Seagrass Management Plan for Big Lagoon and Santa Rosa Sound
In 1999, the Gulf of Mexico Program awarded a grant to the Florida Department of Environmental Protection's Northwest District Office in Pensacola, Fla., to develop seagrass management plan for Big Lagoon and Santa Rosa Sound. The plan was completed in December 2001 and focuses on the management issues regarding seagrass communities and the environmental and human surroundings that impact them.
Seagrass beds have long been recognized as a critical coastal habitat for estuarine fisheries and wildlife. They also function as a direct food source for fish, waterfowl, and sea turtles. Seagrasses serve as major contributors of organic matter to marine food webs, participants in nutrient cycling processes, and stabilizing agents in coastal sedimentation and erosion processes.
Seagrass health and acreage is directly proportional to the health and status of many commercially and recreationally important seafood species such as shrimp, crabs, scallops, redfish, speckled trout, and mullet.
| Watershed, political boundaries and seagrass
distribution of the Pensacola Bay System. The boundary
of Escambia County and Santa Rosa County Florida divides
the Escambia River, Escambia Bay, Pensacola Bay, and Santa
Rosa Sound. The state boundary of Florida and Alabama divides
the Perdido River and Perdido Bay. |
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| A conceptual model of seagrass productivity
depicting the effects of reduced light on seagrass production.
Under low light conditions, less oxygen is produced in
photosynthesis, resulting in lower oxygen availability
to roots and rhizomes, which cause death of tissues from
sulfide toxicity. Designed by Ken Dunton - Used by
permission of the Texas Parks and Wildlife. |
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| The major factors that contribute to loss
of seagrass habitat are primarily from human induced impacts
and include dredging, excessive nutrient inputs, and boating
activities. - Used by permission of the Texas Parks
and Wildlife. |
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| Bruce Beach marsh. A mitigation marsh planted
in 1991 by the FL DEP Ecosystem Restoration Section. This
photo was taken approximately 10 years after initial planting.
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| FDEP volunteers prepare to vegetate a residential shoreline, November 17, 2000. |
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| Shoreline is planted. November 17, 2000. |  |
| Mature buffer zone after approximately one year of growth. |
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| Current seagrass monitoring sites. Big Lagoon
has been assigned eight sites with the remaining twelve
in Santa Rosa Sound. Site ten is considered to be located
within Santa Rosa Sound. |
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| Beach with submerged vegetation visible. |
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| Closeup of seagrass. |
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| Seagrass measurement grid. |
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| Diver planting seagrass. |
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| A group of volunteers plant seagrass. |
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