Data from: Environmental extremes drive population structure at the northern range limit of Atlantic salmon in North America ...

• Main Authors: Sylvester, Emma V.A., Beiko, Robert G., Bentzen, Paul, Paterson, Ian, Horne, John B., Watson, Beth, Lehnert, Sarah, Duffy, Steven, Clément, Marie, Robertson, Martha J., Bradbury, Ian R., Sylvester, Emma V. A.
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Salmo salar; 2009-2015; Canada; Lake Melville; Atlantic salmon
• Online Access: https://dx.doi.org/10.5061/dryad.r3f10b5; https://datadryad.org/stash/dataset/doi:10.5061/dryad.r3f10b5

Conservation of exploited species requires an understanding of both genetic diversity and the dominant structuring forces, particularly near range limits, where climatic variation can drive rapid expansions or contractions of geographic range. Here, we examine population structure and landscape associations in Atlantic salmon (Salmo salar) across a heterogeneous landscape near the northern range limit in Labrador, Canada. Analysis of two amplicon-based data sets containing 101 microsatellites and 376 single nucleotide polymorphisms (SNPs) from 35 locations revealed clear differentiation between populations spawning in rivers flowing into a large marine embayment (Lake Melville) compared to coastal populations. The mechanisms influencing the differentiation of embayment populations were investigated using both multivariate and machine-learning landscape genetic approaches. We identified temperature as the strongest correlate with genetic structure, particularly warm temperature extremes and wider annual ... : Labrador Atlantic Salmon Sequenced SNP DataGenepop file of SNP genotype data for 1389 individuals across 35 salmon populations in Labrador Canada.SNPs_Labrador376_genepop.txt ...