Jul 21, 2016

Dispersal: a central trait in life history

BioRxiv : the Preprint Server for Biology
Dries Bonte, Maxime Dahirel

Abstract

The study of trade-offs among major life history components (age at maturity, lifespan and reproduction) allowed the development of a quantitative framework to understand how environmental variation shapes patterns of biodiversity among and within species. Because every environment is inherently spatially structured, Individuals need to move within and among habitats to maximize fitness. Dispersal is often assumed to be tightly integrated into life histories, in particular within the fast-slow continuum of life-history variation, and this integration is used to explain many aspects of population and community dynamics. Evidence for a general, context-independent, integration of dispersal in life histories is however weak, and suggests that dispersal needs to be considered as a central and independent axis in individual life histories. We synthesize theoretical and empirical evidence on the central role of dispersal and its evolutionary dynamics on the spatial distribution of ecological strategies and its impact on population spread, invasions and coexistence. By applying an optimality framework we show that the inclusion of dispersal as an independent dimension of life histories might substantially change our view on evolutiona...Continue Reading

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Mentioned in this Paper

Study
Patterns
Acclimatization
Spatial Distribution
Reproduction
Environment
Adaptation
With Configuration
Species
Orientation (spatial)

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