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Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — This web resource lists research projects related to detailed studies of fire history and fire ecology in the Sierra Nevada forests, the California shrublands, and the Mojave and Sonoran deserts. Researchers at the Western Ecological Research Center (WERC) are making contributions to this effort through Knowledge, forming the basis for new More...
April 2002 | Publisher: USGS | Science Center: National Wetlands Research Center (NWRC, Lafayette) | Format: URL
www.nwrc.usgs.gov — NWRC scientists use field surveys and historical data to understand the history and ecology of mangroves in the Dry Tortugas. Among other findings, the scientists found that the health and survival of mangoves depend on hurricanes and seabirds.
Publisher: USGS | Science Center: Biological Informatics | Format: URL
biology.usgs.gov — This web page presents samples of genetics and genomics research from the USGS Biological Resources Discipline about the conservation genetics of plants.
Publisher: USGS | Science Center: Northern Rocky Mountain Science Center (NRMSC, Bozeman) | Format: URL
www.nrmsc.usgs.gov — Summary of the efforts between the 1920s and 1970s to control white pine blister rust fungus. Control measures included hand-pulling and using chemical herbicides against plants from the genus Ribes from several national parks.
Publisher: USGS | Science Center: Northern Rocky Mountain Science Center (NRMSC, Bozeman) | Format: URL
www.nrmsc.usgs.gov — This summary describes limber pine habitat, distribution, mortality, and interralationship with bears and squirrels. The extensive damage of blister rust infection is also described, with a table of preliminary data on the status of and effect of blister rust on limber pine (Pinus flexilus) stands sampled.
Publisher: USGS | Science Center: Leetown Science Center (LSC, Kearneysville) | Format: URL
www.lsc.usgs.gov — The purpose of this research is to provide managers with an empirical model of stand vulnerability that can be used to assess the potential risk of hemlock decline due to hemlock wooly adelgid. Secondly, scientists are attempting to determine how avian and aquatic communities associated with hemlock stands are most likely to be impacted. This site More...
Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — After two centuries of rapid development, the floodplain in the Upper Mississippi River System (UMRS) retains 155,000 ha of forest. Most of the existing stands are less than 70 years old. Heavy seeded species, such as oaks and hickories, and pioneer species, such as willow and cottonwood, are not regenerating adequately to sustain their More...
Publisher: USGS | Science Center: Pacific Island Ecosystems Research Center (PIERC, Honolulu) | Format: URL
biology.usgs.gov — The geographical isolation of the Hawaiian Islands has resulted in the evolution of a highly endemic biota: approximately 80 percent of Hawaii's plants, 100 percent of its forest birds, and 67 percent of its arthropods are found nowhere else in the world. But human colonization of the Islands has severely impacted native plant and animal More...
Publisher: USGS | Science Center: Leetown Science Center (LSC, Kearneysville) | Format: URL
www.lsc.usgs.gov — This report documents the results of a 4 year research project to assess and map vegetation communities of Shenandoah National Park. The result of the project is a new map of vegetation distribution in Shenandoah National Park based on U.S. National Vegetation Classification System standards. Additional products include a classification scheme of More...
U.S. Department of the Interior |
U.S. Geological Survey