Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent 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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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/315294 2023-05-15T14:02:21+02:00 Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica Di Giglio, Sarah Aguera Garcia, Antonio Pernet, Philippe M'Zoudi, Saloua Angulo-Preckler, Carlos Avila, Conxita Dubois, Philippe 2020-01-01 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315294 https://dipot.ulb.ac.be/dspace/bitstream/2013/315294/3/DiGiglioetal2020_Deception_island_postprint.pdf en eng uri/info:doi/10.1016/j.scitotenv.2020.142669 uri/info:pii/S0048969720361982 uri/info:scp/85094165766 https://dipot.ulb.ac.be/dspace/bitstream/2013/315294/3/DiGiglioetal2020_Deception_island_postprint.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315294 1 full-text file(s): info:eu-repo/semantics/openAccess Science of the total environment Technologie de l'environnement contrôle de la pollution Environnement et pollution Traitement des déchets Calcification Echinoderms Marine benthic invertebrates Mechanical properties Metals contamination Ocean acidification West Antarctic peninsula (WAP) info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2020 ftunivbruxelles 2022-06-12T22:04:27Z 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 Peninsula Antarctica Deception Island Ocean acidification DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic The Antarctic Antarctic Peninsula Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Technologie de l'environnement contrôle de la pollution Environnement et pollution Traitement des déchets Calcification Echinoderms Marine benthic invertebrates Mechanical properties Metals contamination Ocean acidification West Antarctic peninsula (WAP) |
spellingShingle |
Technologie de l'environnement contrôle de la pollution Environnement et pollution Traitement des déchets Calcification Echinoderms Marine benthic invertebrates Mechanical properties Metals contamination Ocean acidification West Antarctic peninsula (WAP) Di Giglio, Sarah Aguera Garcia, Antonio Pernet, Philippe M'Zoudi, Saloua Angulo-Preckler, Carlos Avila, Conxita Dubois, Philippe Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
topic_facet |
Technologie de l'environnement contrôle de la pollution Environnement et pollution Traitement des déchets Calcification Echinoderms Marine benthic invertebrates Mechanical properties Metals contamination Ocean acidification West Antarctic peninsula (WAP) |
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 |
Di Giglio, Sarah Aguera Garcia, Antonio Pernet, Philippe M'Zoudi, Saloua Angulo-Preckler, Carlos Avila, Conxita Dubois, Philippe |
author_facet |
Di Giglio, Sarah Aguera Garcia, Antonio Pernet, Philippe M'Zoudi, Saloua Angulo-Preckler, Carlos Avila, Conxita Dubois, Philippe |
author_sort |
Di Giglio, Sarah |
title |
Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
title_short |
Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
title_full |
Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
title_fullStr |
Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
title_full_unstemmed |
Effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in Deception Island, Antarctica |
title_sort |
effects of ocean acidification on acid-base physiology, skeleton properties, and metal contamination in two echinoderms from vent sites in deception island, antarctica |
publishDate |
2020 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315294 https://dipot.ulb.ac.be/dspace/bitstream/2013/315294/3/DiGiglioetal2020_Deception_island_postprint.pdf |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Deception Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Deception Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Deception Island Ocean acidification |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Deception Island Ocean acidification |
op_source |
Science of the total environment |
op_relation |
uri/info:doi/10.1016/j.scitotenv.2020.142669 uri/info:pii/S0048969720361982 uri/info:scp/85094165766 https://dipot.ulb.ac.be/dspace/bitstream/2013/315294/3/DiGiglioetal2020_Deception_island_postprint.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315294 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766272595446988800 |