Local adaptation, dispersal evolution, and the spatial eco-evolutionary dynamics of invasion

Martín Andrade-Restrepo, Nicolas Champagnat, Régis Ferrière

Research output: Contribution to journalLetter

4 Scopus citations

Abstract

Local adaptation and dispersal evolution are key evolutionary processes shaping the invasion dynamics of populations colonizing new environments. Yet their interaction is largely unresolved. Using a single-species population model along a one-dimensional environmental gradient, we show how local competition and dispersal jointly shape the eco-evolutionary dynamics and speed of invasion. From a focal introduction site, the generic pattern predicted by our model features a temporal transition from wave-like to pulsed invasion. Each regime is driven primarily by local adaptation, while the transition is caused by eco-evolutionary feedbacks mediated by dispersal. The interaction range and cost of dispersal arise as key factors of the duration and speed of each phase. Our results demonstrate that spatial eco-evolutionary feedbacks along environmental gradients can drive strong temporal variation in the rate and structure of population spread, and must be considered to better understand and forecast invasion rates and range dynamics.

Original languageEnglish (US)
Pages (from-to)767-777
Number of pages11
JournalEcology letters
Volume22
Issue number5
DOIs
StatePublished - May 2019

Keywords

  • Adaptive evolution
  • environmental gradient
  • population clustering
  • range expansion
  • spatially structured population

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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