Contrasting physiological responses to future ocean acidification among Arctic copepod populations
Widespread ocean acidification (OA) is modifying the chemistry of the global ocean, and the Arctic is recognized as the region where the changes will progress at the fastest rate. Moreover, Arctic species show lower capacity for cellular homeostasis and acid-base regulation rendering them particular...
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ftunivquebecar:oai:semaphore.uqar.ca:2173 2023-11-05T03:37:46+01:00 Contrasting physiological responses to future ocean acidification among Arctic copepod populations Thor, Peter Bailey, Allison Dupont, Sam Calosi, Piero Søreide, Janne E. De Wit, Pierre Guscelli, Ella Loubet-Sartrou, Lea Deichmann, Ida M. Candee, Martin M. Svensen, Camilla King, Andrew L. Bellerby, Richard G. J. 2018-01 application/pdf https://semaphore.uqar.ca/id/eprint/2173/ https://semaphore.uqar.ca/id/eprint/2173/1/Peter_Thor_et_al_aout2017.pdf https://doi.org/10.1111/gcb.13870 fr fre https://semaphore.uqar.ca/id/eprint/2173/1/Peter_Thor_et_al_aout2017.pdf Thor, Peter, Bailey, Allison, Dupont, Sam, Calosi, Piero orcid:0000-0003-3378-2603 , Søreide, Janne E., De Wit, Pierre, Guscelli, Ella, Loubet-Sartrou, Lea, Deichmann, Ida M., Candee, Martin M., Svensen, Camilla, King, Andrew L. et Bellerby, Richard G. J. (2018). Contrasting physiological responses to future ocean acidification among Arctic copepod populations. Global Change Biology, 24 (1). e365-e377. Article Évalué par les pairs 2018 ftunivquebecar https://doi.org/10.1111/gcb.13870 2023-10-07T23:10:41Z Widespread ocean acidification (OA) is modifying the chemistry of the global ocean, and the Arctic is recognized as the region where the changes will progress at the fastest rate. Moreover, Arctic species show lower capacity for cellular homeostasis and acid-base regulation rendering them particularly vulnerable to OA. In the present study, we found physiological differences in OA response across geographically separated populations of the keystone Arctic copepod Calanus glacialis. In copepodites stage CIV, measured reaction norms of ingestion rate and metabolic rate showed severe reductions in ingestion and increased metabolic expenses in two populations from Svalbard (Kongsfjord and Billefjord) whereas no effects were observed in a population from the Disko Bay, West Greenland. At pHT 7.87, which has been predicted for the Svalbard west coast by year 2100, these changes resulted in reductions in scope for growth of 19% in the Kongsfjord and a staggering 50% in the Billefjord. Interestingly, these effects were not observed in stage CV copepodites from any of the three locations. It seems that CVs may be more tolerant to OA perhaps due to a general physiological reorganization to meet low intracellular pH during hibernation. Needless to say, the observed changes in the CIV stage will have serious implications for the C. glacialis population health status and growth around Svalbard. However, OA tolerant populations such as the one in the Disko Bay could help to alleviate severe effects in C. glacialis as a species. -- Keywords : Arctic ingestion rate metabolic rate ocean acidification pCO2 pH reaction norm zooplankton. Article in Journal/Newspaper Arctic Arctic copepod Arctic Calanus glacialis Disko Bay Greenland Kongsfjord* Ocean acidification Svalbard Zooplankton Université du Québec à Rimouski (UQAR): Sémaphore Global Change Biology 24 1 e365 e377 |
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Open Polar |
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Université du Québec à Rimouski (UQAR): Sémaphore |
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ftunivquebecar |
language |
French |
description |
Widespread ocean acidification (OA) is modifying the chemistry of the global ocean, and the Arctic is recognized as the region where the changes will progress at the fastest rate. Moreover, Arctic species show lower capacity for cellular homeostasis and acid-base regulation rendering them particularly vulnerable to OA. In the present study, we found physiological differences in OA response across geographically separated populations of the keystone Arctic copepod Calanus glacialis. In copepodites stage CIV, measured reaction norms of ingestion rate and metabolic rate showed severe reductions in ingestion and increased metabolic expenses in two populations from Svalbard (Kongsfjord and Billefjord) whereas no effects were observed in a population from the Disko Bay, West Greenland. At pHT 7.87, which has been predicted for the Svalbard west coast by year 2100, these changes resulted in reductions in scope for growth of 19% in the Kongsfjord and a staggering 50% in the Billefjord. Interestingly, these effects were not observed in stage CV copepodites from any of the three locations. It seems that CVs may be more tolerant to OA perhaps due to a general physiological reorganization to meet low intracellular pH during hibernation. Needless to say, the observed changes in the CIV stage will have serious implications for the C. glacialis population health status and growth around Svalbard. However, OA tolerant populations such as the one in the Disko Bay could help to alleviate severe effects in C. glacialis as a species. -- Keywords : Arctic ingestion rate metabolic rate ocean acidification pCO2 pH reaction norm zooplankton. |
format |
Article in Journal/Newspaper |
author |
Thor, Peter Bailey, Allison Dupont, Sam Calosi, Piero Søreide, Janne E. De Wit, Pierre Guscelli, Ella Loubet-Sartrou, Lea Deichmann, Ida M. Candee, Martin M. Svensen, Camilla King, Andrew L. Bellerby, Richard G. J. |
spellingShingle |
Thor, Peter Bailey, Allison Dupont, Sam Calosi, Piero Søreide, Janne E. De Wit, Pierre Guscelli, Ella Loubet-Sartrou, Lea Deichmann, Ida M. Candee, Martin M. Svensen, Camilla King, Andrew L. Bellerby, Richard G. J. Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
author_facet |
Thor, Peter Bailey, Allison Dupont, Sam Calosi, Piero Søreide, Janne E. De Wit, Pierre Guscelli, Ella Loubet-Sartrou, Lea Deichmann, Ida M. Candee, Martin M. Svensen, Camilla King, Andrew L. Bellerby, Richard G. J. |
author_sort |
Thor, Peter |
title |
Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
title_short |
Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
title_full |
Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
title_fullStr |
Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
title_full_unstemmed |
Contrasting physiological responses to future ocean acidification among Arctic copepod populations |
title_sort |
contrasting physiological responses to future ocean acidification among arctic copepod populations |
publishDate |
2018 |
url |
https://semaphore.uqar.ca/id/eprint/2173/ https://semaphore.uqar.ca/id/eprint/2173/1/Peter_Thor_et_al_aout2017.pdf https://doi.org/10.1111/gcb.13870 |
genre |
Arctic Arctic copepod Arctic Calanus glacialis Disko Bay Greenland Kongsfjord* Ocean acidification Svalbard Zooplankton |
genre_facet |
Arctic Arctic copepod Arctic Calanus glacialis Disko Bay Greenland Kongsfjord* Ocean acidification Svalbard Zooplankton |
op_relation |
https://semaphore.uqar.ca/id/eprint/2173/1/Peter_Thor_et_al_aout2017.pdf Thor, Peter, Bailey, Allison, Dupont, Sam, Calosi, Piero orcid:0000-0003-3378-2603 , Søreide, Janne E., De Wit, Pierre, Guscelli, Ella, Loubet-Sartrou, Lea, Deichmann, Ida M., Candee, Martin M., Svensen, Camilla, King, Andrew L. et Bellerby, Richard G. J. (2018). Contrasting physiological responses to future ocean acidification among Arctic copepod populations. Global Change Biology, 24 (1). e365-e377. |
op_doi |
https://doi.org/10.1111/gcb.13870 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
1 |
container_start_page |
e365 |
op_container_end_page |
e377 |
_version_ |
1781693477467193344 |