Service Description: Across the western United States, many ungulate herds must migrate seasonally to access resources and avoid harsh winter conditions. Because these corridors traverse vast landscapes (i.e., up to 150 miles), they are increasingly threatened by roads, fencing, subdivisions and other development. Over the last decade, many new tracking studies have been conducted on migratory herds, and analytical methods have been developed that allow for population-level corridors and stopovers to be mapped and prioritized. In 2018, the U.S. Geological Survey assembled a Corridor Mapping Team to provide technical assistance to western states working to map bison, elk, moose, mule deer, and pronghorn corridors using existing GPS data. Based out of the Wyoming Cooperative Fish and Wildlife Research Unit, the team consists of federal scientists, university researchers, and biologists and analysts from participating state agencies.
In its first year, the team has worked to develop a standardized analytical and computational methods and a workflow applicable to data sets typically collected by state agencies. In 2019, the team completed analyses necessary to map corridors, stopovers, and winter ranges in Arizona, Idaho, Nevada, Utah, and Wyoming. A total of 26 corridors, 16 migration routes, 25 stopovers, and 9 winter ranges, were mapped across these states and are included in this project. The Ungulate Migrations of the Western United States report and associated map archive provides the means for corridors to be taken into account by state and federal transportation officials, land and wildlife managers, planners, and other conservationists working to maintain big game corridors in the western states.
Service ItemId: 5d5d3d055c8d46a9b53fb1b98f309b72
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
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Description: Here we provide the GIS/spatial data for Nevada from the publication Ungulate Migrations of the Western United States (Kauffman et al. 2020). This data provides the means for corridors to be taken into account by state and federal transportation officials, land and wildlife managers, planners, and other conservationists working to maintain big game corridors in Nevada.
NDOW has simplified the corridors and dissolved overlapping polygons with the same migration type (high, medium, low, stopover, winter). To download the original and unprocessed layers for each herd, visit Ungulate Migrations of the Western United States, Volume 1 and Volume 2.
Cody Schroeder, Nevada Department of Wildlife
Hall Sawyer, Wildlife Biologist, WEST, Inc.
Julie Garcia, California Department of Fish and Wildlife
Brian Ehler, California Department of Fish and Wildlife
Stacy Anderson, California Department of Fish and Wildlife
Evan Greenspan, California Department of Fish and Wildlife
John Tull, US Fish and Wildlife Service
Don Whittaker, Oregon Department of Wildlife
Spatial Reference: 26911 (26911)
Initial Extent:
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YMin: 3998206.68252874
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Spatial Reference: 26911 (26911)
Full Extent:
XMin: 113329.266765313
YMin: 3893585.4282015
XMax: 855942.645439735
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Spatial Reference: 26911 (26911)
Units: esriMeters
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