
• Little is known about life history, habitat utilization, and distribution of the three species.
INTRODUCTION
• Objectives
1. Determine life history of Pacific lamprey and ammocoetes and macrothalmia in the
Clearwater River drainage.
2. Determine habitat utilization and preference of Pacific lamprey ammocoetes in Red River.
3. Determine distribution of Pacific lamprey ammocoetes and macrothalmia in the
Clearwater River drainage.
4. Develop and implement strategies to protect Pacific lamprey ammocoete and macrothalmia habitat in the Clearwater River drainage.
Pacific Lamprey Adult
PACIFIC LAMPREY LIFE HISTORY
• Anadromous, spawn in salmon and steelhead streams in April, May, and June.
• Eggs hatch in ~ 20 days, ammocoetes are eyeless, live in finer substrates (Scott and Crossman 1973)
• Transform at age 4-7 (Beamish and Levings 1991)
• Juveniles migrate in late fall and spring
• 1-2? years in ocean feeding on herring, hake, salmon, and steelhead; marks found on mammals
• Return to rivers to spawn
Bonneville Dam
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
Year
Lam
pre
y A
du
lts
Ice Harbor Dam
0
10,000
20,000
30,000
40,000
50,000
60,000
1962196
4196
6196
8197
0197
2197
4197
6197
8198
0198
2198
4198
6198
8199
0199
2199
4199
6199
8200
0200
2
Year
Lam
pre
y A
du
lts
Lower Granite Dam
0
200
400
600
800
1000
1200
Year
Lam
pre
y A
du
lts
NIGHT
DAY
Clearwater River
N. F. Clearwater
S. F. Clearwater
Dworshak Dam
PROJECT AREA
WA
OR
MT
ID
PROJECT AREA HISTORY
• White settlement of Clearwater River drainage 1860-1920, habitat alterations predominantly 1920-2002
• Lewiston Dam on main Clearwater 1927-1972
• Harpster Dam on South Fork Clearwater River rkm 32.0 Grangeville Electric Light and Power Company 1910, removed 1963
HARPSTER DAM
METHODS
• Life History, Distribution, and Habitat Utilization assessment
- Trapping and electrofishing
• Habitat Utilization in Red River:
-Red River segmented into 1 km sections, randomly selected 100 m reach within km
-Classify stream habitat, (riffle, pool, etc.) based on Platts et al. (1983) and Overton et al. (1997).
RESULTS
• Captured 1301 (2000-02) total ammocoetes and macrothalmia electroshocking and trapping in Clearwater River drainage
-614 ammocoetes and macrothalmia electroshocking Red River
-456 ammocoetes and macrothalmia electroshocking South Fork Clearwater River
-207 ammocoetes and macrothalmia in Red River trap
• Pacific lamprey ammocoete density:
-decreased with increasing flow velocity
-decreased with increasing coarse substrate
-increased with increasing riparian canopy cover “shade”
Red River 2000-03
0
5
10
15
20
25
30
35
Length (mm)
Nu
mb
er
00
01
03
South Fork Clearwater River 2000-03
0
5
10
15
20
25
30
Length (mm)
Num
ber
000103
Selway River 2002-03
0
1
2
3
45
6
7
8
9
10
Length (mm)
Nu
mb
er
2002
2003
Lochsa 2002-03
0
1
2
3
4
5
6
7
8
Length (mm)
Num
ber
2002
2003
Pacific Lamprey Percentage Transformed, Lolo Creek Rotary Screen Trap 1994-2003
0
10
20
30
40
50
60
70
80
Year
Per
cent
Tra
nsfo
rmed
* * * *
* No data available
*
Courtesy Nez Perce Tribal Fisheries 2003
Distribution S. F. Clearwater R.
drainage
WA
IDMT
OR
PACIFIC LAMPREY DISTRIBUTION 1970PACIFIC LAMPREY DISTRIBUTION 1980PACIFIC LAMPREY DISTRIBUTION 2003
SUMMARY
• 2000-03 sampling indicates possible low densities and lack of recruitment
• Lower Granite Dam counts in 1995-2003 continue to average <600, (Adults)
• Distribution restricted to mainstem Selway, Lochsa, Rivers, Middle Fork Clearwater, and S. F. Clearwater River
• Measure stream velocity, stream depth, substrate composition (Platts et al. 1983), stream temperature, and riparian canopy for unit and site of capture
- Velocity: at substrate, and .6
- Maximum Depth: to 0.10 m- Substrate: size classes
- Temperature: @ stream surface - Riparian Canopy: Densiometer (4 readings in a unit)
• Evaluated the Pacific lamprey ammocoete density (/100 m2) and parameter relationship with ANOVA, Linear regression, and Multiple regression ( = 0.05)
Red River(randomly sampled units)
Total Total Total Density
Habitat Type Lamprey Captured Area Fished m2 Time Fished (Min) (Lamprey/100m2) C.P.U.E. Lmp/Min.
Lateral and 342 1283.4 1461 26.6 0.23Straight Scour Pools
Riffle 15 603.5 726 2.5 0.02
Riffle with Pockets 57 1269.8 825 4.5 0.07
Rapids with Boulders 10 357.3 305 2.8 0.03
Alcove 19 7.5 20 253.3 0.95(non random)TOTALS: 443 3521.5 3337 - -Average 12.6 0.13
S.F. Clearwater River(non random)
Lateral Scour 423 137.2 232 308.2 1.82
ANALYSISRegression
Source DF Type III SS Mean Square F Value P >F R-square
Velocity 1 22.84545 22.84545 16.48 0.0007 0.4779
Substrate Crse. 1 12.57106 12.57106 6.42 0.0208 0.2630
Substrate Med. 1 15.94397 15.94397 9.01 0.0070 0.3335
Shade (Canopy) 1 9.18372 9.18372 5.71 0.0280 0.2515
Multiple Regression (Stepwise) ModelSource DF Type III SS Mean Square F/t Value P >F/t R-square
Model 3 23.06964 7.68988 8.58 0.0015 0.6319Error 15 13.44007 0.89600
Corrected Total 18 36.50972
Velocity 1 3.01* 0.0080* --
Substrate Crse. 1 2.30* 0.0350* --
Shade 1 2.25* 0.0400* --Dependent Variable: ldensity
MANAGEMENT
• Development of Pacific Lamprey Habitat Requirement Criteria
• Pacific Lamprey Habitat and Recovery Management Goals
- Persistence of Pacific lamprey in the South Fork Clearwater River drainage, requires maintenance or improvement of remaining lateral scour/straight scour pool habitat and stream riparian canopy cover
Figure courtesty U.S. Army Corps of Engineers, Lower Granite Dam
• Improvement of upstream migrant passage at Snake and Columbia River dams critical for persistence of species
• Improve downstream migrant conditions at Snake River and Columbia River dams
- Increase spill (with average or > flows) - Determine methods to decrease impingement of lamprey on bypass system
Clearwater River Drainage Pacific lamprey distribution 1970
I. Harbor, J. Day, L. Monumental, L. Goose, L. Granite
Red River
Ammocoetes/100 m2 and Flow Velocity
y = -5.3291x + 3.414
R2= 0.4779 (without one lateral scour pool)
0
1
2
3
4
5
6
7
8
9
10
0.000 0.200 0.400 0.600 0.800 1.000 Flow Velocity m/s
(ln
) L
amp
rey/
100
m2
Red River
Ammocetes/100 m2 and Coarse Substrate (Large boulder-cobble)
y = -3.5047x + 3.6688
R2= 0.2630 (without one lateral scour pool)
0
1
2
3
4
5
6
0.0% 20.0% 40.0% 60.0% 80.0% 100.0%Percentage
(ln
) L
amp
rey/
100
m2
Red River
Ammocoetes/100 m2 and Canopy Cover "Shade"
y = 0.0434x + 0.7894
R2 = 0.2515(without one lateral scour pool)
0
1
2
3
4
5
6
7
8
9
10
0.0 10.0 20.0 30.0 40.0 50.0Stream Shade%
(ln)
Lam
prey
/100
m2
Two