developing a shoreline habitat restoration and management ... · developing a shoreline habitat...
TRANSCRIPT
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Developing a Shoreline Habitat Restoration and Management Plan
for Brevard County
Jane HartBrevard County
Natural Resources Management Department
L. Walters
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Indian River Lagoon
• 71% in Brevard County
• 246 square miles
• Includes Banana River and portions of Indian River and Mosquito Lagoon
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Significant Ecosystem
• IRL is an Estuary of National Significance
• One of the greatest diversity of plants and animals in the nation
• Seagrass-based ecosystem
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Delicate Balance
• Balance has been disturbed:– Excessive pollutant inputs to the
waterbodies– Accumulation of harmful muck
deposits– Loss of habitat
• Impacts of Poor Water Quality:– Seagrass loss– Shellfish harvests decline– Harmful algae blooms increase– Fish kills increase
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Restoring Balance to the IRL
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Developing a Shoreline Habitat Restoration and Management Plan
IDENTIFY and PRIORITIZE environmental enhancement and erosion protection opportunities along the IRL in Brevard County ENCOURAGE and EXPAND the use of living shoreline
treatments for shoreline stabilization, erosion control, and habitat provision PROTECT water quality in the Lagoon
Oyster Bar - Living Shorelines
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Living Shorelines: Extra Benefits
Photo: UCF
Photo: UCF
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Shoreline Survey and Mapping Project
• 2016/17 DEP CPI grant funding CM714
• Shoreline characteristics must be considered to select appropriate stabilization and restoration methods
• Field survey of ~175 miles of Brevard shoreline in IRL
• Geodatabase development and mapping
• Provides a critical baseline of information
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Shoreline Survey and Mapping Project
Survey points taken every 30 m (developed areas) and every 100 m (undeveloped)
Attribute data collected:• Shoreline type• Vegetation• Oyster presence• Erosion• Slope• Adjacent land use• Water depth• Bottom type• OutfallsUCF student assistants collecting shoreline
slope data at a rip-rap shoreline. Photo provided by Dr. Melinda Donnelly, UCF
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Shoreline SurveyHardened Structures on Shoreline
Bulkhead Bulkhead with Rip-Rap
Hardened Slope Bulkhead with outfall
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Shoreline SurveyPreliminary Results: Shoreline Types
Survey points representing outfalls and shoreline structure types.
Graph prepared by: Dr. M. Donnelly, UCF
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Shoreline SurveyPreliminary Results: Vegetation
• Residential and commercial areas: turf grasses most common
• Undeveloped areas: mangroves most common
Rhizophora mangle commonly found in the lowest intertidal region
Avicennia germinans and Laguncularia racemosa in the middle intertidal regions
Photo: Brevard Zoo
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Shoreline SurveyPreliminary Results: Oysters
• Identified at 651 shoreline locations
• Central and southern portion of county
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Next Steps: Developing a Shoreline Plan
• Developing a Shoreline Habitat Restoration and Management Plan
• 2016/17 IRL NEP Cost-share funding
• Primary data sets for Geodatabase:– Shoreline survey data– Wave energy data – Historic aerial analysis
• A geospatial model will help determine the most suitable shorelines to use “living shorelines” in Brevard.
Image source: SJRWMD
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Save Our Lagoon Project Plan:REDUCE, REMOVE, RESTORE, RESPOND
• Ten year Project Plan • Funded by ½ cent sales tax• Includes $10-million for
Oyster Reefs and Living Shorelines
• Year 1 begins October 1, 2017
FULL PLAN AVAILABLE AT: www.brevardfl.gov/NaturalResources
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Questions?
Photo credit: E. Hart