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Water Use in Florida, 2005 and Trends 1950-2005

Water is among Florida's most valued resources. The State has more than 1,700 streams and rivers, 7,800 freshwater lakes, 700 springs, 11 million acres of wetlands, and underlying aquifers yielding quantities of freshwater necessary for both human and environmental needs (Fernald and Purdum, 1998). Although renewable, these water resources are More...

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Salinity Tolerance of Hemichromis letourneuxi

The African jewelfish (Hemichromis letourneuxi) has been established in canals surrounding the Miami area since the 1960s. With changes in water delivery to the park, the species has recently (2000) entered Everglades National Park and expanded its range westward through Big Cypress National Preserve. Simultaneously, African jewelfish from a More...

  • African jewelfish (Hemichromis letourneuxi)

Evaluation of sampling designs to monitor populations of freshwater mussels in small- to mid-sized drainages in the northeastern ecoregion

Freshwater mussels are declining rapidly in response to habitat degradation associated with anthropogenic changes. Williams et. al. (1993) reported that 213 of the 297 recognized taxa are considered endangered, threatened, or of special concern. There is a documented need for BRD centers to provide guidance on freshwater mussel ecology in general, More...

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Deep Water Science Project, Great Lakes

The USGS Great Lakes Science Center (GLSC) has a long history of significant contributions to the understanding of aquatic resources in the Great The main focus of the Center's research is on the long-term dynamics of native and non-native aquatic species and the sustainability of Great Lakes fisheries. Since the Center was established, the fish More...

  • Bottom trawl fish sampling