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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...
Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — This web resource is a compilation of research projects related to Energy, Land Use, and Sagebrush Ecosystems. Investigators at the USGS Science Centers (FORT and FRESC), and Central Regional Office have brought biological and ecosystem research and mapping expertise to a partnership with the Bureau of Land Management, Wyoming Game and Fish More...
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
sagemap.wr.usgs.gov — SAGEMAP - Spatial Data for Sage Grouse and Shrubsteppe Systems is needed for research and management of sage grouse and sagebrush steppe habitats in the western United States. This website is a product of the NBII Great Basin Information Project. Find out more from this resource on sage grouse as endangered species, habitat information, More...
March 2009 | Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: .PDF
www.werc.usgs.gov — Fire occurs in many North American ecosystems, and most of these systems are resilient to fires that occur within a broad range of variability in frequency and intensity. In a recent USFS publication (General Technical Report PNW-GTR-779, ), USGS scientist Jon Keeley led a team of scientists from various agencies and academic institutions in More...
November 2007 | Publisher: Academic Institution (Sage-grouse Restoration Project (SGRP), Utah State University) | Format: .PDF
sgrp.usu.edu — The greater sage-grouse (Centrocercus urophasianus) and the Gunnison sage-grouse (C. minimus) are species of concern because of their population declines and shrinking geographic distributions. Of continuing interest is the question of population abundance and trends. This publication answers the questions that deal with sage-grouse population, More...
July 2007 | Publisher: Other (Ecological Society of America (ESA) Journal) | Format: URL
www.esajournals.org — Periodic wildfire maintains the integrity and species composition of many ecosystems, including the Mediterranean-climate shrublands of California. However, human activities alter natural fire regimes, which can lead to cascading ecological effects. Increased human ignitions at the wildland-urban interface (WUI) have recently gained attention, but More...
1999 | Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — A quasi-experimental situation exists in Rocky Mountain National Park, where elk (Cervus elaphus) populations have increased 3-fold since 1968 following their release from artificial controls within the park. Increases in elk habitat use and decreases in deer habitat use were observed. Significant increases in cover of mosses and lichens occurred More...
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: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — This web resource addresses the positive relationship between cheatgrass (Bromus tectorum) and fire frequency as a major concern for land managers in semi-arid shrublands throughout western North America, particularly in Great Basin sagebrush steppe. Management tools are needed to break this cycle, and in this project we will evaluate the use of More...
Publisher: USGS | Science Center: Alaska Science Center (ASC, Anchorage) | Format: URL
alaska.usgs.gov — This project explores and compares the utility of several remote sensors for mapping height and density characteristics of forests and shrubs in Alaska's arctic tundra and boreal forest at a moderate spatial resolution (250 m). This project aims to explore two key questions: (1) at a moderate spatial resolution (250 m), which sensor is most 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...
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...
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U.S. Geological Survey