The contribution of patch topology and demographic parameters to PVA predictions: the case of the European tree frog

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Title
The contribution of patch topology and demographic parameters to PVA predictions: the case of the European tree frog
Journal
Population Ecology
Author(s)
Pellet J., Maze G., Perrin N.
ISSN
1438-3896
Publication state
Published
Issued date
2006
Peer-reviewed
Oui
Volume
48
Number
4
Pages
353-361
Language
english
Notes
Proceedings Paper : International Symposium on Biological Control of Aphids and Coccids
Tsuruoka, JAPAN, SEP 25-29, 2005
Abstract
Population viability analyses (PVA) are increasingly used in metapopulation conservation plans. Two major types of models are commonly used to assess vulnerability and to rank management options: population-based stochastic simulation models (PSM such as RAMAS or VORTEX) and stochastic patch occupancy models (SPOM). While the first set of models relies on explicit intrapatch dynamics and interpatch dispersal to predict population levels in space and time, the latter is based on spatially explicit metapopulation theory where the probability of patch occupation is predicted given the patch area and isolation (patch topology). We applied both approaches to a European tree frog (Hyla arborea) metapopulation in western Switzerland in order to evaluate the concordances of both models and their applications to conservation. Although some quantitative discrepancies appeared in terms of network occupancy and equilibrium population size, the two approaches were largely concordant regarding the ranking of patch values and sensitivities to parameters, which is encouraging given the differences in the underlying paradigms and input data.
Keywords
population viability analyses, RAMAS, stochastic patch occupancy models, extinction, colonization, dispersal distance, Hyla arborea, patch occupancy, population size, Switzerland
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24/01/2008 18:54
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20/08/2019 15:20
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