Aquatic resources play an important role in ensuring the food security of northern people. Predicting and managing the impacts of rapidly changing northern environments on these resources is crucial. We use an integrative approach combining population genomics and acoustic telemetry to characterize the interplay between migration, dispersal, and gene flow. We aim to understand how these processes will influence the capacity of populations to adapt to changing northern environments. Much of our work focuses on anadromous salmonids, particularly Arctic Char.