Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations
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Transcript of Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations
Tampa Bay Dredged Hole Habitat Tampa Bay Dredged Hole Habitat Assessment Project: Assessment Project:
Management RecommendationsManagement Recommendations
Project ObjectivesProject Objectives
Determine habitat Determine habitat value of each holevalue of each hole
Develop Develop management management strategies for each strategies for each holehole No ChangeNo Change Complete filling and Complete filling and
restoration of seagrassesrestoration of seagrasses Partial fillingPartial filling Enhance habitat valueEnhance habitat value
Project TasksProject Tasks Fisheries MonitoringFisheries Monitoring
Trawl and Seine Samples- inside and outside holesTrawl and Seine Samples- inside and outside holes Directed Hole-and-Line SamplingDirected Hole-and-Line Sampling Recreational & Commercial Angler UseRecreational & Commercial Angler Use
Benthic MonitoringBenthic Monitoring Benthic OrganismsBenthic Organisms Physical Parameters- DO, sediment chemistryPhysical Parameters- DO, sediment chemistry
Physical CharacteristicsPhysical Characteristics Acreage, Depth & Surrounding Acreage, Depth & Surrounding
Depth of holesDepth of holes LocationLocation
Overall RankingsOverall Rankings
OPTION 3 (of 4)OPTION 3 (of 4) Fisheries and Benthos Weighted EquallyFisheries and Benthos Weighted Equally Ranking Uses Numerical Values assigned by FIM or BenthosRanking Uses Numerical Values assigned by FIM or Benthos
Fisheries: 9 holes ranked (BIG and NEP not ranked) Fisheries: 9 holes ranked (BIG and NEP not ranked) Value= Value= 10 - ranked #10 - ranked # = = x x
9 9 9 9 e.g., Shore Acres (#1, “best”) = e.g., Shore Acres (#1, “best”) = 10 – 110 – 1 = = 9 9 =1 =1
99 9 9 Benthos: 11 holes ranked Benthos: 11 holes ranked Value = Value = 12- ranked #12- ranked # = = x x
11 11 11 11
Fisheries Score + Benthos ScoreFisheries Score + Benthos Score (If no Fisheries, only Benthic(If no Fisheries, only Benthic
22 e.g., BIG, NEP1)e.g., BIG, NEP1)
Overall Ranked Overall Ranked Comparison:Comparison:
Lowest score = lowest Lowest score = lowest habitat valuehabitat valueF is h e r ie s x 1 , B e n t h o s x 1
0 . 1 0 10 . 1 8 0
0 . 2 9 30 . 3 5 9
0 . 5 3 0 0 . 5 4 50 . 6 7 2 0 . 6 8 7 0 . 7 0 7
0 . 8 3 30 . 9 5 5
0 . 0 0 0
0 . 2 0 0
0 . 4 0 0
0 . 6 0 0
0 . 8 0 0
1 . 0 0 0
1 . 2 0 0
M C K N E P 1 N S H C Y P A IR B IG W S K 1 M A C W S K 2 G A N S H AD r e d g e d H o l e
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Shore AcresShore Acres Score: 0.955Score: 0.955 Rank: 1of 11 (highest ranked)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
Gandy Channel NorthGandy Channel North Score: 0.833Score: 0.833 Rank: 2 of 11Rank: 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
Whiskey Stump Key 2 (East)Whiskey Stump Key 2 (East) Score: 0.707Score: 0.707 Rank: 3 of 11Rank: 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
Mac Dill Air Force Base Runway ExtensionMac Dill Air Force Base Runway Extension Score: 0.687Score: 0.687 Rank: 4 of 11Rank: 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
Whiskey Stump Key 1 (West)Whiskey Stump Key 1 (West) Score: 0.672Score: 0.672 Rank: 5 of 11Rank: 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
Big Island CutBig Island Cut Score: 0.545 (Benthic only)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
St. Petersburg/Clearwater Airport EastSt. Petersburg/Clearwater Airport East
Score: 0.530Score: 0.530 Rank: 7 of 11Rank: 7 of 11 Angler Use:
Recreational: #5 Commercial: #2
Rationale: Objections:
Management Recommendation:
Keep Hole as is
Do Not Fill
Cypress PointCypress Point Score: 0.359Score: 0.359 Rank: 8 of 11Rank: 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.
Northshore BeachNorthshore Beach Score: 0.293Score: 0.293 Rank: 9 of 11Rank: 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.
Northeast St. Petersburg Borrow Pit 1Northeast St. Petersburg Borrow Pit 1 Score: 0.180 (Benthic only)Score: 0.180 (Benthic only) Rank: 10 of 11Rank: 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.
McKay BayMcKay 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
Recommendation SummaryRecommendation Summary* Based on existing habitat value * Based on existing habitat value
KEEP AS ISKEEP AS IS Shore AcresShore Acres Gandy Channel NorthGandy Channel North Whiskey Stump Key 2 (East)Whiskey Stump Key 2 (East) Mac Dill Air Force Base Runway ExtensionMac Dill Air Force Base Runway Extension Whiskey Stump Key 1 (West)Whiskey Stump Key 1 (West) Big Island CutBig Island Cut St. Petersburg/Clearwater Airport EastSt. Petersburg/Clearwater Airport East
Recommendation SummaryRecommendation Summary*Based on existing habitat value*Based on existing habitat value
CONSIDER MODIFICATIONCONSIDER MODIFICATION Cypress Point-Cypress Point- Partial filling to stabilize the
shoreline. Fill to various depths, including to the photic zone.
Northshore Beach-Northshore Beach- Fill to surrounding area depth and encourage seagrass expansion.
Northeast St. Petersburg Borrow Pit 1-Northeast St. Petersburg Borrow Pit 1- Shallow up hole to between -10 and +3 feet to address hypoxia. Develop intertidal planting shelves.
McKay Bay-McKay Bay- Fill hole to surrounding depths