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Evolutionary dynamics and diversification in changing environments
  • Evgeniia Alekseeva,
  • Michael Doebeli,
  • Iaroslav Ispolatov
Evgeniia Alekseeva
Skolkovo Institute of Science and Technology
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Michael Doebeli
University of British Columbia, University of British Columbia
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Iaroslav Ispolatov
Universidad de Santiago de Chile
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Peer review status:UNDER REVIEW

05 Mar 2020Submitted to Ecology and Evolution
06 Mar 2020Submission Checks Completed
06 Mar 2020Assigned to Editor
22 Mar 2020Reviewer(s) Assigned
07 Apr 2020Review(s) Completed, Editorial Evaluation Pending
05 May 2020Editorial Decision: Revise Minor
05 Jul 20201st Revision Received
05 Jul 2020Assigned to Editor
05 Jul 2020Submission Checks Completed
05 Jul 2020Review(s) Completed, Editorial Evaluation Pending

Abstract

We use adaptive dynamics models to study how changes in the abiotic environment affect patterns of evolutionary dynamics and diversity in evolving communities of organisms with complex phenotypes. The models are based on the logistic competition model and environmental changes are implemented as a temporal change of the carrying capacity as a function of phenotype. In general we observe that environmental changes cause a reduction in the number of species, in total population size, and in phenotypic diversity. The rate of environmental change is crucial for determining whether a community survives or undergoes extinction. Until some critical rate of environmental changes, species are able to follow evolutionarily the shifting phenotypic optimum of the carrying capacity, and many communities adapt to the changing conditions and converge to new stationary states. When environmental changes stop, such communities gradually restore their initial phenotypic diversity.