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Related Concept Videos

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Global Climate Change

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Can a species keep pace with a shifting climate?

H Berestycki1, O Diekmann, C J Nagelkerke

  • 1Ecole des hautes études en sciences sociales, CAMS, 54 Boulevard Raspail, 75006, Paris, France. hb@ehess.fr

Bulletin of Mathematical Biology
|December 11, 2008
PubMed
Summary

This study models population persistence in shifting climates. Results show that while narrow habitats and climate speed impact survival, increased mobility can aid adaptation, with range shifts being more detectable at the expanding front.

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Area of Science:

  • Ecology
  • Mathematical Biology
  • Climate Change Adaptation

Background:

  • Climate change forces habitats to shift, posing challenges for resident populations.
  • Understanding population dynamics within moving habitats is crucial for conservation.

Purpose of the Study:

  • To investigate population persistence in a one-dimensional habitat shifting due to climate change.
  • To determine how factors like habitat size, climate velocity, population growth, and mobility influence survival.

Main Methods:

  • Development of a dynamic profile model based on a growth-diffusion equation.
  • Analysis using phase portraits for a special case.
  • Rigorous partial differential equation (PDE) methods, including the maximum principle, for general cases.

Main Results:

  • Population persistence depends critically on habitat length, climate shift speed, growth rate, and individual mobility.
  • Increased mobility can paradoxically hinder or help climate tracking.
  • Narrow habitats severely reduce the ability to track climate shifts.
  • Population range and size can fluctuate under climate movement.

Conclusions:

  • The study provides a dichotomy for population persistence under climate shifts.
  • Range shifts are more pronounced and detectable at the expanding population front.
  • Ecological models incorporating climate dynamics are essential for predicting species' responses to environmental change.