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Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations

Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations. Project Objectives. Determine habitat value of each hole Develop management strategies for each hole No Change Complete filling and restoration of seagrasses Partial filling Enhance habitat value.

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Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations

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  1. Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations

  2. Project Objectives • Determine habitat value of each hole • Develop management strategies for each hole • No Change • Complete filling and restoration of seagrasses • Partial filling • Enhance habitat value

  3. Project Tasks • Fisheries Monitoring • Trawl and Seine Samples- inside and outside holes • Directed Hole-and-Line Sampling • Recreational & Commercial Angler Use • Benthic Monitoring • Benthic Organisms • Physical Parameters- DO, sediment chemistry • Physical Characteristics • Acreage, Depth & Surrounding Depth of holes • Location

  4. Overall Rankings

  5. OPTION 3 (of 4) • Fisheries and Benthos Weighted Equally • Ranking Uses Numerical Values assigned by FIM or Benthos • Fisheries: 9 holes ranked (BIG and NEP not ranked) • Value= 10 - ranked # = x 9 9 • e.g., Shore Acres (#1, “best”) = 10 – 1 = 9 =1 9 9 • Benthos: 11 holes ranked • Value = 12- ranked # = x 11 11 Fisheries Score + Benthos Score(If no Fisheries, only Benthic 2 e.g., BIG, NEP1)

  6. Overall Ranked Comparison:Lowest score = lowest habitat value

  7. Shore Acres • Score: 0.955 • Rank: 1of 11 (highest ranked) • Angler Use: • Recreational: #8 (tied) • Commercial: #4 (tied) • Rationale: Highest ranked hole for fisheries and 2nd highest ranked for benthos. • Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill

  8. Gandy Channel North • Score: 0.833 • Rank: 2 of 11 • Angler Use: • Recreational: #3 (tied) • Commercial: #4 (tied) • Rationale: Highly ranked hole by benthic • Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill

  9. Whiskey Stump Key 2 (East) • Score: 0.707 • Rank: 3 of 11 • Angler Use: • Recreational: #1 • Commercial: #9 (tied for last) • Rationale: Original recommendation upheld. Hole provides unique fish habitat. • Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill

  10. Mac Dill Air Force Base Runway Extension • Score: 0.687 • Rank: 4 of 11 • Angler Use: • Recreational: #10 (access restricted) • Commercial: #6 • Rationale: Hole was historically utilized by recreational fishers before security restrictions. More protected refuge for fish, as recreational fishers are prohibited. Hole partially filled in 1990s. • Objections: Peter Clark Management Recommendation: Keep Hole As Is- Do Not Fill Further

  11. Whiskey Stump Key 1 (West) • Score: 0.672 • Rank: 5 of 11 • Angler Use: • Recreational: #1 • Commercial: #9 (tied for last) • Rationale: Original recommendation upheld. Hole provides unique fish habitat. • Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill

  12. Big Island Cut • Score: 0.545 (Benthic only) • Rank: 6 of 11 • Angler Use: • Recreational: #2 • Commercial: #1 • Rationale: • Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill

  13. St. Petersburg/Clearwater Airport East • Score: 0.530 • Rank: 7 of 11 • Angler Use: • Recreational: #5 • Commercial: #2 • Rationale: • Objections: Management Recommendation: Keep Hole as is Do Not Fill

  14. Cypress Point • Score: 0.359 • Rank: 8 of 11 • Angler Use • Recreational: #6 • Commercial: #3 • Rationale: Erosion problem along eastern beach. Filling could protect against wave energy and support City of Tampa project • Objections: Jan Platt Management Recommendation: Partial filling to stabilize the shoreline. Fill to various depths, including to the photic zone.

  15. Northshore Beach • Score: 0.293 • Rank: 9 of 11 • Angler Use: • Recreational: #8 (tied) • Commercial: #6 (tied) • Rationale: Ranked poorly for fisheries and benthos. • Objections: None Management Recommendation: Fill to surrounding area depth and encourage seagrass expansion.

  16. Northeast St. Petersburg Borrow Pit 1 • Score: 0.180 (Benthic only) • Rank: 10 of 11 • Angler Use: • Recreational: #3 (tied) • Commercial: #6 (tied) • Rationale: Could be developed as a SWIM project. Opportunity for restoration. • Objections: None Management Recommendation: Shallow up hole to between -10 and +3 feet to address hypoxia. Develop intertidal planting shelves.

  17. McKay Bay • Score: 0.101 • Rank: 11 of 11 (lowest ranked) • Angler Use: • Recreational: #6 (tied) • Commercial: #9 (tied for last) • Rationale: Lowest ranked hole for both fisheries and benthos • Objections: None Management Recommendation: Fill hole to surrounding depths

  18. Recommendation Summary* Based on existing habitat value KEEP AS IS • Shore Acres • Gandy Channel North • Whiskey Stump Key 2 (East) • Mac Dill Air Force Base Runway Extension • Whiskey Stump Key 1 (West) • Big Island Cut • St. Petersburg/Clearwater Airport East

  19. Recommendation Summary*Based on existing habitat valueCONSIDER MODIFICATION • Cypress Point-Partial filling to stabilize the shoreline. Fill to various depths, including to the photic zone. • Northshore Beach-Fill to surrounding area depth and encourage seagrass expansion. • Northeast St. Petersburg Borrow Pit 1-Shallow up hole to between -10 and +3 feet to address hypoxia. Develop intertidal planting shelves. • McKay Bay-Fill hole to surrounding depths

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