Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient
A natural pH gradient caused by marine CO2 seeps off Vulcano Island (Italy) was used to assess the effects of ocean acidification on coccolithophores, which are abundant planktonic unicellular calcifiers. Such seeps are used as natural laboratories to study the effects of ocean acidification on mari...
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ftird:oai:ird.fr:fdi:010062569 2023-05-15T17:49:42+02:00 Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient Ziveri, P. Passaro, M. Incarbona, A. Milazzo, M. Rodolfo-Metalpa, Riccardo Hall-Spencer, J. M. MEDITERRANEE ITALIE 2014 http://www.documentation.ird.fr/hor/fdi:010062569 EN eng http://www.documentation.ird.fr/hor/fdi:010062569 oai:ird.fr:fdi:010062569 Ziveri P., Passaro M., Incarbona A., Milazzo M., Rodolfo-Metalpa Riccardo, Hall-Spencer J. M. Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient. Biological Bulletin, 2014, 226 (3), p. 282-290. text 2014 ftird 2020-08-21T06:53:24Z A natural pH gradient caused by marine CO2 seeps off Vulcano Island (Italy) was used to assess the effects of ocean acidification on coccolithophores, which are abundant planktonic unicellular calcifiers. Such seeps are used as natural laboratories to study the effects of ocean acidification on marine ecosystems, since they cause long-term changes in seawater carbonate chemistry and pH, exposing the organisms to elevated CO2 concentrations and therefore mimicking future scenarios. Previous work at CO2 seeps has focused exclusively on benthic organisms. Here we show progressive depletion of 27 coccolithophore species, in terms of cell concentrations and diversity, along a calcite saturation gradient from Omega(calcite) 6.4 to <1. Water collected close to the main CO2 seeps had the highest concentrations of malformed Emiliania huxleyi. These observations add to a growing body of evidence that ocean acidification may benefit some algae but will likely cause marine biodiversity loss, especially by impacting calcifying species, which are affected as carbonate saturation falls. 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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English |
description |
A natural pH gradient caused by marine CO2 seeps off Vulcano Island (Italy) was used to assess the effects of ocean acidification on coccolithophores, which are abundant planktonic unicellular calcifiers. Such seeps are used as natural laboratories to study the effects of ocean acidification on marine ecosystems, since they cause long-term changes in seawater carbonate chemistry and pH, exposing the organisms to elevated CO2 concentrations and therefore mimicking future scenarios. Previous work at CO2 seeps has focused exclusively on benthic organisms. Here we show progressive depletion of 27 coccolithophore species, in terms of cell concentrations and diversity, along a calcite saturation gradient from Omega(calcite) 6.4 to <1. Water collected close to the main CO2 seeps had the highest concentrations of malformed Emiliania huxleyi. These observations add to a growing body of evidence that ocean acidification may benefit some algae but will likely cause marine biodiversity loss, especially by impacting calcifying species, which are affected as carbonate saturation falls. |
format |
Text |
author |
Ziveri, P. Passaro, M. Incarbona, A. Milazzo, M. Rodolfo-Metalpa, Riccardo Hall-Spencer, J. M. |
spellingShingle |
Ziveri, P. Passaro, M. Incarbona, A. Milazzo, M. Rodolfo-Metalpa, Riccardo Hall-Spencer, J. M. Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
author_facet |
Ziveri, P. Passaro, M. Incarbona, A. Milazzo, M. Rodolfo-Metalpa, Riccardo Hall-Spencer, J. M. |
author_sort |
Ziveri, P. |
title |
Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
title_short |
Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
title_full |
Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
title_fullStr |
Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
title_full_unstemmed |
Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient |
title_sort |
decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural co2 gradient |
publishDate |
2014 |
url |
http://www.documentation.ird.fr/hor/fdi:010062569 |
op_coverage |
MEDITERRANEE ITALIE |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010062569 oai:ird.fr:fdi:010062569 Ziveri P., Passaro M., Incarbona A., Milazzo M., Rodolfo-Metalpa Riccardo, Hall-Spencer J. M. Decline in coccolithophore diversity and impact on coccolith morphogenesis along a natural CO2 gradient. Biological Bulletin, 2014, 226 (3), p. 282-290. |
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