USGS: Biology arrow iconStatus & Trends Home arrow iconIssues arrow iconThreatened and Endangered Species+Snakes

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Molecular and phenotypic diversity in Chionactis occipitalis (Western Shovel-nosed Snake), with emphasis on the status of C. o. klauberi (Tucson Shovel-nosed Snake)

2007 | Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: .PDF

www.werc.usgs.gov — The Alameda whipsnake (Masticophis lateralis euryxanthus) is both a federally and state listed endangered species limited to scrub and chaparral habitat within Contra Costa and Alameda Counties, CA. Loss and fragmentation of habitat due to agricultural and urban development over the last 100 years are cited as the main causes of its decline. Based More...

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Giant Garter Snake Habitat Ecosystem Initiative

Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL

www.werc.usgs.gov — Radio transmitters, passively induce transponder (PIT) tags, visual surveys, and other methods and techniques are being evaluated to determine the habitat use and life history characteristics of the giant garter snake (Thamnophis gigas), a species endemic to Central Valley wetlands and federally listed as threatened.

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