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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
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Using Modern Coexistence Theory to Understand Community Disassembly.

Joe Brennan1,2, Sebastian J Schreiber1,2

  • 1Department of Evolution and Ecology, University of California, Davis, California, USA.

Ecology Letters
|June 24, 2026
PubMed
Summary
This summary is machine-generated.

Secondary extinctions, where one species loss triggers others, are explained by Modern Coexistence Theory. This framework uses community disassembly graphs and invasion growth rates (IGRs) to predict and understand these ecological events.

Keywords:
coexistence theorycommunity disassemblycompetitionfacilitationkeystone predationsecondary extinction

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Published on: January 19, 2019

Area of Science:

  • Ecology
  • Theoretical Ecology
  • Community Ecology

Background:

  • Community disassembly studies how species extinction impacts ecological communities.
  • Secondary extinctions, triggered by initial species loss, are complex due to intricate species interactions.
  • Identifying mechanisms behind secondary extinctions remains challenging.

Purpose of the Study:

  • To utilize Modern Coexistence Theory for identifying the conditions and causes of secondary extinctions.
  • To introduce a novel framework for analyzing community disassembly dynamics.

Main Methods:

  • Introduction of the community disassembly graph, utilizing invasion growth rates (IGRs) to detect community state transitions caused by extinction.
  • Decomposition of IGRs to elucidate the specific mechanisms driving secondary extinctions.
  • Application of the framework to ecological models incorporating competition, facilitation, and predation.

Main Results:

  • The community disassembly graph effectively identifies secondary extinction events.
  • Decomposition of IGRs reveals the roles of interspecific interactions in secondary extinctions.
  • Modern Coexistence Theory provides a robust method for analyzing these dynamics.

Conclusions:

  • Modern Coexistence Theory offers a flexible and interpretable approach to understanding secondary extinctions.
  • The developed framework aids in predicting and explaining species loss cascades in ecological communities.