Oysters as sentinels of climate variability and climate change in coastal ecosystems
Beyond key ecological services, marine resources are crucial for human food security and socio-economical sustainability. Among them, shellfish aquaculture and fishing are of primary importance but become more vulnerable under anthropogenic pressure, as evidenced by reported mass mortality events li...
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ftarchimer:oai:archimer.ifremer.fr:57255 2023-05-15T17:31:36+02:00 Oysters as sentinels of climate variability and climate change in coastal ecosystems Thomas, Yoann Cassou, Christophe Gernez, Pierre Pouvreau, Stephane 2018-10 application/pdf https://archimer.ifremer.fr/doc/00461/57255/59281.pdf https://doi.org/10.1088/1748-9326/aae254 https://archimer.ifremer.fr/doc/00461/57255/ eng eng Iop Publishing Ltd https://archimer.ifremer.fr/doc/00461/57255/59281.pdf doi:10.1088/1748-9326/aae254 https://archimer.ifremer.fr/doc/00461/57255/ 2018 The Author(s). Published by IOP Publishing Ltd info:eu-repo/semantics/openAccess restricted use Environmental Research Letters (1748-9326) (Iop Publishing Ltd), 2018-10 , Vol. 13 , N. 10 , P. 104009 (12p.) North Atlantic weather regime oyster monitoring network mortality risk assessment climate models RCP scenarios text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1088/1748-9326/aae254 2021-09-23T20:31:38Z Beyond key ecological services, marine resources are crucial for human food security and socio-economical sustainability. Among them, shellfish aquaculture and fishing are of primary importance but become more vulnerable under anthropogenic pressure, as evidenced by reported mass mortality events linked to global changes such as ocean warming and acidification, chemical contamination, and diseases. Understanding climate-related risks is a vital objective for conservation strategies, ecosystems management and human health. We provide here a comprehensive study of the historical mortality of adult oysters related to observed climate variability along the French Atlantic coast from 1986 to 2015, and we built on this knowledge to develop hindcast and forecast assessments of the oyster mortality risk from 1900 to 2100. We show that mortality events usually occur several months after winters dominated by the occurrence of positive North Atlantic oscillation (NAO+) atmospheric regimes of circulation. We explain the lagged response by the multiseasonal long-lasting imprint of wintertime NAO+ on biological and environmental factors, which partly structure oyster mortality etiology. Very high wintertime seawater temperature anomalies at the interannual timescale, which were mostly attributable to internal climate variability through NAO+ and which led to pronounced mortality over the observed period, are then treated as 'analogs' in a large ensemble of Intergovernmental Panel on Climate Change emission scenarios and models in order to anticipate future risks. Without any adaptive process, we provide evidence that actual exceptional mortality is likely to become the norm by ~2035, even if global warming is limited to +2 °C relative to pre-industrial levels. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Environmental Research Letters 13 10 104009 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
North Atlantic weather regime oyster monitoring network mortality risk assessment climate models RCP scenarios |
spellingShingle |
North Atlantic weather regime oyster monitoring network mortality risk assessment climate models RCP scenarios Thomas, Yoann Cassou, Christophe Gernez, Pierre Pouvreau, Stephane Oysters as sentinels of climate variability and climate change in coastal ecosystems |
topic_facet |
North Atlantic weather regime oyster monitoring network mortality risk assessment climate models RCP scenarios |
description |
Beyond key ecological services, marine resources are crucial for human food security and socio-economical sustainability. Among them, shellfish aquaculture and fishing are of primary importance but become more vulnerable under anthropogenic pressure, as evidenced by reported mass mortality events linked to global changes such as ocean warming and acidification, chemical contamination, and diseases. Understanding climate-related risks is a vital objective for conservation strategies, ecosystems management and human health. We provide here a comprehensive study of the historical mortality of adult oysters related to observed climate variability along the French Atlantic coast from 1986 to 2015, and we built on this knowledge to develop hindcast and forecast assessments of the oyster mortality risk from 1900 to 2100. We show that mortality events usually occur several months after winters dominated by the occurrence of positive North Atlantic oscillation (NAO+) atmospheric regimes of circulation. We explain the lagged response by the multiseasonal long-lasting imprint of wintertime NAO+ on biological and environmental factors, which partly structure oyster mortality etiology. Very high wintertime seawater temperature anomalies at the interannual timescale, which were mostly attributable to internal climate variability through NAO+ and which led to pronounced mortality over the observed period, are then treated as 'analogs' in a large ensemble of Intergovernmental Panel on Climate Change emission scenarios and models in order to anticipate future risks. Without any adaptive process, we provide evidence that actual exceptional mortality is likely to become the norm by ~2035, even if global warming is limited to +2 °C relative to pre-industrial levels. |
format |
Article in Journal/Newspaper |
author |
Thomas, Yoann Cassou, Christophe Gernez, Pierre Pouvreau, Stephane |
author_facet |
Thomas, Yoann Cassou, Christophe Gernez, Pierre Pouvreau, Stephane |
author_sort |
Thomas, Yoann |
title |
Oysters as sentinels of climate variability and climate change in coastal ecosystems |
title_short |
Oysters as sentinels of climate variability and climate change in coastal ecosystems |
title_full |
Oysters as sentinels of climate variability and climate change in coastal ecosystems |
title_fullStr |
Oysters as sentinels of climate variability and climate change in coastal ecosystems |
title_full_unstemmed |
Oysters as sentinels of climate variability and climate change in coastal ecosystems |
title_sort |
oysters as sentinels of climate variability and climate change in coastal ecosystems |
publisher |
Iop Publishing Ltd |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00461/57255/59281.pdf https://doi.org/10.1088/1748-9326/aae254 https://archimer.ifremer.fr/doc/00461/57255/ |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Environmental Research Letters (1748-9326) (Iop Publishing Ltd), 2018-10 , Vol. 13 , N. 10 , P. 104009 (12p.) |
op_relation |
https://archimer.ifremer.fr/doc/00461/57255/59281.pdf doi:10.1088/1748-9326/aae254 https://archimer.ifremer.fr/doc/00461/57255/ |
op_rights |
2018 The Author(s). Published by IOP Publishing Ltd info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1088/1748-9326/aae254 |
container_title |
Environmental Research Letters |
container_volume |
13 |
container_issue |
10 |
container_start_page |
104009 |
_version_ |
1766129274326089728 |