GIS

Florida freshwater habitats provide many essential functions including flood control and nutrient sequestration. While serving as habitat for many fish and wildlife species, wetlands also contribute significantly to the outdoor recreation industry. Despite these services, aquatic habitats contin- ue to face threats, such as urban encroachment, water withdrawals, water-level stabilization, sedimentation, non-native species introduction, cultural eutrophication, and climate change. With Florida’s increasing human population, encroachment and development continues into natural areas, stress-...

Characterizing the habitat of large, navigable rivers is difficult, yet this information is critically important to the conservation of a variety of resident aquatic species. We used low-cost sonar habitat mapping to map benthic substrates throughout nearly 1000 km of four Coastal Plain rivers in Georgia and to quantify the distribution of rocky substrates that may serve as potential spawning habitat for two imperiled sturgeon species, the shortnose sturgeon (Acipenser brevirostrum) and the Atlantic sturgeon (Acipenser oxyrinchus). Although we identified hard, rocky substrates in roughly...