Can a key boreal Calanus copepod species now complete its life-cycle in the Arctic? Evidence and implications for Arctic food-webs.

Autor: Tarling GA; British Antarctic Survey, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK. gant@bas.ac.uk., Freer JJ; British Antarctic Survey, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK., Banas NS; Department of Mathematics and Statistics, University of Strathclyde, Livingstone Tower, 26 Richmond St, Glasgow, G1 1XH, UK., Belcher A; British Antarctic Survey, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK., Blackwell M; University of Franche-Comté, 3 Rue Claude Goudimel, 25000, Besançon, France., Castellani C; Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, PL1 3DH, UK., Cook KB; National Oceanography Centre, European Way, Southampton, SO14 3ZH, UK., Cottier FR; Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Dunbeg, Oban, Argyll and Bute, PA37 1QA, UK., Daase M; Institute for Arctic and Marine Biology, UiT The Arctic University of Norway, Breivika, 9037, Tromsø, Norway., Johnson ML; Department of Biological and Marine Sciences, University of Hull, Hull, HU6 7RX, UK., Last KS; Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Dunbeg, Oban, Argyll and Bute, PA37 1QA, UK., Lindeque PK; Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, PL1 3DH, UK., Mayor DJ; National Oceanography Centre, European Way, Southampton, SO14 3ZH, UK., Mitchell E; Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Dunbeg, Oban, Argyll and Bute, PA37 1QA, UK., Parry HE; Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, PL1 3DH, UK., Speirs DC; Department of Mathematics and Statistics, University of Strathclyde, Livingstone Tower, 26 Richmond St, Glasgow, G1 1XH, UK., Stowasser G; British Antarctic Survey, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK., Wootton M; The Laboratory, Citadel Hill, Plymouth, PL1 2PB, UK.
Jazyk: angličtina
Zdroj: Ambio [Ambio] 2022 Feb; Vol. 51 (2), pp. 333-344. Date of Electronic Publication: 2021 Nov 29.
DOI: 10.1007/s13280-021-01667-y
Abstrakt: The changing Arctic environment is affecting zooplankton that support its abundant wildlife. We examined how these changes are influencing a key zooplankton species, Calanus finmarchicus, principally found in the North Atlantic but expatriated to the Arctic. Close to the ice-edge in the Fram Strait, we identified areas that, since the 1980s, are increasingly favourable to C. finmarchicus. Field-sampling revealed part of the population there to be capable of amassing enough reserves to overwinter. Early developmental stages were also present in early summer, suggesting successful local recruitment. This extension to suitable C. finmarchicus habitat is most likely facilitated by the long-term retreat of the ice-edge, allowing phytoplankton to bloom earlier and for longer and through higher temperatures increasing copepod developmental rates. The increased capacity for this species to complete its life-cycle and prosper in the Fram Strait can change community structure, with large consequences to regional food-webs.
(© 2021. The Author(s).)
Databáze: MEDLINE
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