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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


Original Data Basin Creation Date
2011-04-15 08:32:58
Original Data Basin Modified Date
2011-04-15 08:36:31


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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  • Data Basin



Data source
United States Geological Survey Western Ecological Research Center<br />
Harvested on Fri May 23 09:39:12 MDT 2014 from Data Basin Service

Additional Information


Type Scheme Key
UniqueKey Data Basin f2994e90141b4e2b884f84e5387fb2fe

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