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Eco-evolutionary Dynamics and Collective Dispersal: Implications for Salmon Metapopulation Robustness by Yeakel, Justin D.; Gibert, Jean P.; Westley, Peter A. H.; Moore, Jonathan W. is a scholarly article available to read on EtoBox.

What is Eco-evolutionary Dynamics and Collective Dispersal: Implications for Salmon Metapopulation Robustness about?

The spatial dispersal of individuals is known to play an important role in the dynamics of populations, and is central to metapopulation theory. At the same time, local adaptation to environmental conditions creates a geographic mosaic of evolutionary forces, where the combined drivers of selection and gene flow interact. Although the dispersal of individuals from donor to recipient populations provides connections within the metapopulation, promoting demographic and evolutionary rescue, it may also introduce maladapted individuals into habitats host to different environmental conditions, potentially lowering the fitness of the recipient population. Here we explore a model of the eco-evolutionary dynamics between two populations connected by dispersal, where the productivity of each is defined by a trait complex that is subject to local selection. Although general in nature, our model is inspired by salmon metapopulations, where dispersal between populations is defined in terms of the straying rate, which has been shown to be density-dependent. The results of our model reveal that increased straying between evolving populations leads to alternative stable states, which has large an

Author

Yeakel, Justin D.; Gibert, Jean P.; Westley, Peter A. H.; Moore, Jonathan W.

Published

2017

Language

EN