Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa
Ocean acidification is expected to impact the high latitude oceans first, as CO 2 dissolves more easily in colder waters. At the current rate of anthropogenic CO 2 emissions, the sub-Antarctic Zone will start to experience undersaturated conditions with respect to aragonite within the next few decad...
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Language: | English |
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2021
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Online Access: | https://www.vliz.be/imisdocs/publications/51/360251.pdf |
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ftnioz:oai:imis.nioz.nl:336310 2023-05-15T13:47:57+02:00 Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa Mekkes, L. Sepúlveda-Rodríguez, G. Bielkinaite, G. Wall-Palmer, D. Brummer, G.-J. A. Dämmer, L.K. Huisman, J. van Loon, E. Renema, W. Peijnenburg, K.T.C.A. 2021 application/pdf https://www.vliz.be/imisdocs/publications/51/360251.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000625560200001 info:eu-repo/semantics/altIdentifier/doi/.org/10.3389/fmars.2021.581432 https://www.vliz.be/imisdocs/publications/51/360251.pdf info:eu-repo/semantics/openAccess %3Ci%3EFront.+Mar.+Sci.+8%3C%2Fi%3E%3A+581432.+%3Ca+href%3D%22https%3A%2F%2Fdoi.org%2F10.3389%2Ffmars.2021.581432%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdoi.org%2F10.3389%2Ffmars.2021.581432%3C%2Fa%3E Limacina retroversa info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftnioz https://doi.org/10.3389/fmars.2021.581432 2022-05-01T14:14:05Z Ocean acidification is expected to impact the high latitude oceans first, as CO 2 dissolves more easily in colder waters. At the current rate of anthropogenic CO 2 emissions, the sub-Antarctic Zone will start to experience undersaturated conditions with respect to aragonite within the next few decades, which will affect marine calcifying organisms. Shelled pteropods, a group of calcifying zooplankton, are considered to be especially sensitive to changes in carbonate chemistry because of their thin aragonite shells. Limacina retroversa is the most abundant pteropod in sub-Antarctic waters, and plays an important role in the carbonate pump. However, not much is known about its response to ocean acidification. In this study, we investigated differences in calcification between L. retroversa individuals exposed to ocean carbonate chemistry conditions of the past (pH 8.19; mid-1880s), present (pH 8.06), and near-future (pH 7.93; predicted for 2050) in the sub-Antarctic. After 3 days of exposure, calcification responses were quantified by calcein staining, shell weighing, and Micro-CT scanning. In pteropods exposed to past conditions, calcification occurred over the entire shell and the leading edge of the last whorl, whilst individuals incubated under present and near-future conditions mostly invested in extending their shells, rather than calcifying over their entire shell. Moreover, individuals exposed to past conditions formed larger shell volumes compared to present and future conditions, suggesting that calcification is already decreased in today’s sub-Antarctic waters. Shells of individuals incubated under near-future conditions did not increase in shell weight during the incubation, and had a lower density compared to past and present conditions, suggesting that calcification will be further compromised inthe future. This demonstrates the high sensitivity of L. retroversa to relatively small and short-term changes in carbonate chemistry. A reduction in calcification of L. retroversa in the rapidly acidifying waters of the sub-Antarctic will have a major impact on aragonite-CaCO 3 export from oceanic surface waters to the deep sea. Article in Journal/Newspaper Antarc* Antarctic Ocean acidification NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Frontiers in Marine Science 8 |
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Open Polar |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
topic |
Limacina retroversa |
spellingShingle |
Limacina retroversa Mekkes, L. Sepúlveda-Rodríguez, G. Bielkinaite, G. Wall-Palmer, D. Brummer, G.-J. A. Dämmer, L.K. Huisman, J. van Loon, E. Renema, W. Peijnenburg, K.T.C.A. Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
topic_facet |
Limacina retroversa |
description |
Ocean acidification is expected to impact the high latitude oceans first, as CO 2 dissolves more easily in colder waters. At the current rate of anthropogenic CO 2 emissions, the sub-Antarctic Zone will start to experience undersaturated conditions with respect to aragonite within the next few decades, which will affect marine calcifying organisms. Shelled pteropods, a group of calcifying zooplankton, are considered to be especially sensitive to changes in carbonate chemistry because of their thin aragonite shells. Limacina retroversa is the most abundant pteropod in sub-Antarctic waters, and plays an important role in the carbonate pump. However, not much is known about its response to ocean acidification. In this study, we investigated differences in calcification between L. retroversa individuals exposed to ocean carbonate chemistry conditions of the past (pH 8.19; mid-1880s), present (pH 8.06), and near-future (pH 7.93; predicted for 2050) in the sub-Antarctic. After 3 days of exposure, calcification responses were quantified by calcein staining, shell weighing, and Micro-CT scanning. In pteropods exposed to past conditions, calcification occurred over the entire shell and the leading edge of the last whorl, whilst individuals incubated under present and near-future conditions mostly invested in extending their shells, rather than calcifying over their entire shell. Moreover, individuals exposed to past conditions formed larger shell volumes compared to present and future conditions, suggesting that calcification is already decreased in today’s sub-Antarctic waters. Shells of individuals incubated under near-future conditions did not increase in shell weight during the incubation, and had a lower density compared to past and present conditions, suggesting that calcification will be further compromised inthe future. This demonstrates the high sensitivity of L. retroversa to relatively small and short-term changes in carbonate chemistry. A reduction in calcification of L. retroversa in the rapidly acidifying waters of the sub-Antarctic will have a major impact on aragonite-CaCO 3 export from oceanic surface waters to the deep sea. |
format |
Article in Journal/Newspaper |
author |
Mekkes, L. Sepúlveda-Rodríguez, G. Bielkinaite, G. Wall-Palmer, D. Brummer, G.-J. A. Dämmer, L.K. Huisman, J. van Loon, E. Renema, W. Peijnenburg, K.T.C.A. |
author_facet |
Mekkes, L. Sepúlveda-Rodríguez, G. Bielkinaite, G. Wall-Palmer, D. Brummer, G.-J. A. Dämmer, L.K. Huisman, J. van Loon, E. Renema, W. Peijnenburg, K.T.C.A. |
author_sort |
Mekkes, L. |
title |
Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
title_short |
Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
title_full |
Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
title_fullStr |
Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
title_full_unstemmed |
Effects of ocean acidification on calcification of the sub-Antarctic pteropod Limacina retroversa |
title_sort |
effects of ocean acidification on calcification of the sub-antarctic pteropod limacina retroversa |
publishDate |
2021 |
url |
https://www.vliz.be/imisdocs/publications/51/360251.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Ocean acidification |
genre_facet |
Antarc* Antarctic Ocean acidification |
op_source |
%3Ci%3EFront.+Mar.+Sci.+8%3C%2Fi%3E%3A+581432.+%3Ca+href%3D%22https%3A%2F%2Fdoi.org%2F10.3389%2Ffmars.2021.581432%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdoi.org%2F10.3389%2Ffmars.2021.581432%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000625560200001 info:eu-repo/semantics/altIdentifier/doi/.org/10.3389/fmars.2021.581432 https://www.vliz.be/imisdocs/publications/51/360251.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2021.581432 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
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1766248059430240256 |