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Resilience in a two-population system: interactions between Allee effects and connectivity

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Abstract

Resilience in ecosystems and resistance to regime shifts has been a major focus in ecological research. How migration and general network dynamics affect the resilience of populations or induce regime shift cascades is a particularly challenging open question in theoretical ecology. We focus on regime shifts in populations with variable-strength Allee effects to demonstrate the effect of migration on resilience in two-population systems with critical transitions. The result is a mathematical model that justifies the assumption that resilience can be averaged across connected populations and suggests several management strategies to either avoid or induce regime shift cascades.

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Authors and Affiliations

  1. Department of Mathematics, University of California, One Shields Avenue, Davis, CA, 95616, USA

    Carter L. Johnson

  2. Department of Environmental Science and Policy, University of California, One Shields Avenue, Davis, CA, 95616, USA

    Alan Hastings

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  1. Carter L. Johnson
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  2. Alan Hastings
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Correspondence to Carter L. Johnson.

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Johnson, C.L., Hastings, A. Resilience in a two-population system: interactions between Allee effects and connectivity. Theor Ecol 11, 281–289 (2018). https://doi.org/10.1007/s12080-018-0365-4

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  • DOI: https://doi.org/10.1007/s12080-018-0365-4

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