Using Presence-Absence Data to Build and Test Spatial Habitat Models for the Fisher in the Klamath Region, U.S.A.
Carroll C, Zielinski WJ, Noss RF. 1999. Using Presence-Absence Data to Build and Test Spatial Habitat Models for the Fisher in the Klamath Region, U.S.A.. Conservation Biology. 13(6):1344-1359
Excerpts from the Abstract: "Forest carnivores such as the fisher (Martes pennanti) have frequently been the target of conservation concern because of their association in some regions with older forests and sensitivity to landscape-level habitat alteration. Although the fisher has been extirpated from most of its former range in the western United States, it is still found in northwestern California. Fisher distribution, however, is still poorly known in most of this region where surveys have not been conducted. To predict fisher distribution across the region, we created a multiple logistic regression model using data from 682 previously surveyed locations and a vegetation layer created from satellite imagery. A moving-window function in a geographic information system was used to derive landscape-level indices of canopy closure, tree size class, and percent conifer. The model was validated with new data from 468 survey locations. The correct classification rate of 78.6% with the new data was similar to that achieved with the original data set (80.4%)."
- Type
- Journal Article
- Authors
- Carroll, Carlos; Zielinski, William; Noss, Reed
- Units
- KLMN , REDW
- Keywords
- Animal Studies, Detection Probability, Distribution, Fisher, Habitat Models, Mammals, Martes pennanti, Wildlife