Spatial Characterization of the Distribution of

Submerged Aquatic Vegetation in the

Shark River Slough Estuary

PROJECT SUMMARY

I propose to conduct an extensive survey of the Shark River in the Florida Everglades a) to determine the distribution, density, and species composition of submerged aquatic vegetation (SAV) of this region and b) to document differences in elemental and isotopic compositions of SAV in this area. Secondly, by applying principle component analyses and clustering algorithms to water quality data from existing monitoring stations in the area, I will determine the primary parameters controlling the distribution of vegetation within this area. Lastly, Florida manatees (Trichechus manatus latirostris) are known to feed and travel in this area. In documenting the differences in isotope compositions of SAV, this investigation will explore the utility of natural variability in isotope ratios as a tool for examining feeding ecology and behavior of these endangered marine mammals. By interpreting the chronological assimilation of varying isotopic ratios, I will use manatee body hairs as recorders of time-integrated dietary information reflecting types of food consumed and regions in which feeding bouts occurred. The data gleaned from this project will provide more comprehensive information for habitat managers in planning restoration and conservation management activities in the region.