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    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-23-II-25.
    Publication Series: Other
    Station: Rocky Mountain Research Station
    PDF: View PDF  (292.49 KB)

    Description

    This indicator provides information on the number and status of forest-associated species at risk or in serious decline. It accomplishes this by monitoring the number of native species that have been identified by conservation science or mandate to be at risk of global extinction. As the number of species considered to be rare increases, the likelihood of species extinction also increases. Demographic and environmental events such as failure to find a mate, disease, disturbance, habitat loss, and climate change interact to increase extinction risk as populations become smaller. Because important ecosystem functions (e.g., productivity, nutrient cycling, or resilience) can be degraded with the loss of species, concern exists that the goods and services humans derive from ecological systems will become diminished as more species become rare. For this reason, tracking the number and percent of at-risk species is a measure of the health of forest ecosystems and their ability to support species diversity.

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    Citation

    Flather, C. H.; Knowles, M. S; Sieg, C. H. 2011. Indicator 1.05: Number and status of native forest-associated species at risk, as determined by legislation or scientific assessment. In: National report on sustainable forests - 2010. FS-979. Washington, DC: U.S. Department of Agriculture, Forest Service: II-23-II-25.

    Keywords

    native forest-associated species, at-risk, decline, extinction, monitoring

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