... Human- Altered Habitats by Bull Sharks in a Florida Nursery Area Tobey H Curtis*1 Florida Program for Shark Research, Florida Museum of Natural History, University of Florida, Museum Road, Gainesville, ... Burgess Florida Program for Shark Research, Florida Museum of Natural History, University of Florida, Museum Road, Gainesville, Florida 32611, USA Abstract Bull Sharks Carcharhinus leucas in the Indian ... altered Altered habitats were delineated using ArcGIS, and the proportion of shark positions in those areas was calculated (i.e., habitat use) To test for selection of altered habitats (the use...