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: Categories > Topics > Biological and physical processes
Help
Ecological processes
Dynamic biogeochemical interactions that occur among and between biotic and abiotic components of the biosphere.
Subtopics:
Algal blooms (3 items)
Bioaccumulation (5 items)
Biogeochemical cycling (14 items)
Biological productivity (1 items)
Contaminant transport (25 items)
Dispersal (organisms) (2 items)
Ecological competition (2 items)
Ecosystem functions (16 items)
Eutrophication (6 items)
Extinction and extirpation (3 items)
Habitat alteration (13 items)
Migration (organisms) (4 items)
Pollination (3 items)
Succession (biological) (1 items)
Transpiration (3 items)
Related topics:


Results 21 - 30 of 100 listed alphabetically [list by similarity]
Determinants of breeding distributions of ducks [More info]
Article from Wildlife Monographs no. 100 (1988) on the relationships of wetland habitat dynamics and life history to the breeding distributions of the various species of ducks with information on research methods and references.
PDF Effects of brush management on the hydrologic budget and water quality in and adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001--10 [More info]
Comparison of water in two adjacent watersheds before and after implementing a brush management strategy in one of the watersheds helps us see what water resource characteristics are sensitive to brush management and how.
Endocrine Disruption Found in Fish Exposed to Municipal Wastewater [More info]
Research findings and examples of application to real problems--cause and potential effects of wastewater on fish in streams is explored.
Everglades Depth Estimation Network (EDEN) for support of biological and ecological assessments [More info]
Integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current on-line water-depth information for the entire freshwater portion of the Greater Everglades.
Fire ecology research [More info]
Study of wildland fire history and fire ecology such as plants in the Sierra Nevada forests, California shrublands, the Mojave, and Sonoran deserts to develop management techniques that will reduce hazards.
Fish passage through dams in large temperate floodplain rivers: an annotated bibliography [More info]
Report describes an electronic database of annotated citations relevant to fish passage through dams. Document may be searched using the search form or downloaded as an Endnote, Microsoft Word, or WordPerfect
Flagstaff Field Center [More info]
Homepage for the Flagstaff Field center with links to space science, water and ice studies, earth sciences, biological resources, Grand Canyon Monitoring and Research Center, outreach & education, data and software, and images.
Flying by Night: USGS Scientists Put Technology to Work on Bats [More info]
Short description of techniques used to monitor migration patterns and behavior of bats in New Mexico.
PDF Forecasting the effects of land-use and climate change on wildlife communities and habitats in the lower Mississippi Valley [More info]
Describes the analytical process by which spatial scientific information contributes to forecasts and models in support of regional and local decision-making.
Genetics and molecular tools [More info]
Describes the value of molecular biology genetic tools in enhancing the delineation of the genetic diversity and the effects of environmental degradation on living species. Links to research, which differentiated two species of sage-grouse.
Result pages:Previous 1 2 3 4 5 6 7 8 ... NextAll
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=310&b=20&n=10&order=alpha
Page Contact Information: Ask USGS