Marine Resources Geographic Information System and Fishery Resources, January1992

摘要

The Little Manatee River (LMR) Watershed is the focus of a multi-disiplinaryproject featuring the development of watershed-oriented resource management tools and strategies. A comprehensive data base has been developed which includes geographic information system (GIS) coverages and fish community data. Analyses have been conducted to test the integrity of the data and to demonstrate the analysis capabilities relative to watershed impacts on the river and estuary. Fish community data indicate that the LMR supports a diverse fish fauna of over 100 species and that juveniles of several economically valuable species commonly utilize the river as a nursery area. Habitat specific sampling showed that fishes such as snook use marginal habitats of the estuary as nursery areas. Over 147 requests for information were handled by the MRGIS during the grant period. Information outputs included hardcopy maps, digital data, presentations, and demonstrations. Aerial photography was used to evaluate the capability of mapping the impact of boat propellars on submerged aquatic vegetation within the Weedon Island State Preserve. Although propellar scars occur throughout the Preserve, five locations were identified with substantial scarring. Photography of 1:24,000 scale was determined to be effective in identifying areas of significant impacts.