Abstract: This layer is exported from LG_Chum_Kriging_ClipAlb83 layer from the Conservation Genetics Laboratory, US Fish and Wildlife Service, Anchorage, Alaska. The layer depicts the predicted spatial distribution of the first principle component (PC1), which represents 43% of the total genetic variation in chum salmon across three watersheds (Norton Sound and the Yukon and Kuskokwim rivers) of subarctic North America. The PC1 values were derived for each population from allele frequency data and then extrapolated to the entire area (Norton Sound, and the Yukon and Kuskokwim rivers) using the ordinary kriging function in the Geostatistical Analyst tool in ArcGIS (ESRI) version 9.2. The latitudinal trend in color change suggests variation in genetic diversity occurs mainly along an east - west (or coastal - inland) axis.

Purpose: To assess the spatial pattern of genetic variation in chum salmon from Norton Sound and the Yukon and Kuskokwim rivers and to assess if the spatial patterns of genetic variation in Chinook, chum, and coho salmon are congruent.

Publication Date: October 2009

Originator: USFWS, Conservation Genetics Laboratory, 1011 East Tudor Road, Anchorage, Alaska 99503

Online citation: \\KODIAK\I$\ProjectData\USFWS_CGL\CGL_LG_Data.mdb

Bounding coordinates:
West: -169.887469
East: -123.459309
North: 69.367870
South: 56.914884

Place Keywords: Yukon River, Kuskokwim River, Norton Sound, Alaska, Yukon

Theme Keywords: salmon, genetics, Chinook, Chum, Coho

Projection: NAD_1983_Alaska_Albers

Geographic: GCS_North_American_1983

Attributes of: Chum_Kriging

Metadata date: 20090722