Percent surface smoothness used in modeling habitat of the desert tortoise (Gopherus agassizii) in the Mojave and parts of the Sonoran Deserts of California, Nevada, Utah, and Arizona, USA

Apr 15, 2011
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Percent smoothness. First, Surface roughness was calculated at a 30-m cell size using the method specified by Hobson (1972). Average surface roughness was calculated as the average value of surface roughness in each 1-km2 grid cell. Percent smooth. Percentage of each 1-km2 cell that was "smooth" and "rough" was assessed by measuring the proportion of 30-m average roughness grid cells that were < 1.01 (threshold for smooth). Derived from 30m NED DEM.
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United States Geological Survey Western Ecological Research Center
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Citation:
Nussear, K.E., Esque, T.C., Inman, R.D., Gass, Leila, Thomas, K.A., Wallace, C.S.A., Blainey, J.B., Miller, D.M., and Webb, R.H., 2009, Modeling habitat of the desert tortoise (Gopherus agassizii) in the Mojave and parts of the Sonoran Deserts of California, Nevada, Utah, and Arizona: U.S. Geological Survey Open-File Report 2009-1102, 18 p.
               http://pubs.usgs.gov/of/2009/1102/
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Acknowledgment of the U.S. Geological Survey, Western Ecological Research Center would be appreciated in products derived from these data. Please use citation below.
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Tags:
mojave, smoothness, tortoise, maxent, model, california
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Conservation Biology Institute

The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.