ISSN:
1573-5052
Keywords:
Biological organization
;
GIS
;
Isoline maps
;
Latitudinal and longitudinal gradients
;
Remote sensing
;
Scale
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Biodiversity, although recongnized as encompassing several levels of biological organization, is often thought of as species diversity. Three diversity estimates were calculated for the conterminous United States using satellite data acquired from the Advanced Very High Resolution Radiometer (AVHRR): land cover richness, vegetation richness, and vegetation clustering. Vegetation richness and vegetation clustering showed a scale-dependent relationship to elevation across the range of quadrat sizes from 500 to 50,000 mi2. All diversity measures increased east to west, with a rather abrupt transition at the Colorado Front Range. The longitudinal diversity gradients found in this study are in contrast to the reported latitudinal and longitudinal gradients for species diversity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00045592
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