- Ecological regionalization is a form of spatial
classification, where boundaries are drawn around areas
relatively homogeneous in landscape characteristics. In the
delineation of ecological regions, or ecoregions, the process
includes the analysis of ecosystem structure and function.
Ecoregions have been developed at national and state scales
for research and resource management. Stream classification
is another method to order the variability of aquatic
habitats, that spans spatial scales from microhabitat to
valley segment. In this study, ecoregions are developed at
the scale of a large watershed (3000 square kilometers), the
upper Grande Ronde River basin in northeastern Oregon. The
ecoregion framework presented here is proposed to bridge the
gap between stream and ecoregions classification. The
classification at this scale is meant to address issues of
management at local scales: to aid in sample design,
extrapolation of the results of site-specific studies and the
development of best management practices that are predictive
of ecosystem response.
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