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The emergence of the rescue effect from explicit within- and between-patch dynamics in a metapopulation

View ORCID ProfileAnders Eriksson, Federico Elías-Wolff, Bernhard Mehlig, Andrea Manica
doi: https://doi.org/10.1101/001842
Anders Eriksson
1 University of Cambridge;
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Federico Elías-Wolff
2 University of Gothenburg
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Bernhard Mehlig
2 University of Gothenburg
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Andrea Manica
1 University of Cambridge;
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Abstract

Immigration can rescue local populations from extinction, helping to stabilise a metapopulation. Local population dynamics is important for determining the strength of this rescue effect, but the mechanistic link between local demographic parameters and the rescue effect at the metapopulation level has received very little attention by modellers. We develop an analytical framework that allows us to describe the emergence of the rescue effect from interacting local stochastic dynamics. We show this framework to be applicable to a wide range of spatial scales, providing a powerful and convenient alternative to individual-based models for making predictions concerning the fate of metapopulations. We show that the rescue effect plays an important role in minimising the increase in local extinction probability associated with high demographic stochasticity, but its role is more limited in the case of high local environmental stochasticity of recruitment or survival. While most models postulate the rescue effect, our framework provides an explicit mechanistic link between local dynamics and the emergence of the rescue effect, and more generally the stability of the whole metapopulation. Now published as: Proceedings of the Royal Society B, 2014, 281(1780):20133127 doi:10.1098/rspb.2013.3127

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted March 05, 2014.

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The emergence of the rescue effect from explicit within- and between-patch dynamics in a metapopulation
Anders Eriksson, Federico Elías-Wolff, Bernhard Mehlig, Andrea Manica
bioRxiv 001842; doi: https://doi.org/10.1101/001842
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The emergence of the rescue effect from explicit within- and between-patch dynamics in a metapopulation
Anders Eriksson, Federico Elías-Wolff, Bernhard Mehlig, Andrea Manica
bioRxiv 001842; doi: https://doi.org/10.1101/001842

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