26
Westshore Seagrass Transplanting Project City of Tampa, Heather Maggio Tampa Bay Watch, Serra Herndon

Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

  • Upload
    others

  • View
    12

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Westshore Seagrass Transplanting Project City of Tampa, Heather Maggio

Tampa Bay Watch, Serra Herndon

Page 2: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 3: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

History of Canal Dredging Project

• Most Westshore residential canals were created in the 1950’s

• No maintenance responsibility was established

• Citizen requests to dredge sediment buildup for decades

• City analyzed need for dredging in over 30 residential canals

• City developed a project to perform maintenance dredging

• Surveyed the canal for baseline conditions

Page 4: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Project Dredge Design and Criteria

• 20 foot-wide mechanical dredge down centerline of canals • Dredge canal bottom to -5.0 foot mean low water • Assumed slope from outside edges of dredge; this material will also be

removed from within the 20’ wide centerline cut • No impacts to environmental resources (seagrass, oysters, mangroves) • Setbacks: 5’ from docks 10’ from seawall 5’ from env. resources • Dredge materials disposed of at permitted site in Port Tampa Bay

Page 5: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

City’s Construction Contract

• City issued a construction contract to Duncan Seawall for $2.8 Million

• Notice to Proceed issued 2/21/13

• 10 canals received dredging under the contract

• Contract includes dredging of 55,000 cubic yards of material, including contingency amount

Page 6: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Canal 20

Page 7: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 8: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 9: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 10: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 11: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 12: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 13: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 14: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 15: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 16: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 17: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 18: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Project Total Numbers

• 949 square meters of seagrass transplanted to 14 total plots= 2,300 plugs

• COT mitigation was 1,900 plugs- 9 plots of 20m x 10m and 1 plot of 10m x 10m= 1,900 square meters

• TBEP mini-grant project was 400 additional plugs- 4 plots of 10m x 10m= 400 square meters

Page 19: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Monitoring Methodology

• Monitor semi-annually in 2015, 2016 and annually 2017-2019 • Braun Blanquet cover abundance • Short Shoot Density • Canopy Height • Bioturbation • Presence of attached or drift algae

• Monitoring reports submitted to USACE & FDEP annually

Page 20: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Septe

mber

2015

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot

10

Ref

H.w. %

Cover

26-

50%

5-25% 26-50% 26-

50%

26-

50%

26-

50%

26-

50%

5-25% 5-25% 5-25% <5%

S.f. %

Cover

0 0 5-25% 0 0 0 0 0 0 0 0

August

2017

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot

10

Ref

H.w. %

Cover

76-

100%

76-

100%

51-75% 76-

100%

76-

100%

76-

100%

76-

100%

51-75% 51-

75%

76-

100%

5-

25%

S.f. %

Cover

0 0 5-25% 0 0 0 0 0 0 0 0

T.t %

Cover

0 0 0 0 0 0 0 <5% 0 0 0

September

2016

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot

10

Ref

H.w. % Cover 26-

50%

76-

100%

51-

75%

76-

100%

76-

100%

51-

75%

76-

100%

51-

75%

51-

75%

51-

75%

5-

25%

S.f. % Cover 0 0 0 0 0 0 0 0 0 0 0

T.t % Cover 0 <5% 0 0 0 0 0 <5% 0 0 0

One Year Monitoring 2015

Two Year Monitoring 2016

Three Year Monitoring 2017

Page 21: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

August

2017

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot 10

Ref

SSD 9.7Hw 10.1Hw 8.2 Hw

6.6Sf

10.7Hw 14.6Hw 8.1Hw 8.8Hw 7.6Hw

2Tt

7.6Hw 11.7Hw 4.2Hw

CH (cm) 31.4Hw 30.3Hw 30.7 Hw

36Sf

28.6Hw 34.2Hw 34.6Hw 31.6Hw 27.3Hw

28Tt

30.3 Hw 30.1Hw 21.2Hw

One Year Monitoring 2015

Two Year Monitoring 2016

Three Year Monitoring 2017

Sept

2016

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot 10

Ref

SSD 6.6Hw 9.7Hw

5Tt

6.2Hw 9.2Hw 7.7Hw 8.8Hw 8.5Hw 9.4Hw

3Tt

9Hw 7.5Hw 4Hw

CH

(cm)

24.6Hw 29.3H

w 28Tt

28.3Hw 28.2Hw 30.4H

w

29.6H

w

27.4Hw 28.5Hw

11Rm

31.8Hw 29.8Hw 19Hw

Sept

2015

Plot 1

Plot 2

Plot 3

Plot 4

Plot 5

Plot 6

Plot 7

Plot 8

Plot 9

Plot 10

Ref

SSD 9.5Hw 8Hw 10Hw 8.4Hw 8.6Hw 8.2Hw 8.9Hw 6.5Hw 5.1Hw 5.6Hw <1Hw

CH

(cm)

17.7Hw 17.6Hw 18.2Hw 18.2H

w

20.2H

w

18Hw 19.4Hw 19.1Hw 17.2Hw 17.1Hw 0Hw

Page 22: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Public Service Announcement

Page 23: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 24: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0
Page 25: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Thank you! Any questions?

Page 26: Westshore Seagrass Transplanting Project€¦ · August 2017 Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 Plot 6 Plot 7 Plot 8 Plot 9 Plot 10 Ref H.w. % Cover 76- ... 0 0 5-25% 0 0 0 0 0 0

Heather Maggio [email protected]

813-274-8371

Serra Herndon [email protected]

727-867-8166 ext. 227

Contact Info