Fisheries Oceanography, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

ABSTRACT The Atlantic surfclam, Spisula solidissima , and ocean quahog, Arctica islandica are biomass dominant bivalve species on the eastern North American continental shelf, both supporting lucrative commercial fisheries in Mid‐Atlantic with a combined value of about $53.6 million ex‐vessel revenue per year. thermal tolerance surfclam is generally below 20 °C, whereas boreal quahog resides colder waters maintained by Bight Cold Pool. Climate‐induced warming bottom water temperatures thought to be linked observed distributional shift population into historically dominated quahogs. As climate change expected continue, this study investigated future distributions two from years 2016 2095 using projected temperature‐dependent dynamics model. Simulations show progressive colonization surfclams offshore region earlier occupied Pool throughout 79‐year projection, beginning between mid‐2040s mid‐2050s, effectively compressing habitat all sides. Ocean quahogs shown vulnerable climate‐induced southern, inshore, portions ultimately restricting their end 21st century remaining core off Long Island. surfclams, however, likely less warming, increasing geographic footprint across MAB. Model projections indicate large‐scale reorganization event shelf benthic community structure remainder century.

Language: Английский