USGS: Science Topics: ecosystems

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Ecosystems

The interacting populations of plants, animals, and microorganisms occupying a certain area, and their relationship to the environment.

Subtopics:
Aquatic ecosystems (104 items)
Terrestrial ecosystems (88 items)
Wetland ecosystems (25 items)

Related topics:

Results 51 - 60 of 220 listed by similarity [list alphabetically]

Bryophytes and lichens, small but indispensable forest dwellers [New Window]: Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
Buck Island Reef National Monument Sea Turtle Research Program: Sea turtle nesting research & monitoring protocols manual [New Window]: Manual for research program on the nesting habits of sea turtles of the Virgin Islands, with descriptions of species, nesting behavior, observation methods, record keeping, tagging, and tissue sample collection. (PDF file, 121 pp.)
California Information Node (CAIN) [New Window]: California Information NODE (CAIN) of the National Biological Information Infrastructure collects data and information resources critical to the study of California's diverse ecosystems, with an initial emphasis on invasive species issues.
Center for Coastal & Watershed Studies - St. Petersburg/Tampa, Florida [New Window]: Homepage for the Florida Center for Coastal & Watershed Studies in St. Petersburg, Tampa, and the U.S. Virgin Islands with links to a newsletter Sound Waves, research projects by area and topic, publications, data sets, news, and contacts.
Central Southwest/Gulf Coast Information Node (CSWGCIN) [New Window]: Central Southwest/Gulf Coast Information Node (CSWGCIN) of the National Biological Information Infrastructure (NBII) is a gateway to biological information on Arkansas, Louisiana, Oklahoma, Texas, and the Gulf of Mexico Coast.
Characterization of macroalgal epiphytes on Thalassia testudinum in Tampa Bay, Florida [New Window]: Identification of epiphytes (plants obtaining moisture and nutrients from the air and rain and usually living on another plant) on seaweed in Tampa Bay, Florida. Abstract of symposium presentation with photos.
Chesapeake Bay activities [New Window]: Information on USGS studies of Chesapeake Bay, the nation's largest estuary, concerned with water quality, ecosystem history and change, vital habitat and biological resources, and land use studies.
Classification of natural ponds and lakes in the glaciated prairie region [New Window]: Presents a wetland classification system that reflects seasonal, regional, and local variations in the environment.
Classification of wetlands and deepwater habitats of the United States [New Window]: Detailed publication on the classification system for an inventory of wetlands and deepwater habitats of the United States used to describe ecological taxa and arrange them in a system useful to resource managers.
Climate-Driven Ocean Changes Affect Estuaries [New Window]: Research findings and examples of application to real problems--Pacific Ocean cooling triggers phytoplankton blooms in San Francisco Bay.

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