Biophysical models of dispersal contribute to seascape genetic analyses

Dispersal is generally difficult to directly observe. Instead, dispersal is often inferred from genetic markers and biophysical modelling where a correspondence indicates that dispersal routes and barriers explain a significant part of population genetic differentiation. Biophysical models are used...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series B. Biological sciences 2022-03, Vol.377 (1846), p.20210024-20210024
Main Authors: Jahnke, Marlene, Jonsson, Per R
Format: Article
Language:English
Subjects:
Adaptation, Physiological
Biological Sciences
Biologiska vetenskaper
biophysical modelling
dispersal
Genetic Markers
Genetic Variation
Genetics, Population
Genomics
Models, Genetic
population genetics
Review
seascape genetics
seascape genomics
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Summary:Dispersal is generally difficult to directly observe. Instead, dispersal is often inferred from genetic markers and biophysical modelling where a correspondence indicates that dispersal routes and barriers explain a significant part of population genetic differentiation. Biophysical models are used for wind-driven dispersal in terrestrial environments and for propagules drifting with ocean currents in the sea. In the ocean, such seascape genetic or seascape genomic studies provide promising tools in applied sciences, as actions within management and conservation rely on an understanding of population structure, genetic diversity and presence of local adaptations, all dependent on dispersal within the metapopulation. Here, we surveyed 87 studies that combine population genetics and biophysical models of dispersal. Our aim was to understand if biophysical dispersal models can generally explain genetic differentiation. Our analysis shows that genetic differentiation and lack of genetic differentiation can often be explained by dispersal, but the realism of the biophysical model, as well as local geomorphology and species biology also play a role. The review supports the use of a combination of both methods, and we discuss our findings in terms of recommendations for future studies and pinpoint areas where further development is necessary, particularly on how to compare both approaches. This article is part of the theme issue 'Species' ranges in the face of changing environments (part I)'.
ISSN:0962-8436
1471-2970
1471-2970
DOI:10.1098/rstb.2021.0024