Author | Martin, Julien | |
Author | Nichols, James D. | |
Author | Mcintyre, Carol L. | |
Author | Ferraz, Gonçalo | |
Author | Hines, James E. | |
Access date | 2011-04-13T12:32:39Z | |
Available date | 2011-04-13T12:32:39Z | |
Document date | 2009 | |
Citation | MARTIN, Julien et al. Perturbation analysis for patch occupancy dynamics. Ecology, v. 90, n.1, p.10-16, 2009 | pt_BR |
URI | https://www.arca.fiocruz.br/handle/icict/1905 | |
Language | eng | pt_BR |
Rights | open access | pt_BR |
Title | Perturbation analysis for patch occupancy dynamics | pt_BR |
Type | Article | pt_BR |
Abstract | Perturbation analysis is a powerful tool to study population and community
dynamics. This article describes expressions for sensitivity metrics reflecting changes in
equilibrium occupancy resulting from small changes in the vital rates of patch occupancy
dynamics (i.e., probabilities of local patch colonization and extinction). We illustrate our
approach with a case study of occupancy dynamics of Golden Eagle (Aquila chrysaetos)
nesting territories. Examination of the hypothesis of system equilibrium suggests that the
system satisfies equilibrium conditions. Estimates of vital rates obtained using patch
occupancy models are used to estimate equilibrium patch occupancy of eagles. We then
compute estimates of sensitivity metrics and discuss their implications for eagle population
ecology and management. Finally, we discuss the intuition underlying our sensitivity metrics
and then provide examples of ecological questions that can be addressed using perturbation
analyses. For instance, the sensitivity metrics lead to predictions about the relative importance
of local colonization and local extinction probabilities in influencing equilibrium occupancy
for rare and common species | pt_BR |
Affilliation | University of Florida. Florida Cooperative Fish and Wildlife Research Unit. Gainesville, Florida, USA. | pt_BR |
Affilliation | Patuxent Wildlife Research Center. United States Geological Survey. Maryland, USA. | pt_BR |
Affilliation | National Park Service. Fairbanks, Alaska USA. | pt_BR |
Affilliation | Instituto Nacional de Pesquisas da Amazônia. Manaus, AM, Brazil. | pt_BR |
Affilliation | Patuxent Wildlife Research Center. United States Geological Survey. Maryland, USA. | pt_BR |
Subject | Aquila chrysaetos | pt_BR |
Subject | Denali National Park | pt_BR |
Subject | Alaska | pt_BR |
Subject | Detection probabilities | pt_BR |
Subject | Elasticity | pt_BR |
Subject | Golden | pt_BR |
Subject | Local extinction and colonization probabilities | pt_BR |
Subject | Patch occupancy models | pt_BR |
Subject | Rarity | pt_BR |
Subject | Sensitivity | pt_BR |