Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): C. H. FlatherM. S KnowlesC. H. Sieg
    Date: 2011
    Source: In: National report on sustainable forests - 2010. FS-979. Washington, DC: U.S. Department of Agriculture, Forest Service: II-27-II-29.
    Publication Series: Other
    Station: Rocky Mountain Research Station
    PDF: View PDF  (414.53 KB)

    Description

    This indicator provides information on the number and distribution of forest-associated species at risk of losing genetic variation across their geographic range. Comparing a species' current geographic distribution with its historic distribution is the basis for identifying those species whose range has contracted significantly. Human activities are accelerating changes in species' distributions through land use conversions, climate change, the alteration of native habitats, the introduction of exotic species, and direct exploitation. The size of a species' distribution is often related to the number of genetically distinct populations that exist. Consequently, species that currently occupy a smaller portion of their former distribution signals a potential lost of their genetic variation. This erosion in genetic variation makes species less able to adapt to environmental change, increases the risk of extinction, and lowers the overall resilience of forest ecosystems.

    Publication Notes

    • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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.

    Citation

    Flather, C. H.; Knowles, M. S; Sieg, C. H. 2011. Indicator 1.07. Number and geographic distribution of forest-associated species at risk of losing genetic variation and locally adapted genotypes. In: National report on sustainable forests - 2010. FS-979. Washington, DC: U.S. Department of Agriculture, Forest Service: II-27-II-29.

    Keywords

    indicator, species, at-risk, genetic variation, geographic range

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page