Ocean acidification weakens the structural integrity of coralline algae
The uptake of anthropogenic emission of carbon dioxide is resulting in a lowering of the carbonate saturation state and a drop in ocean pH. Understanding how marine calcifying organisms such as coralline algae may acclimatize to ocean acidification is important to understand their survival over the...
Published in: | Global Change Biology |
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ftoceanrep:oai:oceanrep.geomar.de:14784 2023-05-15T17:50:24+02:00 Ocean acidification weakens the structural integrity of coralline algae Ragazzola, Federica Foster, Laura C. Form, Armin Anderson, Philip S. L. Hansteen, Thor H. Fietzke, Jan 2012 text https://oceanrep.geomar.de/id/eprint/14784/ https://oceanrep.geomar.de/id/eprint/14784/7/Ragazzola_et_al%202012GCB.pdf https://doi.org/10.1111/j.1365-2486.2012.02756.x en eng Wiley https://oceanrep.geomar.de/id/eprint/14784/7/Ragazzola_et_al%202012GCB.pdf Ragazzola, F., Foster, L. C., Form, A., Anderson, P. S. L., Hansteen, T. H. and Fietzke, J. (2012) Ocean acidification weakens the structural integrity of coralline algae. Global Change Biology, 18 (9). pp. 2804-2812. DOI 10.1111/j.1365-2486.2012.02756.x <https://doi.org/10.1111/j.1365-2486.2012.02756.x>. doi:10.1111/j.1365-2486.2012.02756.x info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1111/j.1365-2486.2012.02756.x 2023-04-07T15:04:20Z The uptake of anthropogenic emission of carbon dioxide is resulting in a lowering of the carbonate saturation state and a drop in ocean pH. Understanding how marine calcifying organisms such as coralline algae may acclimatize to ocean acidification is important to understand their survival over the coming century. We present the first long-term perturbation experiment on the cold-water coralline algae, which are important marine calcifiers in the benthic ecosystems particularly at the higher latitudes. Lithothamnion glaciale, after three months incubation, continued to calcify even in undersaturated conditions with a significant trend towards lower growth rates with increasing pCO2. However, the major changes in the ultra-structure occur by 589 μatm (i.e. in saturated waters). Finite element models of the algae grown at these heightened levels show an increase in the total strain energy of nearly an order of magnitude and an uneven distribution of the stress inside the skeleton when subjected to similar loads as algae grown at ambient levels. This weakening of the structure is likely to reduce the ability of the alga to resist boring by predators and wave energy with severe consequences to the benthic community structure in the immediate future (50 years). Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Global Change Biology 18 9 2804 2812 |
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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 |
The uptake of anthropogenic emission of carbon dioxide is resulting in a lowering of the carbonate saturation state and a drop in ocean pH. Understanding how marine calcifying organisms such as coralline algae may acclimatize to ocean acidification is important to understand their survival over the coming century. We present the first long-term perturbation experiment on the cold-water coralline algae, which are important marine calcifiers in the benthic ecosystems particularly at the higher latitudes. Lithothamnion glaciale, after three months incubation, continued to calcify even in undersaturated conditions with a significant trend towards lower growth rates with increasing pCO2. However, the major changes in the ultra-structure occur by 589 μatm (i.e. in saturated waters). Finite element models of the algae grown at these heightened levels show an increase in the total strain energy of nearly an order of magnitude and an uneven distribution of the stress inside the skeleton when subjected to similar loads as algae grown at ambient levels. This weakening of the structure is likely to reduce the ability of the alga to resist boring by predators and wave energy with severe consequences to the benthic community structure in the immediate future (50 years). |
format |
Article in Journal/Newspaper |
author |
Ragazzola, Federica Foster, Laura C. Form, Armin Anderson, Philip S. L. Hansteen, Thor H. Fietzke, Jan |
spellingShingle |
Ragazzola, Federica Foster, Laura C. Form, Armin Anderson, Philip S. L. Hansteen, Thor H. Fietzke, Jan Ocean acidification weakens the structural integrity of coralline algae |
author_facet |
Ragazzola, Federica Foster, Laura C. Form, Armin Anderson, Philip S. L. Hansteen, Thor H. Fietzke, Jan |
author_sort |
Ragazzola, Federica |
title |
Ocean acidification weakens the structural integrity of coralline algae |
title_short |
Ocean acidification weakens the structural integrity of coralline algae |
title_full |
Ocean acidification weakens the structural integrity of coralline algae |
title_fullStr |
Ocean acidification weakens the structural integrity of coralline algae |
title_full_unstemmed |
Ocean acidification weakens the structural integrity of coralline algae |
title_sort |
ocean acidification weakens the structural integrity of coralline algae |
publisher |
Wiley |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/14784/ https://oceanrep.geomar.de/id/eprint/14784/7/Ragazzola_et_al%202012GCB.pdf https://doi.org/10.1111/j.1365-2486.2012.02756.x |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/14784/7/Ragazzola_et_al%202012GCB.pdf Ragazzola, F., Foster, L. C., Form, A., Anderson, P. S. L., Hansteen, T. H. and Fietzke, J. (2012) Ocean acidification weakens the structural integrity of coralline algae. Global Change Biology, 18 (9). pp. 2804-2812. DOI 10.1111/j.1365-2486.2012.02756.x <https://doi.org/10.1111/j.1365-2486.2012.02756.x>. doi:10.1111/j.1365-2486.2012.02756.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-2486.2012.02756.x |
container_title |
Global Change Biology |
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18 |
container_issue |
9 |
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2804 |
op_container_end_page |
2812 |
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1766157120291471360 |