- Home
- About S&T
- Taxa/Organisms
- Ecosystems
- Issues
- Methods & Tools
- Reports & Publications
- Location
- Search
Publisher: USGS | Science Center: Columbia Environmental Research Center (CERC, Columbia) | Format: URL
www.cerc.usgs.gov — This research project focuses on the endemic nature of the Pallid sturgeon (Scaphirhynchus albus) and shovelnose sturgeon (Scaphirhynchus platorynchus) and their reproductive status. Its objectives are to develop methods to use endoscopy and ultrasonic imagery to visually observe the gonads of adult and immature shovelnose and pallid sturgeon, as More...
Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — USGS researchers are investigating the potential behavioral impacts of fertility control treatments as well as population dynamics and demographics in wild horse herds. Largely unchecked by natural predators, wild horse populations grow at rates of 18-25 percent per year. The Bureau of Land Management (BLM) is mandated by law to manage these More...
Publisher: USGS | Science Center: Northern Prairie Wildlife Research Center (NPWRC, Jamestown) | Format: URL
www.npwrc.usgs.gov — This research project evaluates the effects of prescribed fire on the biological control of an invasive species, leafy spurge (Euphorbia esula). This project evaluates the effect of prerelease burning on establishment of flea beetle (Aphthona nigriscutis) colonies and the ability of established colonies to survive prescribed fire.
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...
2007 | Publisher: USGS | Format: URL
pubs.usgs.gov — The Southwestern Willow Flycatcher (Empidonax traillii extimus) is an endangered bird that breeds only in dense riparian habitats in six southwestern states (southern California, extreme southern Nevada, southern Utah, southwestern Colorado, Arizona, and New Mexico). This report synthesizes information on all known Southwestern Willow Flycatcher More...
September 2006 | Publisher: USGS | Format: URL
pubs.usgs.gov — This report documents the spatial trends in the concentrations of accumulative contaminants and assesses the contaminant effects on the fish from the Colorado River Basin.
2006 | Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — Although the monitoring of black-footed ferret (Mustela nigripes) populations following reintroductions has not been haphazard, several ferret recovery groups since 1994 have recommended development of uniform standards prescribing minimum methods, intensities, and frequencies of monitoring that would provide data on population size, mortality More...
February 2004 | Publisher: USGS (Amphibian Research and Monitoring Initiative (ARMI)) | Science Center: USGS Other | Format: URL
armi.usgs.gov — At least 13 amphibian species are found on the Colorado Plateau, although some have very limited distributions in this bioregion. Amphibian declines have been documented in many parts of the world, but knowledge of amphibians on the Colorado Plateau is inadequate to determine population status or trends for most species. The U.S. Geological More...
2001 | Publisher: USGS (Earth Surface Processes Team - Central Region) | Science Center: USGS Other | Format: .PDF
esp.cr.usgs.gov — This web resource links to the database and pdf version of the USGS/NOAA North American Packrat Midden Database Data Dictionary. The North American Packrat Midden Database is a joint project developed by the U.S. Geological Survey and the National Oceanic and Atmospheric Administration, with the purpose to provide researchers with access to More...
Publisher: USGS | Science Center: Southwest Biological Science Center (SBSC, Flagstaff) | Format: URL
sbsc.wr.usgs.gov — The Internet Map Server (IMS) visually displays the non-native, invasive plants (weed) occurrences in the current (2003) SWEMP database. An IMS allows you to interactively draw, query, and print maps. The SWEMP IMS was developed from ESRI's ArcIMS presentation product.The Southwest Exotic Plant Information Clearinghouse is a cooperative effort More...
Publisher: USGS | Science Center: Northern Rocky Mountain Science Center (NRMSC, Bozeman) | Format: URL
nrmsc.usgs.gov — This site reflects satellite image mosaics of recent fire years from western Montana and central Idaho. Mosaic PDF versions of maps from 2000, 2003, and 2007 are available, and are intended to assist by providing the location of notable burns for the more significant fire years in western Montana and central Idaho. The aim is also to provide a More...
Publisher: USGS | Science Center: Northern Rocky Mountain Science Center (NRMSC, Bozeman) | Format: .PDF
nrmsc.usgs.gov — This web publication describes the Noninvasive Methods to Monitor Bear Population Trends. The U.S. Geological Survey is beginning a new grizzly bear research project this summer in the Northern Continental Divide Ecosystem (NCDE) of northwestern Montana. This work is based on hair collection and DNA analysis methods similar to those used in the More...
U.S. Department of the Interior |
U.S. Geological Survey