The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia)
Biogenic dissolution of carbonates by microborers is one of the main destructive forces in coral reefs and is predicted to be enhanced by eutrophication and ocean acidification by 2100. The chlorophyte Ostreobium sp., the main agent of this process, has been reported to be one of the most responsive...
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ftird:oai:ird.fr:fdi:010065268 2023-05-15T17:51:49+02:00 The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) Grange, J. S. Rybarczyk, H. Tribollet, Aline NOUVELLE CALEDONIE 2015 http://www.documentation.ird.fr/hor/fdi:010065268 EN eng http://www.documentation.ird.fr/hor/fdi:010065268 oai:ird.fr:fdi:010065268 Grange J. S., Rybarczyk H., Tribollet Aline. The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia). Environmental Science and Pollution Research, 2015, 22 (18), p. 13625-13637. Microbioerosion dynamics Biogenic dissolution of calcium carbonate Euendoliths Succession of microboring communities Coral reefs New Caledonia text 2015 ftird 2020-08-21T06:52:26Z Biogenic dissolution of carbonates by microborers is one of the main destructive forces in coral reefs and is predicted to be enhanced by eutrophication and ocean acidification by 2100. The chlorophyte Ostreobium sp., the main agent of this process, has been reported to be one of the most responsive of all microboring species to those environmental factors. However, very little is known about its recruitment, how it develops over successions of microboring communities, and how that influences rates of biogenic dissolution. Thus, an experiment with dead coral blocks exposed to colonization by microborers was carried out on a reef in New Caledonia over a year period. Each month, a few blocks were collected to study microboring communities and the associated rates of biogenic dissolution. Our results showed a drastic shift in community species composition between the 4th and 5th months of exposure, i.e., pioneer communities dominated by large chlorophytes such as Phaeophila sp. were replaced by mature communities dominated by Ostreobium sp. Prior the 4th month of exposure, large chlorophytes were responsible for low rates of biogenic dissolution while during the community shift, rates increased exponentially (x10). After 6 months of exposure, rates slowed down and reached a "plateau" with a mean of 0.93 kg of CaCO3 dissolved per m(2) of reef after 12 months of exposure. Here, we show that (a) Ostreobium sp. settled down in new dead substrates as soon as the 3rd month of exposure but dominated communities only after 5 months of exposure and (b) microbioerosion dynamics comprise three distinct steps which fully depend on community development stage and grazing pressure. Text Ocean acidification IRD (Institute de recherche pour le développement): Horizon |
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IRD (Institute de recherche pour le développement): Horizon |
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language |
English |
topic |
Microbioerosion dynamics Biogenic dissolution of calcium carbonate Euendoliths Succession of microboring communities Coral reefs New Caledonia |
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Microbioerosion dynamics Biogenic dissolution of calcium carbonate Euendoliths Succession of microboring communities Coral reefs New Caledonia Grange, J. S. Rybarczyk, H. Tribollet, Aline The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
topic_facet |
Microbioerosion dynamics Biogenic dissolution of calcium carbonate Euendoliths Succession of microboring communities Coral reefs New Caledonia |
description |
Biogenic dissolution of carbonates by microborers is one of the main destructive forces in coral reefs and is predicted to be enhanced by eutrophication and ocean acidification by 2100. The chlorophyte Ostreobium sp., the main agent of this process, has been reported to be one of the most responsive of all microboring species to those environmental factors. However, very little is known about its recruitment, how it develops over successions of microboring communities, and how that influences rates of biogenic dissolution. Thus, an experiment with dead coral blocks exposed to colonization by microborers was carried out on a reef in New Caledonia over a year period. Each month, a few blocks were collected to study microboring communities and the associated rates of biogenic dissolution. Our results showed a drastic shift in community species composition between the 4th and 5th months of exposure, i.e., pioneer communities dominated by large chlorophytes such as Phaeophila sp. were replaced by mature communities dominated by Ostreobium sp. Prior the 4th month of exposure, large chlorophytes were responsible for low rates of biogenic dissolution while during the community shift, rates increased exponentially (x10). After 6 months of exposure, rates slowed down and reached a "plateau" with a mean of 0.93 kg of CaCO3 dissolved per m(2) of reef after 12 months of exposure. Here, we show that (a) Ostreobium sp. settled down in new dead substrates as soon as the 3rd month of exposure but dominated communities only after 5 months of exposure and (b) microbioerosion dynamics comprise three distinct steps which fully depend on community development stage and grazing pressure. |
format |
Text |
author |
Grange, J. S. Rybarczyk, H. Tribollet, Aline |
author_facet |
Grange, J. S. Rybarczyk, H. Tribollet, Aline |
author_sort |
Grange, J. S. |
title |
The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
title_short |
The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
title_full |
The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
title_fullStr |
The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
title_full_unstemmed |
The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia) |
title_sort |
three steps of the carbonate biogenic dissolution process by microborers in coral reefs (new caledonia) |
publishDate |
2015 |
url |
http://www.documentation.ird.fr/hor/fdi:010065268 |
op_coverage |
NOUVELLE CALEDONIE |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010065268 oai:ird.fr:fdi:010065268 Grange J. S., Rybarczyk H., Tribollet Aline. The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia). Environmental Science and Pollution Research, 2015, 22 (18), p. 13625-13637. |
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