Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2
Rising atmospheric CO2 concentrations could cause a calcium carbonate subsaturation of Arctic surface waters in the next 20 yr, making these waters corrosive for calcareous organisms. It is presently unknown what effects this will have on Arctic calcifying organisms and the ecosystems of which they...
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Inter Research
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Online Access: | https://oceanrep.geomar.de/id/eprint/12662/ https://oceanrep.geomar.de/id/eprint/12662/1/m441p079.pdf https://doi.org/10.3354/meps09405 |
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ftoceanrep:oai:oceanrep.geomar.de:12662 2023-05-15T14:25:50+02:00 Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 Büdenbender, Jan Riebesell, Ulf Form, Armin 2011 text https://oceanrep.geomar.de/id/eprint/12662/ https://oceanrep.geomar.de/id/eprint/12662/1/m441p079.pdf https://doi.org/10.3354/meps09405 en eng Inter Research https://oceanrep.geomar.de/id/eprint/12662/1/m441p079.pdf Büdenbender, J., Riebesell, U. and Form, A. (2011) Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2. Open Access Marine Ecology Progress Series, 441 . pp. 79-87. DOI 10.3354/meps09405 <https://doi.org/10.3354/meps09405>. doi:10.3354/meps09405 info:eu-repo/semantics/openAccess Article PeerReviewed 2011 ftoceanrep https://doi.org/10.3354/meps09405 2023-04-07T15:01:05Z Rising atmospheric CO2 concentrations could cause a calcium carbonate subsaturation of Arctic surface waters in the next 20 yr, making these waters corrosive for calcareous organisms. It is presently unknown what effects this will have on Arctic calcifying organisms and the ecosystems of which they are integral components. So far, acidification effects on crustose coralline red algae (CCA) have only been studied in tropical and Mediterranean species. In this work, we investigated calcification rates of the CCA Lithothamnion glaciale collected in northwest Svalbard in laboratory experiments under future atmospheric CO2 concentrations. The algae were exposed to simulated Arctic summer and winter light conditions in 2 separate experiments at optimum growth temperatures. We found a significant negative effect of increased CO2 levels on the net calcification rates of L. glaciale in both experiments. Annual mean net dissolution of L. glaciale was estimated to start at an aragonite saturation state between 1.1 and 0.9 which is projected to occur in parts of the Arctic surface ocean between 2030 and 2050 if emissions follow ‘business as usual’ scenarios (SRES A2; IPCC 2007). The massive skeleton of CCA, which consist of more than 80% calcium carbonate, is considered crucial to withstanding natural stresses such as water movement, overgrowth or grazing. The observed strong negative response of this Arctic CCA to increased CO2 levels suggests severe threats of the projected ocean acidification for an important habitat provider in the Arctic coastal ocean. Article in Journal/Newspaper Arctic Arctic Ocean acidification Svalbard OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Svalbard Marine Ecology Progress Series 441 79 87 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Rising atmospheric CO2 concentrations could cause a calcium carbonate subsaturation of Arctic surface waters in the next 20 yr, making these waters corrosive for calcareous organisms. It is presently unknown what effects this will have on Arctic calcifying organisms and the ecosystems of which they are integral components. So far, acidification effects on crustose coralline red algae (CCA) have only been studied in tropical and Mediterranean species. In this work, we investigated calcification rates of the CCA Lithothamnion glaciale collected in northwest Svalbard in laboratory experiments under future atmospheric CO2 concentrations. The algae were exposed to simulated Arctic summer and winter light conditions in 2 separate experiments at optimum growth temperatures. We found a significant negative effect of increased CO2 levels on the net calcification rates of L. glaciale in both experiments. Annual mean net dissolution of L. glaciale was estimated to start at an aragonite saturation state between 1.1 and 0.9 which is projected to occur in parts of the Arctic surface ocean between 2030 and 2050 if emissions follow ‘business as usual’ scenarios (SRES A2; IPCC 2007). The massive skeleton of CCA, which consist of more than 80% calcium carbonate, is considered crucial to withstanding natural stresses such as water movement, overgrowth or grazing. The observed strong negative response of this Arctic CCA to increased CO2 levels suggests severe threats of the projected ocean acidification for an important habitat provider in the Arctic coastal ocean. |
format |
Article in Journal/Newspaper |
author |
Büdenbender, Jan Riebesell, Ulf Form, Armin |
spellingShingle |
Büdenbender, Jan Riebesell, Ulf Form, Armin Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
author_facet |
Büdenbender, Jan Riebesell, Ulf Form, Armin |
author_sort |
Büdenbender, Jan |
title |
Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
title_short |
Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
title_full |
Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
title_fullStr |
Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
title_full_unstemmed |
Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2 |
title_sort |
calcification of the arctic coralline red algae lithothamnion glaciale in response to elevated co2 |
publisher |
Inter Research |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/12662/ https://oceanrep.geomar.de/id/eprint/12662/1/m441p079.pdf https://doi.org/10.3354/meps09405 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Ocean acidification Svalbard |
genre_facet |
Arctic Arctic Ocean acidification Svalbard |
op_relation |
https://oceanrep.geomar.de/id/eprint/12662/1/m441p079.pdf Büdenbender, J., Riebesell, U. and Form, A. (2011) Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2. Open Access Marine Ecology Progress Series, 441 . pp. 79-87. DOI 10.3354/meps09405 <https://doi.org/10.3354/meps09405>. doi:10.3354/meps09405 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps09405 |
container_title |
Marine Ecology Progress Series |
container_volume |
441 |
container_start_page |
79 |
op_container_end_page |
87 |
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1766298293919285248 |