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Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species

Rising atmospheric CO(2) shifts the marine inorganic carbonate system and decreases seawater pH, a process often abbreviated to ‘ocean acidification’. Since acidification decreases the saturation state for crystalline calcium carbonate (e.g., calcite and aragonite), rising dissolved CO(2) levels wil...

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Autores principales: Dämmer, Linda Karoline, Ivkić, Angelina, de Nooijer, Lennart, Renema, Willem, Webb, Alice E., Reichart, Gert-Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10431644/
https://www.ncbi.nlm.nih.gov/pubmed/37585361
http://dx.doi.org/10.1371/journal.pone.0289122
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author Dämmer, Linda Karoline
Ivkić, Angelina
de Nooijer, Lennart
Renema, Willem
Webb, Alice E.
Reichart, Gert-Jan
author_facet Dämmer, Linda Karoline
Ivkić, Angelina
de Nooijer, Lennart
Renema, Willem
Webb, Alice E.
Reichart, Gert-Jan
author_sort Dämmer, Linda Karoline
collection PubMed
description Rising atmospheric CO(2) shifts the marine inorganic carbonate system and decreases seawater pH, a process often abbreviated to ‘ocean acidification’. Since acidification decreases the saturation state for crystalline calcium carbonate (e.g., calcite and aragonite), rising dissolved CO(2) levels will either increase the energy demand for calcification or reduce the total amount of CaCO(3) precipitated. Here we report growth of two large benthic photosymbiont-bearing foraminifera, Heterostegina depressa and Amphistegina lessonii, cultured at four different ocean acidification scenarios (400, 700, 1000 and 2200 ppm atmospheric pCO(2)). Using the alkalinity anomaly technique, we calculated the amount of calcium carbonate precipitated during the incubation and found that both species produced the most carbonate at intermediate CO(2) levels. The chamber addition rates for each of the conditions were also determined and matched the changes in alkalinity. These results were complemented by micro-CT scanning of selected specimens to visualize the effect of CO(2) on growth. The increased chamber addition rates at elevated CO(2) concentrations suggest that both foraminifera species can take advantage of the increased availability of the inorganic carbon, despite a lower saturation state. This adds to the growing number of reports showing the variable response of foraminifera to elevated CO(2) concentrations, which is likely a consequence of differences in calcification mechanisms.
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spelling pubmed-104316442023-08-17 Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species Dämmer, Linda Karoline Ivkić, Angelina de Nooijer, Lennart Renema, Willem Webb, Alice E. Reichart, Gert-Jan PLoS One Research Article Rising atmospheric CO(2) shifts the marine inorganic carbonate system and decreases seawater pH, a process often abbreviated to ‘ocean acidification’. Since acidification decreases the saturation state for crystalline calcium carbonate (e.g., calcite and aragonite), rising dissolved CO(2) levels will either increase the energy demand for calcification or reduce the total amount of CaCO(3) precipitated. Here we report growth of two large benthic photosymbiont-bearing foraminifera, Heterostegina depressa and Amphistegina lessonii, cultured at four different ocean acidification scenarios (400, 700, 1000 and 2200 ppm atmospheric pCO(2)). Using the alkalinity anomaly technique, we calculated the amount of calcium carbonate precipitated during the incubation and found that both species produced the most carbonate at intermediate CO(2) levels. The chamber addition rates for each of the conditions were also determined and matched the changes in alkalinity. These results were complemented by micro-CT scanning of selected specimens to visualize the effect of CO(2) on growth. The increased chamber addition rates at elevated CO(2) concentrations suggest that both foraminifera species can take advantage of the increased availability of the inorganic carbon, despite a lower saturation state. This adds to the growing number of reports showing the variable response of foraminifera to elevated CO(2) concentrations, which is likely a consequence of differences in calcification mechanisms. Public Library of Science 2023-08-16 /pmc/articles/PMC10431644/ /pubmed/37585361 http://dx.doi.org/10.1371/journal.pone.0289122 Text en © 2023 Dämmer et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Dämmer, Linda Karoline
Ivkić, Angelina
de Nooijer, Lennart
Renema, Willem
Webb, Alice E.
Reichart, Gert-Jan
Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title_full Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title_fullStr Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title_full_unstemmed Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title_short Impact of dissolved CO(2) on calcification in two large, benthic foraminiferal species
title_sort impact of dissolved co(2) on calcification in two large, benthic foraminiferal species
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10431644/
https://www.ncbi.nlm.nih.gov/pubmed/37585361
http://dx.doi.org/10.1371/journal.pone.0289122
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