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Data Extent

Climate Shield Cold-Water Refuge Streams For Native Trout: ArcGIS Online map

Populations of many cold-water species are likely to decline this century with global warming, but declines will vary spatially and some populations will persist even under extreme climate change scenarios. Especially cold habitats could provide important refugia from both future environmental change and invasions by non-native species that prefer warmer waters. The Climate Shield website hosts geospatial data and related information that describes specific locations of cold-water refuge streams for native Cutthroat Trout (Oncorhynchus clarkii) and Bull Trout (Salvelinus confluentus) across the American West. Forecasts about the locations of refugia could enable the protection of key watersheds, inform support among multiple stakeholders, and provide a foundation for planning climate-smart conservation networks that improve the odds of preserving native trout populations through the 21st century.

The Northern Rockies Adaptation Partnership provided a valuable forum that accelerated this work. The Great Northern and North Pacific Landscape Conservation Cooperatives generously funded the NorWeST project, which serves as the foundation for Climate Shield.

The Climate Shield Cutthroat Trout and Bull Trout models were developed from fish surveys conducted at more than 4,500 locations in over 500 streams, as described in the cited peer-reviewed studies and agency reports.

Dataset Info

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
Isaak, Dan
Young, Mike
Nagel, David
Product Type
Spatial / Geographical Coverage Area
POLYGON ((-124.95225392282 48.459344412943, -123.63389454782 48.342640982219, -123.10655079782 48.517595739566, -123.01866017282 49.096432175307, -112.99912892282 48.98119927124, -112.64756642282 44.654088846933, -114.75694142282 42.748111256816, -124.95225392282 42.424561320844, -124.07334767282 46.861214402111))
Spatial / Geographical Coverage Location
Western United States
Temporal Coverage
USDA Forest Service
Contact Name
Parkes-Payne, Sharon
Contact Email
Public Access Level
Preferred Dataset Citation
Isaak, D., Young, M., Nagel, D., Horan, D., Groce, M., & Parkes, S. (2017). Climate Shield bull trout and cutthroat trout population occurrence scenarios for the western U.S. Rocky Mountain Research Station, U.S. Forest Service Data Archive, Fort Collins, CO. DOI: pending.
Primary Article

Isaak, D. J., Young, M. K., Nagel, D. E., Horan, D. L. & Groce, M. C. (2015), The Cold‐Water Climate Shield: delineating refugia for preserving salmonid fishes through the 21st century. Global Change Biology, 21: 2540-2553.

Related Article

Isaak, D. J., & Young, M. K. (2017), Delineating climate refugia for native aquatic species with big crowd-sourced databases. Mountain Views, 11(2): 3-6.

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