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Multiple hysteretic patterns from elementary population models

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Abstract

Critical transitions whereby small changes in conditions can cause large and irreversible changes in ecosystem states are a cause of increasing concern in ecology. Here, we focus on the irreversibility of these transitions, formally known as hysteresis. We explore how simple correlations between parameters in Lotka-Volterra predator-prey equations result in a variety of complicated hysteretic patterns. These patterns include “unattainable” stable states that once lost may never be recovered. We suspect these patterns to be common in natural systems, where interactions between diverse assemblages are unavoidable. Thus, understanding underlying hysteretic structures may be necessary for rescuing lost ecosystem states and avoiding future losses.

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Acknowledgements

We would like to thank Gyuri Barabas for the help with numerical approximations of critical transition points.

Funding

This study was funded by the Ecology and Evolutionary Biology Department and the Rackham Graduate School at the University of Michigan.

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Correspondence to Theresa Wei Ying Ong.

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Ong, T.W.Y., Vandermeer, J. Multiple hysteretic patterns from elementary population models. Theor Ecol 11, 433–439 (2018). https://doi.org/10.1007/s12080-018-0376-1

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  • DOI: https://doi.org/10.1007/s12080-018-0376-1

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