USGS: Science Topics: population and community ecology

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Population and community ecology

Interactions of a single species (population) or an association of different species (community) occupying a particular region, including their biotic and abiotic environments.

Subtopics:
Animal behavior (27 items)
Biodiversity (26 items)
Biogeography (73 items)
Community ecology (13 items)
Ecosystems (264 items)
Habitats (30 items)
Population dynamics (35 items)
Phenology (11 items)
Symbiosis (1 items)

Radar ecology (2 items)

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Results 11 - 20 of 381 listed alphabetically [list by similarity]

Amphibians & reptiles of the southeastern United States and the U.S. Virgin Islands [More info]: Links to information on species of frogs, toads, and salamanders located in the southeastern United States and the U.S. Virgin Islands, with information on appearance, habitats, calls, and status, plus photos, glossary, and provisional data.
An experiment to control nonnative fish in the Colorado River, Grand Canyon, Arizona [More info]: We removed non-native fish from a section of the river and the endangered native species humpback chub increased in abundance. But it is not yet clear that decreased competition explains the rebound in population.
An online database for IHN virus in Pacific Salmonid fish: MEAP-IHNV [More info]: Background information and genetic sequencing data for more than 1,000 individual field isolates of the fish virus Infectious Hematopoietic Necrosis Virus (IHNV) collected in western North America from 1966 to the present, updated annually.
Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine [More info]: Wildlife you see in a national park or other reserved area don't know about the park boundary. Bobcat, martens, mink, and moose need different types of living space and habitat. Development outside the park affects their ability to inhabit the park.
Apoidea -- Bees and Sphecid Wasps [More info]: Guide to the identification, biology, and ecology of bees and sphecid wasps, mostly in eastern North America.
Application of environmental DNA for inventory and monitoring of aquatic species [More info]: Using genetic analysis of organic material found in aquatic environments it is possible to detect the presence of organisms without necessarily observing or capturing individuals. Explains terms, methods, and prospective utility of this approach.
Aquatic Ecology Branch, Leetown Science Center [More info]: Programs of the Aquatic Ecology Branch on landscape ecology and GIS, molecular genetics, environmental contaminants, stream ecology, and other aspects of aquatic ecology in eastern United States.
Arctic Refuge coastal plain terrestrial wildlife research summaries [More info]: Updated summaries of research in the Arctic National Wildlife Refuge, Alaska, on caribou, muskoxen, predators (grizzly bears, wolves, golden eagles), polar bears, snow geese and their wildlife habitats with maps of land-cover and vegetation.
Assessing rangelands [More info]: Fact sheet in Adobe PDF on assessing the health of rangeland by monitoring and inventory which can help land managers
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.

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