Interactions of a single species (population) or an association of different species (community) occupying a particular region, including their biotic and abiotic environments.
Project is designed to integrate studies from a number of researchers compiling data from terrestrial, marine, and freshwater ecosystems within south Florida. Links to publications, maps, posters, and data of studies.
Report prepared for the U.S. Fish and Wildlife Service with descriptions of exotic aquatic species introduced in the southeast United States with information on populations, geographic distribution, and origins.
Information on the NWRC Wetlands Ecology Branch, which conducts research related to sustainable management and restoration of the nation's coastal saltwater wetlands, freshwater wetlands, submerged aquatic ecosystems, and coastal prairie.
Main page for accessing links for information and data on the San Francisco Bay estuary and its watershed with links to highlights, water, biology, wetlands, hazards, digital maps, geologic mapping, winds, bathymetry and overview of the Bay.
Clearinghouse for the description and availability of multiple geospatial datasets relating to Alaska from many federal, state and local cooperating agencies under the coordination of the Alaska Geographic Data Committee.
Homepage for programs of the Biological Science Office at the Alaska Science Center in Anchorage on birds, mammals, ecosystems and habitats, fish and fisheries, and other biological subjects.
Links to volcanism, volcanic history, volcanic rocks, and general geology by state, by region, national parks and national monuments and a brief introduction to volcanism around the U.S. entitled: Windows into the past.
U.S. Department of the Interior |
U.S. Geological Survey