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NatureServe Conservation Status Assessments: Factors for Evaluating Species and Ecosystem Risk
NatureServe

To assess the conservation status of species and ecosystems—specifically the extinction risk of species and elimination risk of ecosystems at global scales, and their extirpation risk at national and subnational (e.g., state, province, territory) scales—using standard methods. NatureServe and its member programs and collaborators use a suite of factors to assess the conservation status of species of plants, animals, and fungi, as well as ecosystems (ecological communities and systems). This document provides an overview of each of the status factors used in conservation status assessments.

This 2012 revision to NatureServe conservation status builds on the 2009 version.

Citation
Master L, Faber-Langendoen D, Bittman R, Hammerson GA, Heidel B, Ramsay L, Snow K, Teucher A, and Tomaino A. 2012. NatureServe Conservation Status Assessments: Factors for Evaluating Species and Ecosystem Risk. NatureServe, Arlington, VA.