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Last modified
12/30/2024 12:18:08 PM
Creation date
12/30/2024 12:12:16 PM
Metadata
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Template:
Official Documents
Official Document Type
Agreement
Approved Date
12/03/2024
Control Number
2024-305
Agenda Item Number
9.Q.
Entity Name
Indian River Lagoon Council
Subject
Agency Cost Share Agreement for the Transformation Habitat Restoration at Big Slough
and Preachers Hole (Certified Copy – Original to Edgar Payan)
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A TRUE COPY <br />CEiR. T IF CATION ON LAST PAGE <br />RYAN L. BUTLER, CLLRK <br />SG. Seagrass Restoration at Big Slough, Sebastian Inlet <br />Preachers Hole North Wabasso Causeway, Indian River County <br />Restoration Leaders: Melissa Meisenburg, Senior Lagoon Environmental Specialist, Indian <br />River County (IRC) <br />Carter Henne, President, Sea & Shoreline LLC <br />The Indian River County seagrass project is designed to restore and enhance important seagrass <br />communities near the Sebastian Inlet and Pelican Island National Wildlife Refuge. The sites were identified <br />based on its proximity to the Sebastian Inlet, water quality and shelter from wave energy. Both sites <br />historically supported robust seagrass meadows but suffered extensive losses after widespread algal <br />blooms in 2011 and 2016. The sites now have consistently sufficient water quality to support seagrass. <br />Experts believe insufficient recruitment and the lack of a seed bank at the project sites is the primary <br />driver for the lack of seagrass cover. <br />This project will restore vital seagrass habitat lost at the two sites in proximity to Sebastian inlet that <br />functions as an important estuary to ocean corridor. Water clarity is consistently conducive for seagrass <br />survival at the sites. It is expected seeds and fragments generated from the project will accelerate <br />recruitment in adjacent areas of the Indian River Lagoon (IRL). <br />SITE DELIVERABLES <br />• Big Slough (27.8179800, -80.432373°). Restore a 12.8 -acre seagrass habitat. <br />• Preachers Hole (27.777054°, -80.424806°). Restore a 10 -acre seagrass <br />habitat. <br />• Seagrass will be processed for planting by personnel trained at a Sea & <br />Shoreline LLC facility in the underserved community of Lincoln Park in <br />Fort Pierce, FL. <br />PARTNER ROLES, EXPERIENCE and Specific Design Considerations: <br />Seagrass (SG) <br />• Sea & Shoreline (S&S) will utilize proven seagrass restoration design and <br />installation at both seagrass sites utilizing Halodule wrightii (e.g., density <br />= planting units). <br />• Indian River County (IRC) and Sea & Shoreline (S&S) will conduct initial <br />seagrass assessments one-month post installation continuing to monitor monthly for the first <br />year and quarterly for the next two years. <br />• Grow SAVT" Herbivory Exclusion Devices will be placed temporarily for a period of 12 months on <br />10 -foot centers with 25 devices per acre. <br />SITE DESCRIPTION, DESIGN AND MONITORING <br />Big Slough Site Description: Big Slough (Indian River County, FL) is located three miles south of Sebastian <br />Inlet on the eastern side of the IRL surrounded by Melba Island and Pelican Island National Wildlife Refuge <br />(figure 1). The site's proximity to the inlet allows for improved water flow and water quality needed for <br />successful seagrass restoration projects. The natural islands adjacent to Big Slough shelter the site from <br />wave energy, reducing sediment transport and ultimately improving seagrass establishment. <br />Design: Indian River County will work with Sea & Shoreline to cultivate, plant and maintain 12.8 acres of <br />seagrass within Big Slough (Figure 2). The seagrass utilized in the project is a pure strain cultivar of <br />Halodule wrightii, originally collected from previous projects within the IRL. Seagrass will be harvested <br />
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