A climate-associated multispecies cryptic cline in the northwest Atlantic

作者：Stanley Ryan R E^*; DiBacco Claudio; Lowen Ben; Beiko Robert G; Jeffery Nick W; Van Wyngaarden Mallory; Bentzen Paul; Brickman David; Benestan Laura; Bernatchez Louis; Johnson Catherine; Snelgrove Paul V R; Wang Zeliang; Wringe Brendan F; Bradbury Ian R

来源：Science Advances, 2018, 4(3): eaaq0929.

DOI：10.1126/sciadv.aaq0929

The spatial genetic structure of most species in the open marine environment remains largely unresolved. This information gap creates uncertainty in the sustainable management, recovery, and associated resilience of marine communities and our capacity to extrapolate beyond the few species for which such information exists. We document a previously unidentified multispecies biogeographic break aligned with a steep climatic gradient and driven by seasonal temperature minima in the northwest Atlantic. The coherence of this genetic break across our five study species with contrasting life histories suggests a pervasivemacroecological phenomenon. The integration of this genetic structure with habitat suitability models and climate forecasts predicts significant variation in northward distributional shifts among populations and availability of suitable habitat in future oceans. The results of our integrated approach provide new perspective on how cryptic intraspecific diversity associated with climatic variation influences species and community response to climate change beyond simple poleward shifts.

• 出版日期2018-3