The role of continental shelf bathymetry in shaping marine range shifts in the face of climate change

Abstract

Many species in terrestrial and aquatic systems are shifting where they live in response to climate change (Lenoir & Svenning, 2015). Marine species are particularly sensitive to temperature changes associated with climate change, in part because they have evolved in the relatively stable thermal conditions characteristic of the ocean (Pinsky et al., 2019). This high sensitivity, coupled with higher dispersal potential and limited biogeographical barriers have led marine species to track isotherms poleward six times faster than their terrestrial counterparts (Lenoir et al., 2020). In addition, there is evidence that marine species are moving deeper to maintain their thermal niche (Dulvy et al., 2008;

Species redistribution creates unequal outcomes for multispecies fisheries under projected climate change

“…For shortspine thornyhead, the projected shift is as much as 20 km offshore at some latitudes. Offshore distributional shifts for DTS species are critically important from a fishery’s perspective because of the relatively narrow shelf along the U.S. West Coast ( 37 ). Relatively small longitudinal shifts can be associated with substantial increases in depth for bottom-dwelling species.…”

Species redistribution creates unequal outcomes for multispecies fisheries under projected climate change

“…For shortspine thornyhead, the projected shift is as much as 20 km offshore at some latitudes. Offshore distributional shifts for DTS species are critically important from a sheries perspective because of the relatively narrow shelf along the U.S. West Coast (Kitchel et al 2022). Relatively small longitudinal shifts can be associated with signi cant increases in depth for bottomdwelling species.…”

Faster ocean warming threatens richest areas of marine biodiversity

“…We repeated the analysis, restricting the search for climatic analogues to near‐shore Exclusive Economic Zones. We did this to investigate potential future dispersal conditions for species that rely on habitats found close to shore in relatively shallow waters (Kitchel et al, 2022; Nagelkerken et al, 2000).…”