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Regionalization of Scar Patterns on the Florida Manatee (Trichechus manatus latirostris) Observed at Harbor Branch Oceanographic Institute, Florida.Unknown Date (has links)
The Florida manatee (Trichechus manatus latirostris) is native to Florida and the
Indian River Lagoon. Harbor Branch Oceanographic Institute (HBOI) is located in Indian
River Lagoon and is frequently visited by manatees. The Manatee Project was created in
2009 to document and photograph the manatees visiting HBOI. Analyzing photographs
of 146 manatee that visited HBOI showed that a majority of the injuries sustained were
caused by boats. 97% of the manatee had at least one propeller injury and 31% of the
manatee had at least one skeg injury. Other non-boat related injuries seen in the images
included cold stress and entanglement injuries. This study looked at the prevalence of
scar by anatomical region, the cause of injury, and compared injury locations between
male and female manatees. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2018. / FAU Electronic Theses and Dissertations Collection
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Habitat Use by Bottlenose Dolphins in the Indian River LagoonUnknown Date (has links)
The objective of this research was to examine bottlenose dolphin (Tursiops truncatus) habitat use in the Indian River Lagoon (IRL) based on monthly relocation of photo-identified individuals, prey availability and environmental factors from 2003-2015. We focused on the variation of spatial and temporal abiotic and biotic factors and their influence on bottlenose dolphin habitat use patterns. Harbor Branch Oceanographic Institute (HBOI) conducted monthly photo-identification surveys along the length of the IRL and GPS locations of photographed dolphins were collected at the time of surveying. Stratified random samples of prey and environmental variables were collected monthly by the Florida Fish and Wildlife Conservation Commission (FWC) as part of the Fisheries-Independent Monitoring (FIM) program. Kernel density estimation was used to determine the magnitude-per-unit area of dolphins across a continuous raster surface of the IRL by wet and dry seasons each year, the values of which were used as a response variable in Classification and regression tree (CART) analyses with FIM fish community and environmental factors as predictors. Understanding how dolphins respond to environmental factors over time in the IRL could be used to predict future responses in estuaries and prioritize conservation and restoration actions. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2019. / FAU Electronic Theses and Dissertations Collection
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