Abstract

A GAP Analysis to study the distribution of Squirrels in California.

Method

In performing the GAP analysis, the first step is to join the Vert file to the landcover file. The Vert file contains a suitbaility analysis for each species in california. The selected squirrel species were taken from this file provided by UCSB. The suitability data gives a range from 1 to 5 for each landcover region of California. 1 is the least suitable, whereas 5 is the most suitable.

All of the polygons that achieved 5 for each species were queried and then exported to create new range layers that demonstrated the most suitable areas for squirrels.

These maps demonstrate that selection



We can see a spatial difference between species of squirrels living in the southern inland portion of California, and the Northern Coastal-Sierra species. This brings us to the conclusion that this process will affected by this spatial distribution. In dividing the species up based on location the ratio of squirrels was 7 species to 3.

These 7 species will now be qualified for the GAP analysis. These species include: Golden Mounted Ground Squirrel, Douglas" Squirrel, Northern Flying Squirrel, Western Gray Squirrel, California Ground Squirrel, Belding's Ground Squirrel, and Townsend's Ground Squirrel.

The next map illustrates the tool

No comments:

Post a Comment