Pteropods make thinner shells in the upwelling region of the California Current Ecosystem
Shelled pteropods are widely regarded as bioindicators for ocean acidification, because their fragile aragonite shells are susceptible to increasing ocean acidity. While short-term incubations have demonstrated that pteropod calcification is negatively impacted by ocean acidification, we know little...
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ftunivleiden:oai:scholarlypublications.universiteitleiden.nl:item_3280141 2023-05-15T17:08:02+02:00 Pteropods make thinner shells in the upwelling region of the California Current Ecosystem Mekkes, L. Renema, W. Bednarsek, N. Alin, S.R. Feely, R.A. Huisman, J. Roessingh, P. Peijnenburg, K.T.C.A. 2021 https://hdl.handle.net/1887/3280141 https://doi.org/10.1038/s41598-021-81131-9 en eng doi:10.1038/s41598-021-81131-9 lumc-id: 120815892 https://hdl.handle.net/1887/3280141 Scientific Reports Article / Letter to editor info:eu-repo/semantics/article Text 2021 ftunivleiden https://doi.org/10.1038/s41598-021-81131-9 2022-03-30T22:09:35Z Shelled pteropods are widely regarded as bioindicators for ocean acidification, because their fragile aragonite shells are susceptible to increasing ocean acidity. While short-term incubations have demonstrated that pteropod calcification is negatively impacted by ocean acidification, we know little about net calcification in response to varying ocean conditions in natural populations. Here, we examine in situ calcification of Limacina helicina pteropods collected from the California Current Ecosystem, a coastal upwelling system with strong spatial gradients in ocean carbonate chemistry, dissolved oxygen and temperature. Depth-averaged pH ranged from 8.03 in warmer offshore waters to 7.77 in cold CO2-rich waters nearshore. Based on high-resolution micro-CT technology, we showed that shell thickness declined by similar to 37% along the upwelling gradient from offshore to nearshore water. Dissolution marks covered only similar to 2% of the shell surface area and were not associated with the observed variation in shell thickness. We thus infer that pteropods make thinner shells where upwelling brings more acidified and colder waters to the surface. Probably the thinner shells do not result from enhanced dissolution, but are due to a decline in calcification. Reduced calcification of pteropods is likely to have major ecological and biogeochemical implications for the cycling of calcium carbonate in the oceans. Thrombosis and Hemostasis Article in Journal/Newspaper Limacina helicina Ocean acidification Leiden University Scholarly Publications Scientific Reports 11 1 |
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English |
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Shelled pteropods are widely regarded as bioindicators for ocean acidification, because their fragile aragonite shells are susceptible to increasing ocean acidity. While short-term incubations have demonstrated that pteropod calcification is negatively impacted by ocean acidification, we know little about net calcification in response to varying ocean conditions in natural populations. Here, we examine in situ calcification of Limacina helicina pteropods collected from the California Current Ecosystem, a coastal upwelling system with strong spatial gradients in ocean carbonate chemistry, dissolved oxygen and temperature. Depth-averaged pH ranged from 8.03 in warmer offshore waters to 7.77 in cold CO2-rich waters nearshore. Based on high-resolution micro-CT technology, we showed that shell thickness declined by similar to 37% along the upwelling gradient from offshore to nearshore water. Dissolution marks covered only similar to 2% of the shell surface area and were not associated with the observed variation in shell thickness. We thus infer that pteropods make thinner shells where upwelling brings more acidified and colder waters to the surface. Probably the thinner shells do not result from enhanced dissolution, but are due to a decline in calcification. Reduced calcification of pteropods is likely to have major ecological and biogeochemical implications for the cycling of calcium carbonate in the oceans. Thrombosis and Hemostasis |
format |
Article in Journal/Newspaper |
author |
Mekkes, L. Renema, W. Bednarsek, N. Alin, S.R. Feely, R.A. Huisman, J. Roessingh, P. Peijnenburg, K.T.C.A. |
spellingShingle |
Mekkes, L. Renema, W. Bednarsek, N. Alin, S.R. Feely, R.A. Huisman, J. Roessingh, P. Peijnenburg, K.T.C.A. Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
author_facet |
Mekkes, L. Renema, W. Bednarsek, N. Alin, S.R. Feely, R.A. Huisman, J. Roessingh, P. Peijnenburg, K.T.C.A. |
author_sort |
Mekkes, L. |
title |
Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
title_short |
Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
title_full |
Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
title_fullStr |
Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
title_full_unstemmed |
Pteropods make thinner shells in the upwelling region of the California Current Ecosystem |
title_sort |
pteropods make thinner shells in the upwelling region of the california current ecosystem |
publishDate |
2021 |
url |
https://hdl.handle.net/1887/3280141 https://doi.org/10.1038/s41598-021-81131-9 |
genre |
Limacina helicina Ocean acidification |
genre_facet |
Limacina helicina Ocean acidification |
op_source |
Scientific Reports |
op_relation |
doi:10.1038/s41598-021-81131-9 lumc-id: 120815892 https://hdl.handle.net/1887/3280141 |
op_doi |
https://doi.org/10.1038/s41598-021-81131-9 |
container_title |
Scientific Reports |
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11 |
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1 |
_version_ |
1766063599266037760 |