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...
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ftubarcepubl:oai:diposit.ub.edu:2445/174939 2024-02-11T09:57:23+01:00 Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica Giglio, S. Di Agüera, A. Pernet, Ph. M'Zoudi, S. Angulo-Preckler, C. Ávila Escartín, Conxita Dubois, Ph. 2020 12 p. application/pdf http://hdl.handle.net/2445/174939 eng eng Elsevier B.V. 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 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) https://doi.org/10.1016/j.scitotenv.2020.142669 0048-9697 http://hdl.handle.net/2445/174939 707194 cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess Diòxid de carboni Equinoderms Antàrtic Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 2020 ftubarcepubl https://doi.org/10.1016/j.scitotenv.2020.142669 2024-01-24T01:14:27Z 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 ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Deception Island Ocean acidification Dipòsit Digital de la Universitat de Barcelona Antarctic Antarctic Ocean Antarctic Peninsula Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) The Antarctic Science of The Total Environment 765 142669 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Diòxid de carboni Equinoderms Antàrtic Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification |
spellingShingle |
Diòxid de carboni Equinoderms Antàrtic Oceà Calcificació Carbon dioxide Echinodermata Antarctic Ocean Calcification Giglio, S. Di Agüera, A. Pernet, Ph. M'Zoudi, S. Angulo-Preckler, C. Ávila Escartín, Conxita Dubois, Ph. Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
topic_facet |
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 ... |
format |
Article in Journal/Newspaper |
author |
Giglio, S. Di Agüera, A. Pernet, Ph. M'Zoudi, S. Angulo-Preckler, C. Ávila Escartín, Conxita Dubois, Ph. |
author_facet |
Giglio, S. Di Agüera, A. Pernet, Ph. M'Zoudi, S. Angulo-Preckler, C. Ávila Escartín, Conxita Dubois, Ph. |
author_sort |
Giglio, S. Di |
title |
Effects of ocean acidification on acid-base physiology, skeleton properties, andmetal contamination in two echinoderms fromvent sites in Deception Island, Antarctica |
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 |
publisher |
Elsevier B.V. |
publishDate |
2020 |
url |
http://hdl.handle.net/2445/174939 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Antarctic Antarctic Ocean Antarctic Peninsula Deception Island The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Antarctic Peninsula Deception Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Deception Island Ocean acidification |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Deception Island Ocean acidification |
op_relation |
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 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) https://doi.org/10.1016/j.scitotenv.2020.142669 0048-9697 http://hdl.handle.net/2445/174939 707194 |
op_rights |
cc-by-nc-nd (c) Elsevier B.V., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2020.142669 |
container_title |
Science of The Total Environment |
container_volume |
765 |
container_start_page |
142669 |
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1790609679222571008 |