Roger Sayre
Science and Products
Global Ecosystems Continental Data
A standardized, sequential, physical stratification of the earth into a set of unique physical environments with their associated biota is the basis of the geospatial ecosystems methodology. This approach is framed on the understanding that the biodiversity that occurs in any area is largely the result of a biotic response to physical environmental potential and local dynamic processes, and...
Global Ecosystems Data
The fundamental approach undertaken for the global mapping effort was to stratify the Earth into physically distinct areas with their associated land cover. The approach is ecophysiographic in that it emphasizes both ecological (e.g. bioclimates and land cover) and physiographic (e.g. landform and lithology) properties of landscapes. This ecophysiographic concept also demonstrates that when...
Global Ecosystems
The Earth contains an astonishing variety of terrestrial, freshwater, and marine ecosystems, which provide biological resources and services that are essential to our survival. A high resolution, data-derived, global ecosystems map will improve our ability to manage, conserve, and restore ecosystems that are increasingly threatened by fragmentation, alteration, loss, invasive species, fire,...