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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 41 - 50 of 102 listed alphabetically [list by similarity]
Identifying sources of fecal coliform bacteria in selected streams on Virginia's Total Maximum Daily Loads (TMDL) priority list [More info]
Describes project to identify sources of fecal coliform bacteria by ribotyping to develop the use of Maximum Daily Load (TMDL) values for contaminated stream segments in Virginia.
Invasive crayfish in the Pacific Northwest [More info]
These organisms have negative effects on local ecosystems, but we don't yet know how extensively they have spread. Here is a key to help people identify them.
Karst Interest Group Proceedings (February 2001) [More info]
Scientific presentations and papers about geologic, geophysical, and hydrologic studies of karst areas in the U.S.
PDF LANDFIRE [More info]
A collection of geospatial data sets intended to support wildfire response and other natural resource planning activities. Includes vegetation, fire regimes, topography, surface disturbance, fuel models, and reference data.
PDF Lead Poisoning in Wild Birds [More info]
Even though lead usage has declined due to environmental awareness and regulation, several human sources of lead continue to affect birds. Hunting ammunition and fishing gear are ingested by the birds, with toxic effects.
Maps of the distribution and occurrence of ground water quality constituents and early 1970's land use in New Jersey [More info]
Links to maps of New Jersey showing nitrate levels, pesticides, Total Volatile Organic Compounds (VOCs), and radium in wells and land use of the 1970s.
Mercury Concentrations in Streams Found to Go Through Daily Cycles [More info]
Research findings and examples of application to real problems--highly variable conditions cause the production of toxic methyl mercury in the environment which accumulates in fish.
Midcontinent Agricultural Chemical Research Program [More info]
Homepage for the research on occurrence, movement, flux, fate, and effects of agricultural chemicals, such as pesticides, in 25 states by the Midcontinent Agricultural Chemical Research Project (MACRP) with links to study results and publications.
Monitoring program for mercury in precipitation in Indiana [More info]
Precipitation-monitoring network for mercury in Indiana.
National assessment of mercury in aquatic ecosystems [More info]
Overview of three research programs including determining levels of mercury at selected sites in water, sediment and fish, mercury emissions into the atmosphere, and mercury cycling in the Everglades National Park, Florida.
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