Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion
Abstract Physiological sensitivity of cold‐water corals to ocean change is far less understood than of tropical corals and very little is known about the impacts of ocean acidification and warming on degradative processes of dead coral framework. In a 13‐month laboratory experiment, we examined the...
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crwiley:10.1002/lno.12217 2024-06-02T08:10:11+00:00 Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion Büscher, Janina Vanessa Form, Armin Uwe Wisshak, Max Kiko, Rainer Riebesell, Ulf Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft Agence Nationale de la Recherche 2022 http://dx.doi.org/10.1002/lno.12217 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12217 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.12217 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12217 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 67, issue 11, page 2497-2515 ISSN 0024-3590 1939-5590 journal-article 2022 crwiley https://doi.org/10.1002/lno.12217 2024-05-03T11:07:20Z Abstract Physiological sensitivity of cold‐water corals to ocean change is far less understood than of tropical corals and very little is known about the impacts of ocean acidification and warming on degradative processes of dead coral framework. In a 13‐month laboratory experiment, we examined the interactive effects of gradually increasing temperature and p CO 2 levels on survival, growth, and respiration of two prominent color morphotypes (colormorphs) of the framework‐forming cold‐water coral Lophelia pertusa , as well as bioerosion and dissolution of dead framework. Calcification rates tended to increase with warming, showing temperature optima at ~ 14°C (white colormorph) and 10–12°C (orange colormorph) and decreased with increasing p CO 2 . Net dissolution occurred at aragonite undersaturation (Ω Ar < 1) at ~ 1000 μ atm p CO 2 . Under combined warming and acidification, the negative effects of acidification on growth were initially mitigated, but at ~ 1600 μ atm dissolution prevailed. Respiration rates increased with warming, more strongly in orange corals, while acidification slightly suppressed respiration. Calcification and respiration rates as well as polyp mortality were consistently higher in orange corals. Mortality increased considerably at 14–15°C in both colormorphs. Bioerosion/dissolution of dead framework was not affected by warming alone but was significantly enhanced by acidification. While live corals may cope with intermediate levels of elevated p CO 2 and temperature, long‐term impacts beyond levels projected for the end of this century will likely lead to skeletal dissolution and increased mortality. Our findings further suggest that acidification causes accelerated degradation of dead framework even at aragonite saturated conditions, which will eventually compromise the structural integrity of cold‐water coral reefs. Article in Journal/Newspaper Lophelia pertusa Ocean acidification Wiley Online Library Limnology and Oceanography 67 11 2497 2515 |
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English |
description |
Abstract Physiological sensitivity of cold‐water corals to ocean change is far less understood than of tropical corals and very little is known about the impacts of ocean acidification and warming on degradative processes of dead coral framework. In a 13‐month laboratory experiment, we examined the interactive effects of gradually increasing temperature and p CO 2 levels on survival, growth, and respiration of two prominent color morphotypes (colormorphs) of the framework‐forming cold‐water coral Lophelia pertusa , as well as bioerosion and dissolution of dead framework. Calcification rates tended to increase with warming, showing temperature optima at ~ 14°C (white colormorph) and 10–12°C (orange colormorph) and decreased with increasing p CO 2 . Net dissolution occurred at aragonite undersaturation (Ω Ar < 1) at ~ 1000 μ atm p CO 2 . Under combined warming and acidification, the negative effects of acidification on growth were initially mitigated, but at ~ 1600 μ atm dissolution prevailed. Respiration rates increased with warming, more strongly in orange corals, while acidification slightly suppressed respiration. Calcification and respiration rates as well as polyp mortality were consistently higher in orange corals. Mortality increased considerably at 14–15°C in both colormorphs. Bioerosion/dissolution of dead framework was not affected by warming alone but was significantly enhanced by acidification. While live corals may cope with intermediate levels of elevated p CO 2 and temperature, long‐term impacts beyond levels projected for the end of this century will likely lead to skeletal dissolution and increased mortality. Our findings further suggest that acidification causes accelerated degradation of dead framework even at aragonite saturated conditions, which will eventually compromise the structural integrity of cold‐water coral reefs. |
author2 |
Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft Agence Nationale de la Recherche |
format |
Article in Journal/Newspaper |
author |
Büscher, Janina Vanessa Form, Armin Uwe Wisshak, Max Kiko, Rainer Riebesell, Ulf |
spellingShingle |
Büscher, Janina Vanessa Form, Armin Uwe Wisshak, Max Kiko, Rainer Riebesell, Ulf Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
author_facet |
Büscher, Janina Vanessa Form, Armin Uwe Wisshak, Max Kiko, Rainer Riebesell, Ulf |
author_sort |
Büscher, Janina Vanessa |
title |
Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
title_short |
Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
title_full |
Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
title_fullStr |
Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
title_full_unstemmed |
Cold‐water coral ecosystems under future ocean change: Live coral performance vs. framework dissolution and bioerosion |
title_sort |
cold‐water coral ecosystems under future ocean change: live coral performance vs. framework dissolution and bioerosion |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/lno.12217 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12217 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.12217 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12217 |
genre |
Lophelia pertusa Ocean acidification |
genre_facet |
Lophelia pertusa Ocean acidification |
op_source |
Limnology and Oceanography volume 67, issue 11, page 2497-2515 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.12217 |
container_title |
Limnology and Oceanography |
container_volume |
67 |
container_issue |
11 |
container_start_page |
2497 |
op_container_end_page |
2515 |
_version_ |
1800756011819073536 |