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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 (4 items)
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Results 21 - 30 of 31 listed by similarity [list alphabetically]
The Columbia River Research Laboratory [More info]
Describes the research carried out here, with special emphasis on fish and the people and equipment used to study them.
PDF Understanding beach health throughout the Great Lakes -- Continuing research [More info]
Outlines tactical problems that make it difficult for beach managers to use scientific information to make beach closure and advisory decisions. Explains methodologies we are using to address those problems and better prepare local decision makers.
PDF Assessment of aquatic macroinvertebrate communities in the Autauga Creek watershed, Autauga County, Alabama, 2009 [More info]
Previous analysis showed this area to have reduced macroinvertebrate biodiversity, an important measure of ecosystem health. New observations indicate that conditions have improved; report includes methods and results of sampling.
BioData: a national aquatic bioassessment database [More info]
A web-enabled database that provides for the capture, curation, integration, and delivery of bioassessment data collected by USGS, principally macroinvertebrate, algae, fish, and supporting habitat data from rivers and streams.
Ecological National Synthesis Project [More info]
National-scale perspective and assessments on aquatic ecology, and the chemical and physical factors that affect aquatic conditions and health.
PDF February 2012 workshop jumpstarts the Mekong Fish Monitoring Network [More info]
An international workshop helps to begin collaboration on fish monitoring in southeast Asia.
Invasive Species Program -- Snakeheads, aquatic invaders [More info]
Snakeheads, aggressive airbreathing freshwater fishes that are not native to North America, are considered injurious to certain native North American fish and other aquatic wildlife.
PDF Understanding pesticides in California's Delta [More info]
The Sacramento-San Joaquin River Delta is the hub of California's water system and an important habitat for fish and wildlife. USGS research has provided resource managers and other stakeholders with a good understanding of how pesticides enter the Delta.
Upper Midwest Environmental Science Center (UMESC) [More info]
Homepage for Upper Midwest Environmental Science Center, LaCrosse, Wisconsin, with links to data library, geographical search, science programs, partnerships, long-term resource monitoring program, reports and publications, and education.
Water resources of Michigan - programs and projects [More info]
Brief descriptions of categories of USGS research programs and projects on water resources in Michigan with links to more detailed information on projects.
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