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Ecological Drainage Units
Dec 2, 2013
(Last modified Jan 9, 2014)
Uploaded by
2C1Forest
- Description:
- Ecological Drainage Units (EDUs) group watersheds that share a common zoogeographic history, physiographic and climatic characteristics, and therefore likely have a distinct set of freshwater assemblages and habitats. EDUs are hypothesized to account for the variability within fish zoogeographic sub-regions due to finer-scale drainage basin boundaries and physiography. EDUs are delineated as groups of 8-digit US Geological Survey Hydrologic Unit watersheds. EDUS were qualitatively defined by the TNC Freshwater Initiative using primarily USFS Fish Zoogeographic Subregions, USFS Ecoregions and Subsections, and major drainage divisions.
- Data Provided By:
- The Nature Conservancy (TNC) Eastern Conservation Science, The Nature Conservancy (TNC) Freshwater Initiative Program
- Content date:
- not specified
- Citation:
-
http://conserveonline.org/workspaces/ecs/napaj/nap
Copyright © 2005 The Nature Conservancy. All rights reserved.
- Contact Organization:
- The Nature Conservancy, Eastern Conservation Science Support Program
- Contact Person(s):
- not specified
- Use Constraints:
- The Nature Conservancy (TNC) created this data set from the manipulation, analysis, and/or synthesis of publicly available data sources. TNC allows copying and distribution of this data set. Commercial use of this data set is prohibited. This data set must be cited on all electronic and hard copy products using the language of the Data Set Credit.
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FGDC Standard Metadata XML
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About the Uploader
2C1Forest
with Two Countries, One Forest
A Canadian-U.S. collaborative of conservation organizations, researchers, foundations and conservation-minded individuals. Our international community is focused on the protection, conservation and restoration of forests and natural heritage from New York to Nova Scotia, across the Northern...
