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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 (132 items)
Terrestrial ecosystems (100 items)
Wetland ecosystems (34 items)
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Results 121 - 130 of 268 listed by similarity [list alphabetically]
Geospatial Multi-Agency Coordination (GeoMAC) wildland fire support [More info]
Description of the Geospatial Multi-Agency Coordination (GeoMAC) project, online maps of current wildland fire locations using Netscape Communicator or Microsoft Internet Explorer, and user guide on how to use mapping application.
Great Lakes Science Center [More info]
Site for Great Lakes Science Center, Ann Arbor, which provides information about biological resources in the Great Lakes Basin. Links to personnel, publications, data, library, facilities, research vessels, Great Lakes issues, and research.
Grizzly bear and black bear ecology [More info]
Summaries of research projects on black bear and grizzly ecology and ecosystems supporting the populations and bibliography of related publications.
Gulf of Mexico Estuaries Integrated Science Strategy [More info]
A white paper describing a plan for USGS research in Gulf of Mexico estuaries, developed in 2001 using Tampa Bay as an example with links to program strategy and design.
Gulf of Mexico Integrated Science [More info]
Website of the Gulf of Mexico Integrated Science program to understand the framework and processes of the Gulf of Mexico using Tampa Bay as a pilot study. Links to publications, digital library, water chemistry maps, epiphytes, and field trips.
History and ecology of mangroves in the Dry Tortugas [More info]
Fact sheet on the historic and current conditions of mangroves of Dry Tortugas National Park, a cluster of islands and coral reefs west of Key West, Florida. Mangroves and nesting frigate bird colonies are at risk to destruction by hurricanes.
Hudson River salt front data [More info]
Tide stage, specific conductance, water temperature, and freshwater inflow at selected Hudson River (New York) gages updated every 4-hours to measure the effects of freshwater withdrawals and upstream movement of the salt front.
Hurricane and extreme storm impact studies: coastal and nearshore mapping with scanning airborne laser (LIDAR) [More info]
Airborne scanning laser surveys (LIDAR) are used to obtaining data to investigate the magnitude and causes of coastal changes that occur during severe storms. Links to examples of coastal mapping during specific hurricanes.
Hurricane Katrina disaster: general information and USGS response [More info]
Observations and effects of hurricane Katrina, with information about USGS monitoring and studies related to the area affected.
Hypoxia [More info]
A brief definition and explanation of hypoxia with special reference to the Gulf of Mexico hypoxic zone along the Louisiana-Texas coast as well as extensive links to USGS and other related information resources.
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