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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 publication is intended to provide a summary of long-range surveillance radar technology and applications of these data to questions about movement patterns of birds and other flying wildlife based on publications that provide more detailed information (Buurma, 1995; Gauthreaux and Belser, 2003a, b; Gauthreaux and others, 2003; Diehl and More...
June 25 2009 | Publisher: USGS | Format: AUDIO
gallery.usgs.gov — This sound recording is an interview with USGS scientist Sam Droege about the tremendous importance of native bees and pollinators in general. The interview was held during the 2009 Pollinator Week.
May 21 2009 | Publisher: USGS | Format: URL
pubs.usgs.gov — A new tool provides land managers with a predictive model for mapping the potential distribution of desert tortoise habitat and to evaluate different land-use issues the tortoises face at a landscape scale. The model incorporates an extensive amount of field data for desert tortoises, as well as environmental data related to landscape attributes, More...
May 2009 | Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — This study encompasses the range of the Mojave population of desert tortoises north and west of the Colorado River, as well as a small portion of the northwest Sonoran Desert, and comprises 336,594 square kilometers of basin-and-range topography, including parts of California, Nevada, Utah, and Arizona. The habitat model provides a basal More...
June 2001 | Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — Salvage of injured, recently dead, ill, and dying desert tortoises is a very important part of recovery programs for these reptiles. Salvaged desert tortoises can provide a wealth of information about such subjects as health, disease, presence of heavy metals and other toxicants, and causes of mortality in populations. When tortoises are salvaged More...
February 25 1999 | Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — This link is to the home page for the Mojave Desert Science Symposium. This historic forum brought together researchers and managers to examine the status of scientific knowledge about the Mojave Desert. The meeting was hosted by the U.S. Geological Survey/Biological Resources Division, Western Ecological Research Center at the University of More...
Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: .PDF
www.werc.usgs.gov — One cause for declines in desert tortoise populations is predation on juveniles by common ravens (Corvus corax), a predatory bird species native to the Mojave Desert. The Recovery Plan for the Desert Tortoise recommended that research be conducted on sources of mortality (including natural predation). This study was implemented to investigate the More...
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — This website is a tool useful for learning about birds. Users can learn about common United States and Canadian Birds through pictures, songs, and using identification tips. The site also links to Central American Birds, with Songs and Photographs of Selected Species that Breed in Central America. Users may also access a frames-based bird More...
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
137.227.242.23 — This website is a map which displays data related to Breeding Bird Species Lists. By clicking on the map, users will be given a species list for the location, with estimated local abundances and links to species information.
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — This web resource presents songs and calls of birds in WAV format. There is basic information and author information for the bird song recordings, along with songlist and call list audio files (long and shortened). The site also links to the Bird Identification InfoCenter, Seasonal Bird Checklists, Bird Identification tips, and the Patuxent Bird More...
Publisher: USGS | Science Center: Southwest Biological Science Center (SBSC, Flagstaff) | Format: URL
sbsc.wr.usgs.gov — The desert tortoise is listed as a threatened species under federal and California versions of the Endangered Species Act. The recovery plan for the desert tortoise recommended that additional data be collected on the reproductive ecology of the species throughout the range. Annual meetings between USGS, Biological Resources Division researchers More...
U.S. Department of the Interior |
U.S. Geological Survey