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A spatial approach to statistical habitat suitability modeling: The Mt. Graham red squirrel case study.

Multivariate statistical techniques were applied to the development of habitat suitability models for the Mt. Graham red squirrel, an endangered species. A digital map data base and a geographic information system (GIS) were used to support the analysis and provide input for two logistic multiple regression models. Squirrel presence/absence is the dichotomous dependent variable whose probability the models pretend to predict. Independent variables are a set of environmental factors in the first model, and locational variables in the second case, where a logistic trend surface was developed. Bayesian statistics were then used to integrate the models into a combined model. Potential habitat losses resulting from the development of an astronomical observatory were assessed using the environmental model and are found to represent about 3% of currently available habitat.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/184821
Date January 1989
CreatorsPereira, Jose Miguel Oliveira Cardoso.
ContributorsZube, Ervin H., Ittelson, William H., Itami, Robert M., Danil, Terry C., Shaw, William W., Kvamme, Kenneth L.
PublisherThe University of Arizona.
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
Typetext, Dissertation-Reproduction (electronic)
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.

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