Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification
This work is supported by a Natural Environment Research Council PhD studentship (NE/H525303/1) Marine pCO2 enrichment via ocean acidification (OA), upwelling and release from carbon capture and storage (CCS) facilities is projected to have devastating impacts on marine biomineralisers and the servi...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/4079 2023-07-02T03:33:20+02:00 Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification Kamenos, N A Burdett, Heidi Aloisio, E Findlay, H S Martin, S Longbone, C Dunn, J Widdicombe, S Calosi, P University of St Andrews. Earth and Environmental Sciences 2013-10-15T13:31:03Z application/pdf http://hdl.handle.net/10023/4079 https://doi.org/10.1111/gcb.12351 eng eng Global Change Biology Kamenos , N A , Burdett , H , Aloisio , E , Findlay , H S , Martin , S , Longbone , C , Dunn , J , Widdicombe , S & Calosi , P 2013 , ' Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification ' , Global Change Biology , vol. 19 , no. 12 , pp. 3621-3628 . https://doi.org/10.1111/gcb.12351 1354-1013 PURE: 67968285 PURE UUID: 6ea80f03-6d81-460d-af97-40d11eafeb02 WOS: 000326836000006 Scopus: 84887458165 http://hdl.handle.net/10023/4079 https://doi.org/10.1111/gcb.12351 © 2013 John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. calcification coralline algae crustose coralline algae (CCA) maerl ocean acidification photosynthesis raman rate respiration rhodolith QK Botany GC Oceanography SDG 14 - Life Below Water QK GC Journal article 2013 ftstandrewserep https://doi.org/10.1111/gcb.12351 2023-06-13T18:30:19Z This work is supported by a Natural Environment Research Council PhD studentship (NE/H525303/1) Marine pCO2 enrichment via ocean acidification (OA), upwelling and release from carbon capture and storage (CCS) facilities is projected to have devastating impacts on marine biomineralisers and the services they provide. However, empirical studies using stable endpoint pCO2 concentrations find species exhibit variable biological and geochemical responses rather than the expected negative patterns. In addition, the carbonate chemistry of many marine systems is now being observed to be more variable than previously thought. To underpin more robust projections of future OA impacts on marine biomineralisers and their role in ecosystem service provision, we investigate coralline algal responses to realistically variable scenarios of marine pCO2 enrichment. Coralline algae are important in ecosystem function; providing habitats and nursery areas, hosting high biodiversity, stabilizing reef structures and contributing to the carbon cycle. Red coralline marine algae were exposed for 80 days to one of three pH treatments: (i) current pH (control); (ii) low pH (7.7) representing OA change; and (iii) an abrupt drop to low pH (7.7) representing the higher rates of pH change observed at natural vent systems, in areas of upwelling and during CCS releases. We demonstrate that red coralline algae respond differently to the rate and the magnitude of pH change induced by pCO2 enrichment. At low pH, coralline algae survived by increasing their calcification rates. However, when the change to low pH occurred at a fast rate we detected, using Raman spectroscopy, weaknesses in the calcite skeleton, with evidence of dissolution and molecular positional disorder. This suggests that, while coralline algae will continue to calcify, they may be structurally weakened, putting at risk the ecosystem services they provide. Notwithstanding evolutionary adaptation, the ability of coralline algae to cope with OA may thus be determined primarily by ... Article in Journal/Newspaper Ocean acidification University of St Andrews: Digital Research Repository Global Change Biology 19 12 3621 3628 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
calcification coralline algae crustose coralline algae (CCA) maerl ocean acidification photosynthesis raman rate respiration rhodolith QK Botany GC Oceanography SDG 14 - Life Below Water QK GC |
spellingShingle |
calcification coralline algae crustose coralline algae (CCA) maerl ocean acidification photosynthesis raman rate respiration rhodolith QK Botany GC Oceanography SDG 14 - Life Below Water QK GC Kamenos, N A Burdett, Heidi Aloisio, E Findlay, H S Martin, S Longbone, C Dunn, J Widdicombe, S Calosi, P Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
topic_facet |
calcification coralline algae crustose coralline algae (CCA) maerl ocean acidification photosynthesis raman rate respiration rhodolith QK Botany GC Oceanography SDG 14 - Life Below Water QK GC |
description |
This work is supported by a Natural Environment Research Council PhD studentship (NE/H525303/1) Marine pCO2 enrichment via ocean acidification (OA), upwelling and release from carbon capture and storage (CCS) facilities is projected to have devastating impacts on marine biomineralisers and the services they provide. However, empirical studies using stable endpoint pCO2 concentrations find species exhibit variable biological and geochemical responses rather than the expected negative patterns. In addition, the carbonate chemistry of many marine systems is now being observed to be more variable than previously thought. To underpin more robust projections of future OA impacts on marine biomineralisers and their role in ecosystem service provision, we investigate coralline algal responses to realistically variable scenarios of marine pCO2 enrichment. Coralline algae are important in ecosystem function; providing habitats and nursery areas, hosting high biodiversity, stabilizing reef structures and contributing to the carbon cycle. Red coralline marine algae were exposed for 80 days to one of three pH treatments: (i) current pH (control); (ii) low pH (7.7) representing OA change; and (iii) an abrupt drop to low pH (7.7) representing the higher rates of pH change observed at natural vent systems, in areas of upwelling and during CCS releases. We demonstrate that red coralline algae respond differently to the rate and the magnitude of pH change induced by pCO2 enrichment. At low pH, coralline algae survived by increasing their calcification rates. However, when the change to low pH occurred at a fast rate we detected, using Raman spectroscopy, weaknesses in the calcite skeleton, with evidence of dissolution and molecular positional disorder. This suggests that, while coralline algae will continue to calcify, they may be structurally weakened, putting at risk the ecosystem services they provide. Notwithstanding evolutionary adaptation, the ability of coralline algae to cope with OA may thus be determined primarily by ... |
author2 |
University of St Andrews. Earth and Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Kamenos, N A Burdett, Heidi Aloisio, E Findlay, H S Martin, S Longbone, C Dunn, J Widdicombe, S Calosi, P |
author_facet |
Kamenos, N A Burdett, Heidi Aloisio, E Findlay, H S Martin, S Longbone, C Dunn, J Widdicombe, S Calosi, P |
author_sort |
Kamenos, N A |
title |
Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
title_short |
Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
title_full |
Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
title_fullStr |
Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
title_full_unstemmed |
Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
title_sort |
coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification |
publishDate |
2013 |
url |
http://hdl.handle.net/10023/4079 https://doi.org/10.1111/gcb.12351 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Global Change Biology Kamenos , N A , Burdett , H , Aloisio , E , Findlay , H S , Martin , S , Longbone , C , Dunn , J , Widdicombe , S & Calosi , P 2013 , ' Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification ' , Global Change Biology , vol. 19 , no. 12 , pp. 3621-3628 . https://doi.org/10.1111/gcb.12351 1354-1013 PURE: 67968285 PURE UUID: 6ea80f03-6d81-460d-af97-40d11eafeb02 WOS: 000326836000006 Scopus: 84887458165 http://hdl.handle.net/10023/4079 https://doi.org/10.1111/gcb.12351 |
op_rights |
© 2013 John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_doi |
https://doi.org/10.1111/gcb.12351 |
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Global Change Biology |
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19 |
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12 |
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3621 |
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3628 |
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