Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica
Antarctic surface waters are expected to be the first to experience severe ocean acidification (OA) with carbonate undersaturation and large decreases in pH forecasted before the end of this century. Due to the long stability in environmental conditions and the relatively low daily and seasonal vari...
| Autores: | , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versión aceptada para publicación |
| Data de publicação: | 2020 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositório: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/174939 |
| Acesso em linha: | https://hdl.handle.net/2445/174939 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Diòxid de carboni Equinoderms Antàrtic, Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification |
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Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, AntarcticaGiglio, S. DiAgüera, A.Pernet, PhilippeM'Zoudi, S.Angulo Preckler, CarlosÁvila Escartín, ConxitaDubois, Ph.Diòxid de carboniEquinodermsAntàrtic, OceàCalcificacióCarbon dioxideEchinodermataAntarctic OceanCalcificationAntarctic surface waters are expected to be the first to experience severe ocean acidification (OA) with carbonate undersaturation and large decreases in pH forecasted before the end of this century. Due to the long stability in environmental conditions and the relatively low daily and seasonal variations to which they are exposed, Antarctic marine organisms, especially those with a supposedly poor machinery to eliminate CO2 and protons and with a heavily calcified skeleton like echinoderms, are hypothesized as highly vulnerable to these environmental shifts. The opportunities offered by the natural pH gradient generated by vent activities in Deception Island caldera, Western Antarctic Peninsula, were used to investigate for the first time the acid-base physiologies, the impact of OA on the skeleton and the impact of pH on metal accumulation in the Antarctic sea star Odontaster validus and sea urchin Sterechinus neumayeri. The two species were sampled in four stations within the caldera, two at pH (total scale) 8.0-8.1 and two at reduced pH 7.8. Measured variables were pH, alkalinity, and dissolved inorganic carbon of the coelomic fluid; characteristic fracture force, stress and Young's modulus using Weibull statistics and Cd, Cu, Fe, Pb and Zn concentrations in the integument, gonads and digestive system. Recorded acid-base characteristics of both studied species fit in the general picture deduced from temperate and tropical sea stars and sea urchins but conditions and possibly confounding factors, principally food availability and quality, in the studied stations prevented definitive conclusions. Reduced seawater pH 7.8 and metals had almost no impact on the skeleton mechanical properties of the two investigated species despite very high Cd concentrations in O. validus integument. Reduced pH was correlated to increased contamination by most metals but this relation was weak. Translocation and caging experiments taking into account food parameters are proposed to better understand future processes linked to ocean acidification and metal contamination in Antarctic echinoderms.Elsevier B.V.2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/174939Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.scitotenv.2020.142669Science of the Total Environment, 2020, vol. 765, p. 142669https://doi.org/10.1016/j.scitotenv.2020.142669cc-by-nc-nd (c) Elsevier B.V., 2020http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1749392026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| title |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| spellingShingle |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica Giglio, S. Di Diòxid de carboni Equinoderms Antàrtic, Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification |
| title_short |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| title_full |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| title_fullStr |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| title_full_unstemmed |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| title_sort |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
| dc.creator.none.fl_str_mv |
Giglio, S. Di Agüera, A. Pernet, Philippe M'Zoudi, S. Angulo Preckler, Carlos Ávila Escartín, Conxita Dubois, Ph. |
| author |
Giglio, S. Di |
| author_facet |
Giglio, S. Di Agüera, A. Pernet, Philippe M'Zoudi, S. Angulo Preckler, Carlos Ávila Escartín, Conxita Dubois, Ph. |
| author_role |
author |
| author2 |
Agüera, A. Pernet, Philippe M'Zoudi, S. Angulo Preckler, Carlos Ávila Escartín, Conxita Dubois, Ph. |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Diòxid de carboni Equinoderms Antàrtic, Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification |
| topic |
Diòxid de carboni Equinoderms Antàrtic, Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification |
| description |
Antarctic surface waters are expected to be the first to experience severe ocean acidification (OA) with carbonate undersaturation and large decreases in pH forecasted before the end of this century. Due to the long stability in environmental conditions and the relatively low daily and seasonal variations to which they are exposed, Antarctic marine organisms, especially those with a supposedly poor machinery to eliminate CO2 and protons and with a heavily calcified skeleton like echinoderms, are hypothesized as highly vulnerable to these environmental shifts. The opportunities offered by the natural pH gradient generated by vent activities in Deception Island caldera, Western Antarctic Peninsula, were used to investigate for the first time the acid-base physiologies, the impact of OA on the skeleton and the impact of pH on metal accumulation in the Antarctic sea star Odontaster validus and sea urchin Sterechinus neumayeri. The two species were sampled in four stations within the caldera, two at pH (total scale) 8.0-8.1 and two at reduced pH 7.8. Measured variables were pH, alkalinity, and dissolved inorganic carbon of the coelomic fluid; characteristic fracture force, stress and Young's modulus using Weibull statistics and Cd, Cu, Fe, Pb and Zn concentrations in the integument, gonads and digestive system. Recorded acid-base characteristics of both studied species fit in the general picture deduced from temperate and tropical sea stars and sea urchins but conditions and possibly confounding factors, principally food availability and quality, in the studied stations prevented definitive conclusions. Reduced seawater pH 7.8 and metals had almost no impact on the skeleton mechanical properties of the two investigated species despite very high Cd concentrations in O. validus integument. Reduced pH was correlated to increased contamination by most metals but this relation was weak. Translocation and caging experiments taking into account food parameters are proposed to better understand future processes linked to ocean acidification and metal contamination in Antarctic echinoderms. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion |
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article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/174939 |
| url |
https://hdl.handle.net/2445/174939 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Versió postprint del document publicat a: https://doi.org/10.1016/j.scitotenv.2020.142669 Science of the Total Environment, 2020, vol. 765, p. 142669 https://doi.org/10.1016/j.scitotenv.2020.142669 |
| dc.rights.none.fl_str_mv |
cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier B.V. |
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Elsevier B.V. |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) reponame:Dipòsit Digital de la UB instname:Universidad de Barcelona |
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Universidad de Barcelona |
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Dipòsit Digital de la UB |
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Dipòsit Digital de la UB |
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15,301603 |