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Freshwater ecosystems
Biological communities and habitats that exist in lakes, rivers, ponds, and other bodies of water that are not salty.
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River ecosystems (2 items)
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Results 1 - 15 of 15 listed by similarity [list alphabetically]
Biological resource status and trends: Lake ecosystems [New Window]
Information concerning status and trends of biological resources, focusing on lake ecosystems
Biological resource status and trends: River and stream ecosystems [New Window]
Information concerning status and trends of biological resources, focusing on river and stream ecosystems
PDF Relations among geology, physiography, land use, and stream habitat conditions in the Buffalo and Current River systems, Missouri and Arkansas [New Window]
Biological resource status and trends: Inland water ecosystems [New Window]
Information concerning status and trends of biological resources, focusing on inland water ecosystems
Farm ponds as critical habitats for native amphibians [New Window]
Constructed farm ponds represent significant breeding, rearing, and overwintering habitat for amphibians in the Driftless Area Ecoregion of Minnesota, Wisconsin, and Iowa. Links to fact sheet, brochure, annual reports, field manual, and final report.
Great Lakes Science Center [New Window]
Site for Great Lakes Science Center, Ann Arbor, which provides information about biological resources in the Great Lakes Basin. Links to personnel, publications, data, library, facilities, research vessels, Great Lakes issues, and research.
Lake Tahoe Data Clearinghouse [New Window]
This website is a gateway to information and data on Lake Tahoe with links to Lake Tahoe Initiative, geography, history, lake facts, GIS Data, DEM, DOQ, DLG imagery, bathymetry, satellite imagery, land cover, census, soils, pictures, and general maps.
PDF Lake monitoring field manual [New Window]
Handbook on monitoring methods for lake management, including program design, sampling methods and protocol, biota and chemical sampling methods, laboratory methods, preservation of data and samples, glossary, and bibliography. (PDF file, 92 pp.)
Platte River Program, a USGS Place-Based Studies Program [New Window]
Site for the Platte River Program in Nebraska an area that is a critical staging area for migratory waterbirds of the Central Flyway. Includes links to color-infrared aerial photos, 1938 historic aerial photos, and Cottonwood Ranch research site.
PDF Studies and trends of selected inland lakes of the Great Lakes Cluster National Parks [New Window]
Report on the status of the biota and ecological factors of the inland lakes of the Great Lakes Cluster Parks: Indiana Dunes, Sleeping Bear Dunes,and Pictured Rocks National Lakeshores and Isle Royale and Voyageurs National Parks. (PDF file, 321 p.)
Ecological studies in the National Water-Quality Assessment (NAWQA) Program [New Window]
Description of cooperative ecological research associated with the National Water-Quality Assessment program with links to current projects, download data, publications, and publications on biological sampling, habitat and laboratory protocols.
Invasive Species Program -- Snakeheads, aquatic invaders [New Window]
On-line version of a USGS Fact Sheet describing Snakeheads, aggressive airbreathing freshwater fishes that are not native to North America. Snakeheads are considered injurious to certain native North American fish and other aquatic wildlife.
Lower Rio Grande Ecosystem Initiative [New Window]
Description of program and links to information on research related to the biotic resources of the lower Rio Grande (between Elephant Butte Reservoir in New Mexico and extending to the Gulf of Mexico) and its adjacent terrestrial habitats.
Water resources of Michigan - programs and projects [New Window]
Brief descriptions of categories of USGS research programs and projects on water resources in Michigan with links to more detailed information on projects.
Water resources of Michigan - restoring natural flow regimes [New Window]
Links to descriptions, maps, photos, and reports of projects related to studies of the effects of dams and flow regulation in watersheds altered by humans in the state of Michigan including Muskegon and Kalamazoo Rivers and the Seney refuge.


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