- Recommended Citation:
- Center for International Earth Science Information Network - CIESIN - Columbia University, and NatureServe. 2008. Gridded Species Distribution, Version 1: Global Amphibians Original Grids. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). http://sedac.ciesin.columbia.edu/data/set/species-v1-global-amphibian-original. Accessed DAY MONTH YEAR.
- Download this Citation:
Please check the Research Note field for issues pertaining to importing authors that are organizations.
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These grids are available in .BIL format and are distributed in two forms:
- "original grids" that include grid values designating the status of occurrence (e.g., 1 = extant, 2 = possibly present, 3 = probably extinct, etc.), and
- "presence grids" that represent the "extant" category of the original grids as a grid value of "1," and all other areas as "0" (see About the Data ).