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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)
Related topics:
Results 51 - 60 of 381 listed alphabetically [list by similarity]
Biological resource status and trends: Tropical forest ecosystems [More info]
Information concerning status and trends of biological resources, focusing on tropical forest ecosystems
Biological resource status and trends: Wetlands [More info]
Information concerning status and trends of biological resources, focusing on wetland ecosystems
Biological resource status and trends: intertidal and coastline ecosystems [More info]
Information concerning status and trends of biological resources, focusing on intertidal and coastline ecosystems
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.
PDF Biological soil crusts: webs of life in the desert [More info]
Fact sheet on the need to protect biological soil crusts in the desert. These crusts are most of the soil surface in deserts not covered by green plants and are inhabited by cyanobacterium (blue-green algae) and other organisms useful to the ecosystem.
Bird Banding Laboratory: the North American Bird Banding Program [More info]
Bird banding is used to study the movement, survival and behavior of birds. The Bird Banding Laboratory Site has links to the value, procedure and history of bird banding, how to report bird bands (English & Spanish), and resources for birders.
Bird Point Count Database [More info]
Perform custom searches for bird count and bird habitat data or enter your bird count and vegetation data.
Bird checklists of the United States [More info]
Geographical access to multiple bird checklists developed by others that indicate the seasonal occurrence of birds in a given area. A Record Documentation Form to document supporting details of rare bird observations is also available.
PDF Born of fire: restoring sagebrush steppe [More info]
USGS Forest and Rangeland Ecosystem Science Center: fact sheet in Adobe PDF about the studies to restore sagebrush steppe
Boston Harbor ecosystems [More info]
This web site is an outgrowth of an agreement between the USGS and the New England Aquarium, designed to summarize and make available results of scientific research. It will also present educational material of interest to wide audiences.
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