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Multimodel inference in ecology and evolution: challenges and solutions.

C E Grueber1, S Nakagawa, R J Laws

  • 1Department of Zoology, University of Otago, Dunedin, New Zealand. c_grueber@yahoo.co.nz

Journal of Evolutionary Biology
|January 29, 2011
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Summary
This summary is machine-generated.

Model averaging is useful for complex ecological and evolutionary analyses but presents practical challenges. This study addresses these issues, offering solutions and identifying areas for future research to improve accessibility.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Statistics

Background:

  • Information theoretic approaches and model averaging are gaining traction in ecological and evolutionary research.
  • Applying these methods to complex, realistic models poses significant challenges, particularly for researchers without a formal statistics background.

Purpose of the Study:

  • To identify and discuss practical obstacles encountered when applying model averaging to complex ecological and evolutionary models.
  • To provide tentative solutions for existing issues and highlight areas requiring further research.
  • To enhance the accessibility of model averaging techniques for researchers in ecology and evolution.

Main Methods:

  • Review of practical challenges in model averaging complex models.
  • Identification of issues such as collinearity and computation of model-averaged parameters.
  • Exploration of unresolved questions regarding random effects and information criteria selection.
  • Demonstration with a worked example of mixed model analysis for inbreeding depression.

Main Results:

  • Several practical obstacles to model averaging complex models were identified.
  • Tentative solutions were proposed for issues like predictor collinearity and parameter averaging.
  • Areas needing future research were highlighted, including random effects and information criteria choice.

Conclusions:

  • Addressing practical challenges can make model averaging more accessible for complex ecological and evolutionary studies.
  • Further research is needed to resolve ambiguities in applying model averaging with random factors.
  • The study provides a foundation for broader adoption of model averaging in diverse ecological and evolutionary research.