USGS - science for a changing world

Science Topics

Maps, Imagery, and Publications Hazards Newsroom Education Jobs Partnerships Library About USGS Podcasts/RSS
You are here: Topics > Population and community ecology
Help
Community ecology
Study of the relationships of species that interact in a common area.
Subtopics:
(none)
Related topics:
Results 1 - 13 of 13 listed by similarity [list alphabetically]
PDF 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.
PDF Beyond the Golden Gate--oceanography, geology, biology, and environmental issues in the Gulf of the Farallones [More info]
A geologic and oceanographic study of the waters and Continental Shelf of Gulf of the Farallones adjacent to the San Francisco Bay region. The results of the study provide a scientific basis to evaluate and monitor human impact on the marine environment.
Biological soil crusts [More info]
Explains biological soil crusts, organism-produced soil formations commonly found in semiarid and arid environments, with special reference to their biological composition, physical characteristics, and ecological significance.
Changing Arctic ecosystems-Research to understand and project changes in marine and terrestrial ecosystems of the Arctic [More info]
Three themes of ongoing research: forecasting polar bear and walrus population response to changing marine ecosystems; measuring wildlife population changes in the Arctic coastal plain, and wildlife communities in the boreal-Arctic transition zone.
Coastal habitats in Puget Sound [More info]
Declines in fish and wildlife populations, water-quality issues, and changes in coastal habitats have prompted this USGS study of the region's nearshore life and environment. Includes links to data from published reports.
PDF Estuaries of the Greater Everglades Ecosystem: Laboratories of Long-term Change [More info]
Explains how we reconstruct past environmental conditions, especially salinity, to help guide ecosystem restoration efforts in this area.
Facts About Invasive Bighead and Silver Carps [More info]
Imported from China in the 1970s, these fish thrive in the Mississippi and Missouri river systems and have become undesirable pests, competing with native fish species.
Geographic Analysis and Monitoring Program [More info]
Geographic Analysis and Monitoring Program (GAM) conducts studies about land surface change, environmental and human health, fire and urban ecology, and natural hazards to help decision-makers in land-use planning and land management.
Is science in danger of sanctifying the wolf? [More info]
What does it mean that beneficial trophic cascades (side effects) of wolf population restoration are questioned by recent research?
PDF Prehistoric packrats piled up clues to climate change [More info]
Hoarding behavior preserved prehistoric materials we can use as clues to ancient climate and ecosystem changes.
PDF Southwest Caves Reveal New Forms of Life [More info]
These lightless and nutrient-poor natural systems are home to life forms found nowhere else on Earth. Three new genera and at least 15 new species have been discovered here.
PDF Streamflow characteristics and benthic invertebrate assemblages in streams across the western United States [More info]
Change in streams accompanying land and water use may affect benthic invertebrate assemblage composition and structure through changes in density of invertebrates or taxa richness, the number of different species living in the stream.
Vegetation recovery after fire in the Klamath-Siskiyou region, southern Oregon [More info]
Summarizes studies that took place in this ecoregion. Some studies occurred in areas without post-fire management, and others in moderately or intensively managed areas. Some of the research also occurred immediately after a wildfire, and other work occur
Alphabetical Index of Topics a b c d e f g h i j k l m n o p q r s t u v w x y z

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.usgs.gov/science//science/science.php?term=187&type=theme
Page Contact Information: Ask USGS