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The overall goal of the mapping effort was the production of spatially and thematically accurate seagrass habitat map for the 2012 timeframe using 1 foot resolution 5000 x 5000 foot Geotiff tiles and stock IKONOS satellite.imagery (1 meter resolution, multispectral) as collateral. Fieldwork was conducted in order to solve photointerpretation problems and to verify classifications of seagrass density. The resulting imagery and GIS database layers met National Map Accuracy Standards as described by the United States Geological Survey (USGS) for 1:12,000 scale map products. The objectives of this project was to: 1) complete photo-interpretation ofthe imagery and GIS map production; 2) complete an accuracy assessment of the resulting seagrass coverages and revise maps as needed, and 3) complete a narrative final report of mapping procedures and resulting coverage summaries. |
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The overall goal of the mapping effort was the production of spatially and thematically accurate seagrass habitat map for the 2012 timeframe using 1 foot resolution 5000 x 5000 foot Geotiff tiles and stock IKONOS satellite.imagery (1 meter resolution, multispectral) as collateral. Fieldwork was conducted in order to solve photointerpretation problems and to verify classifications of seagrass density. The resulting imagery and GIS database layers met National Map Accuracy Standards as described by the United States Geological Survey (USGS) for 1:12,000 scale map products. The objectives of this project was to: 1) complete photo-interpretation ofthe imagery and GIS map production; 2) complete an accuracy assessment of the resulting seagrass coverages and revise maps as needed, and 3) complete a narrative final report of mapping procedures and resulting coverage summaries. |
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Photo Science, Inc. was contracted to map all deliverables associated with the 2012 photography. Acknowledgement of the South West Water Management District would be appreciated in products derived from this data. |
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The Southwest Florida Water Management District (SWFWMD) is responsible for the protection and management of natural systems and water quality within its geographic boundaries. One component of evaluating the ecological health of coastal ecosystems is to map and monitor submerged aquatic vegetation (SAV) communities. The area of interest includes the mid-shore coastal waters of the District within Citrus and Hernando counities. Estuaries in the geographic area of interest include the Chassahowitzka River, Homosassa River, and the Weeki Wachee River. The project area includes 1,454 cells (approximately 1,304 square miles) and extends from roughly 5 miles offshore to a maximum of 15 miles offshore. Seagrass data were photointerpreted from one foot resolution RGB 5000 x 5000 foot tiles flown in January 2012 and IKONOS satellite imagery (1mresolution, multispectral).The minimum mapping unit for classification was 0.25 acres. |
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The positional accuracy of this data meets USGS NMAS for 1:12000 scale maps. This data has a minimum classification accuracy of 90% for all categories. Mapping conventions applied to the delineation and classification of seagrass categories were: 1) Outer boundaries of beds are more important than internal structure (patchiness, shapes of sand patches within beds). 2) Outer boundaries of beds are more important than density categorization within beds. 3)Minimum Mapping Unit (MMU) is 0.5 acres. |
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SDERPT.SDECREATOR.SEAGRASS2012_SPRINGSCOAST |
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["Seagrass","Anclote / Pithlachascotee","SWFWMD","Benthic","Mapping","Aripeka / Hernando Beach","Waccassassa Bay","Habitat","2012","Weeki Wachee /Chassahowitzka","Homosassa/Crystal River"] |
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en-US |
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