Evolutionary Significant Unit Boundaries, Steelhead Trout: Russian River, California, 2002

Description:

This line shapefile of evolutionary significant unit (ESU) boundaries was compiled from various sources based on written descriptions in National Marine Fisheries Service (NMFS) status reviews (available upon request) and mapping provided by NMFS. An Evolutionary significant unit, or ESU, of Pacific salmon is considered to be a "distinct population segment" and thus a "species" under the Endangered Species Act. Initial boundaries were derived from USGS 1:250,000 scale hydrologic unit boundaries. Drainage basin delineation from blockages was based on 1:100,000 stream hydrography and/or and available digital topography(1:250,000). Species do not necessarily inhabit all drainages or river reaches depicted. This dataset includes evolutionary significant unit (ESU) boundaries depicting major basins within the current known range of each ESU, and were modified based on migration blockages and known fish distribution. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

Resource Link:

https://purl.stanford.edu/jg504gg7016

Identifier:

https://purl.stanford.edu/jg504gg7016

Language:

eng

Creator:

Circuit Rider Productions

Publisher:

Circuit Rider Productions

Provider:

Stanford

Resource Class:

Datasets

Resource Type:

Line data

Subject:

Steelhead (Fish), Environment, and Inland Waters

Theme:

Environment and Inland Waters

Date Issued:

2002

Spatial Coverage:

Sonoma County (Calif.), Mendocino County (Calif.), and Russian River Watershed (Calif.)

Rights:

These data are licensed by Stanford Libraries and are available to Stanford University affiliates only. Affiliates are limited to current faculty, staff and students. Non affiliates seeking access should contact the publisher directly. These data may not be reproduced or used for any purpose without permission.

Rights Holder:

Copyright ownership resides with the originator.

Access Rights:

Restricted

Format:

Shapefile

Georeferenced:

false