Journal
ECOLOGY LETTERS
Volume 22, Issue 5, Pages 767-777Publisher
WILEY
DOI: 10.1111/ele.13234
Keywords
Adaptive evolution; environmental gradient; population clustering; range expansion; spatially structured population
Categories
Funding
- CNRS
- Administrative Department of Science, Technology and Innovation of Colombia Colciencias
- Chair Modelisation Mathematique et Biodiversite' of Veolia Environnement - E cole Polytechnique - Museum National d'Histoire Naturelle - Fondation X
- French National Research Agency [ANR-14-CE25-0013]
- FACE Partner University Fund
- CNRS Mission pour l'Interdisciplinarite
- LabEx MemoLife
- PSL University (IRIS OCAV)
- PSL University (PSL-University of Arizona Mobility Program)
- NSF Dimensions of Biodiversity [DEB-1831493]
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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.
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