NatureServe conservation status assessments: methodology for assigning ranks. Revised edition

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The primary goal of this methodology is 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. This 2012 version of the methodology and the associated risk calculator (also 2012) are a modest upgrade to the 2009 version. As with that version, the goal is to foster rank standardization—helping to increase the consistency, objectivity, and transparency of the conservation status assessments; facilitate maintenance of the ranks; promote NatureServe network collaboration; incorporate fields that were added previously to lend robustness to ranking; and provide utility in generating global ranks as well as national and subnational ranks. The revised factor definitions and values are also designed to enhance compatibility with international efforts that assess element risk, including IUCN ranks.

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ELECTRONIC FILE - Zoology: Multiple Species

Suggested citation:
Faber-Langendoen, D., J. Nichols, L. Master, K. Snow, A. Tomaino, R. Bittman, G. Hammerson, B. Heidel, L. Ramsay, A. Teucher, and B. Young. 2012. NatureServe Conservation Status Assessments: Methodology for Assigning Ranks. NatureServe, Arlington, VA.

SWAP (2/19/2016) citation (with additional punctuation, first word of title added, edition added):
Faber–Langendoen D, Nichols J, Master L, Snow K, Tomaino A, Bittman R, Hammerson GA, Heidel B, Ramsay L, Teucher A, et al. 2012. NatureServe conservation status assessments: methodology for assigning ranks. Rev. ed. Arlington (VA): NatureServe; [accessed 2015 May 2]. http://www.natureserve.org/sites/default/files/publications/files/nature....