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

Tarling, Geraint A. ORCID: https://orcid.org/0000-0002-3753-5899; Freer, Jennifer J. ORCID: https://orcid.org/0000-0002-3947-9261; Banas, Neil S.; Belcher, Anna ORCID: https://orcid.org/0000-0002-9583-5910; Blackwell, Mayleen; Castellani, Claudia; Cook, Kathryn B. ORCID: https://orcid.org/0000-0001-8590-3011; Cottier, Finlo R.; Daase, Malin; Johnson, Magnus L.; Last, Kim S.; Lindeque, Penelope K.; Mayor, Daniel J. ORCID: https://orcid.org/0000-0002-1295-0041; Mitchell, Elaine; Parry, Helen E.; Stowasser, Gabriele ORCID: https://orcid.org/0000-0002-0595-0772; Wootton, Marianne. 2022 Can a key boreal Calanus copepod species now complete its life-cycle in the Arctic? Evidence and implications for Arctic food-webs. Ambio, 51. 333-344. 10.1007/s13280-021-01667-y

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Official URL: https://link.springer.com/article/10.1007%2Fs13280...

Abstract/Summary

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.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1007/s13280-021-01667-y
ISSN:	00447447
Additional Keywords:	biogeography; Fram Strait; life-cycle; ocean warming; sea-ice loss; zooplankton
Date made live:	06 Dec 2021 09:54 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/530286

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1007/s13280-021-01667-y

ISSN:

00447447

Additional Keywords:

biogeography; Fram Strait; life-cycle; ocean warming; sea-ice loss; zooplankton

Date made live:

06 Dec 2021 09:54 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/530286