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dunham_probability_updated_020416 (Map Service)


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Current Version: 10.81

Service Description: This GIS dataset is the primary data product produced for the NW Climate Science Center-funded project, "Rangewide climate vulnerability assessment for threatened Bull Trout" (FRESC Study ID 851). We used predictions of temperatures in streams across approximately two-thirds of the species' range in the U.S. to map coldwater streams or “patches” suitable for spawning and early rearing of Bull Trout. Each patch consists of streams with contiguous reaches of cold water. Patches were delineated using medium resolution National Hydrography Dataset streams containing modeled temperatures available at 1 km intervals, as provided by the NorWeST project. Once the patches were delineated, various watershed metrics were generated for each patch to provide covariates for occupancy models that were used to estimate the probability of presence of Bull Trout. Watershed metrics included climatic and/or local factors hypothesized to influence Bull Trout, such as patch size, connectivity to other patches, migratory habitat size, brook trout presence, lake trout presence, human influence, road density, prevalence of very cold water, winter high flow events, and wildfire.

This item relates to a research project funded by the US Geological Survey Climate Adaptation Science Center. Items found on ArcGIS Online are for educational purposes only. Information on the project and the data relating to this item can be found here. Contact the project investigators for more information.


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Layers: Tables: Description: This GIS dataset is the primary data product produced for the NW Climate Science Center-funded project, "Rangewide climate vulnerability assessment for threatened Bull Trout" (FRESC Study ID 851). We used predictions of temperatures in streams across approximately two-thirds of the species' range in the U.S. to map coldwater streams or “patches” suitable for spawning and early rearing of Bull Trout. Each patch consists of streams with contiguous reaches of cold water. Patches were delineated using medium resolution National Hydrography Dataset streams containing modeled temperatures available at 1 km intervals, as provided by the NorWeST project. Once the patches were delineated, various watershed metrics were generated for each patch to provide covariates for occupancy models that were used to estimate the probability of presence of Bull Trout. Watershed metrics included climatic and/or local factors hypothesized to influence Bull Trout, such as patch size, connectivity to other patches, migratory habitat size, brook trout presence, lake trout presence, human influence, road density, prevalence of very cold water, winter high flow events, and wildfire.

This item relates to a research project funded by the US Geological Survey Climate Adaptation Science Center. Items found on ArcGIS Online are for educational purposes only. Information on the project and the data relating to this item can be found here. Contact the project investigators for more information.


Copyright Text: David Hockman-Wert, Jason Dunham, Nathan Chelgren, Michael Heck, USGS

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly

Tile Info:
Initial Extent:
Full Extent:
Min Scale: 5.91657527591555E8
Max Scale: 577790.554289

Min LOD: 0
Max LOD: 10

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info: