Western Gray Squirrel, Least-Cost Corridors, Western WA, 2022

Feb 10, 2024 (Last modified Sep 27, 2024)
Uploaded by jeff azerrad
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Description:

These data were provided by the WWHCWG for use in the Washington Habitat Connectivity Action Plan. This corridor layer for western gray squirrel was generated by the WWGCWG's Cascades to Coast Assessment (WWHCWG 2022). This recently developed corridor habitat (i.e., least cost corridors) layer received thorough review by WDFW's species subject matter experts during its recent development.

Data Provided By:
Washington Wildlife Habitat Connectivity Working Group (WWHCWG)
Content date:
2010-01-01T00:00:00 - 2020-12-31T00:00:00
Citation:
WHCWG. 2022. Washington Connected Landscapes Project: Cascades to Coast Analysis. Washington Department of Fish and Wildlife, and Washington State Department of Transportation, Olympia, WA.
Spatial Resolution:
30 (Meter)
Contact Organization:
Science Applications (Pacific Northwest Region), United States Fish and Wildlife Service
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Use Constraints:
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 appropriate 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, but they rely on inherently 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. The data user should note Section A (Chapter 2), as well as Section C in the WHCWG Cascades to Coast report. See metadata Credits for the report. 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 2010 to 2020. 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 additional details, the data user should note Section A (Chapter 2), particularly Table 3 in the WHCWG Cascades to Coast report. See metadata Credits for the report. APPROPRIATE SCALE OF USE: The raw GIS data obtained by the WHCWG Cascades to Coast 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. 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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Dataset Type:
Layer Package
Tags:
wildlife habitat connectivity, cascades to coast, focal species, western gray squirrel, usa, pacific northwest, washington, sciurus griseus, least-cost corridor
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About the Uploader

jeff azerrad
Environmental Planner with Washington Department of Fish and Wildlife

I work in my agency's program that focuses on ecosystem and landscape conservation. My position entails developing science-based publications that help guide land use planning decisions and particularly decisions made by jurisdictions all across Washington State.