| Abstract: | Sensitivity analysis is a useful tool for the study of ecological models that has many potential applications for patch occupancy modeling. Drawing from the rich foundation of existing methods for Markov chain models, I demonstrate new methods for sensitivity analysis of the equilibrium state dynamics of occupancy models. Estimates from three previous studies are used to illustrate the utility of the sensitivity calculations: a joint occupancy model for a prey species, its predators, and habitat used by both; occurrence dynamics from a well-known metapopulation study of three butterfly species; and Golden Eagle occupancy and reproductive dynamics. I show how to deal efficiently with multistate models and how to calculate sensitivities involving derived state variables and lower-level parameters. In addition, I extend methods to incorporate environmental variation by allowing for spatial and temporal variability in transition probabilities. The approach used here is concise and general and can fully account for environmental variability in transition parameters. The methods can be used to improve inferences in occupancy studies by quantifying the effects of underlying parameters, aiding prediction of future system states, and identifying priorities for sampling effort. |
| Genre: | Article |
| ProdID: | 70039007 |
| Citation Author: | Miller, David A. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 1213 |
| Citation Issue: | 5 |
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| Citation Language: | English |
| Citation Larger Work Title: | Ecology |
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| Citation Number Of Pages: | 10 |
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| Citation Phsyical Description: | 10 p. |
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| Citation Publisher: | ESA |
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| Citation Search Results Text: | General methods for sensitivity analysis of equilibrium dynamics in patch occupancy models; 2012; Article; Journal; Ecology; Miller, David A. |
| Citation Start Page: | 1204 |
| Citation Volume: | 93 |
| Citation Year: | 2012 |
| Type: | citation/reference |
| Text: | General methods for sensitivity analysis of equilibrium dynamics in patch occupancy models; 2012; Article; Journal; Ecology; Miller, David A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1890/11-1495.1 |
| Date Other: | Thu, 12 Jul 2012 00:00 -0500 |
| Publisher: | ESA |
