Columbia Plateau Climate-Gradient Corridor Analysis Addendum

Sep 26, 2014
Uploaded by Jen Watkins
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Description:
This dataset is an addendum to the Washington Connected Landscapes Project: Columbia Plateau Climate-Gradient Corridor Analysis. It includes supplemental layers that can help prioritize and implement connectivity conservation actions that may benefit species under climate change. The analyses presented in the addendum build upon the climate-gradient corridors modeled for the Columbia Plateau Ecoregion and a surrounding buffer area.

The supplemental products depict linkage pinch-points and barriers and restoration opportunities for climate-gradient corridors in the Columbia Plateau. We emphasize that we do not provide a full interpretation or prioritization of these products, and our results have not been verified by field studies.
Data Provided By:
Meade Krosby (lead; University of Washington), Darren Kavanagh (University of Washington), Guillaume Mauger (University of Washington), Brad McRae (The Nature Conservancy), John Pierce (Washington Department of Fish & Wildlife), and Peter Singleton (USFS Pacific Northwest Research Station).
Content date:
19700101, 20001231, 20140919, 20140919
Citation:
Washington Wildlife Habitat Connectivity Working Group (WHCWG). 2014. Columbia Plateau Climate-Gradient Corridor Analysis Addendum: Pinch-Points and Barriers and Restoration Opportunities. Washington’s Department of Fish and Wildlife, and Department of Transportation, Olympia, WA.
Contact Organization:
Washington Wildlife Habitat Connectivity Working Group (WHCWG)
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DATA BACKGROUND: The Washington Wildlife Habitat Connectivity Working Group (WHCWG) produced these data which represent a regional analysis that portrays conditions at a regional scale. Applying these data at finer, more local scales is likely to increase uncertainty in terms of accuracy and applicability for local land use decisions. However, for the scale at which they were developed, these products are state-of-the-art, peer-reviewed representations of landscape variables and connected habitat networks. The WHCWG expended great effort to compile the best GIS data within constraints imposed by data development costs, available compilation sources, and available staff resources. Inherent in any dataset used to develop graphical representations, are limitations of accuracy as determined by, among others, the source, scale and resolution of the data. The products and data from this analysis convey a wealth of information relevant to conservation of Washington's wildlife and though they represent the state of the art, they rely on imperfect data, knowledge, and assumptions. We strongly suggest that readers thoroughly understand our methods and the limitations of those methods prior to applying our results. SOURCE DATA YEAR: The GIS base layers input to linkage modeling were developed from a wide variety of sources compiled over the years generally from 1999 to 2014. We would like to specify a GIS base layer compilation year for users of the connectivity data; however, the wide range of base layer compilation dates complicates such a specification. For example, land cover / land use, a major base layer, was mapped from Landsat imagery acquired from 1999 to 2003. This layer was subsequently modified by the WHCWG Columbia Plateau Ecoregion project using land cover / land use sources as recent as 2010. Likewise, transportation data were primarily obtained from the 2010 Census TIGER roads and housing density data were generated from the 2000 Census dataset. The data user should be aware that some areas experiencing rapid change over the last decade may not be captured in the modeling effort. APPROPRIATE SCALE OF USE: The raw GIS data obtained by the WHCWG Columbia Plateau project were compiled from a wide range of compilation source scales. The GIS data were post-processed at a 30 m x 30 m cell size (except housing density which had a native cell size of 100 m x 100 m). These data were compiled to 90 m x 90 m cell size prior to connectivity modeling. Given the wide ranging source scales and post-processing we do not recommend application of linkage data at scales larger than 1:100,000.
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Tags:
pinch-points, washington, focal species, idaho, pacific northwest, barriers, climate-gradient corridors, wildlife habitat connectivity, columbia plateau ecoregion, usa, oregon
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About the Uploader

Jen Watkins
Conservation Associate with Conservation Northwest

I began working with Conservation Northwest in 2001 as part of the outreach team for The Cascades Conservation Partnership focused on purchasing and protecting the checkerboard lands of Washington's Central Cascades to maintain connectivity between the North and South Cascades. I have continued to...