You are here: Home
/ Publication Information
Title: Greenback cutthroat trout (Oncorhynchus clarkii stomias): A technical conservation assessment
Author: Young, Michael K.;
Source: Golden, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Region. Online: http://www.fs.fed.us/r2/projects/scp/assessments/
Publication Series: Miscellaneous Publication
Description: Greenback cutthroat trout (Oncorhynchus clarkii stomias) was once presumably distributed throughout the colder waters of the South Platte and Arkansas River basins in Colorado and southeastern Wyoming. Primarily a fluvial species, greenback cutthroat trout may have occupied 10,614 to 13,231 km of streams above 1,800 m in these basins. Nevertheless, the distribution of greenback cutthroat trout has dramatically contracted since the mid-1800's, particularly from lower-elevation sites. Rebounding from a low of two populations occupying a few kilometers of small streams in 1970, populations regarded as greenback cutthroat trout now occupy up to 72 streams and lakes, 23 of which meet criteria for populations to count toward delisting under the Endangered Species Act. The bulk of these populations are found on federal lands, and many in the South Platte River basin are in Rocky Mountain National Park. Recent genetic evaluations, however, indicate that many populations considered historical remnants of greenback cutthroat trout may be Colorado River cutthroat trout. Individuals of both taxa were often mixed to develop recovery broodstocks, so the number of non-introgressed wild populations of greenback cutthroat trout is uncertain.
Keywords: greenback cutthroat trout, Oncorhynchus clarkii stomias
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)
XML: View XML
Young, Michael K. 2009. Greenback cutthroat trout (Oncorhynchus clarkii stomias): A technical conservation assessment. Golden, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Region. Online: http://www.fs.fed.us/r2/projects/scp/assessments/
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility