Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size
The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppmV CO2, 380 ppmV CO 2 and 750 ppmV CO2 corresponding to...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/124524 2023-05-15T17:50:42+02:00 Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size De Bodt, Caroline Van Oostende, Nicolas Harlay, Jérôme Sabbe, Koen Chou, Lei 2010 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124524 https://dipot.ulb.ac.be/dspace/bitstream/2013/124524/3/doi_105914.pdf en eng uri/info:doi/10.5194/bg-7-1401-2010 uri/info:scp/77952000360 https://dipot.ulb.ac.be/dspace/bitstream/2013/124524/3/doi_105914.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124524 1 full-text file(s): info:eu-repo/semantics/openAccess Biogeosciences, 7 (5 Environnement et pollution Océanographie physique et chimique info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2010 ftunivbruxelles 2022-06-12T20:50:25Z The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppmV CO2, 380 ppmV CO 2 and 750 ppmV CO2 corresponding to past, present and future CO2 conditions, respectively) and temperature (13 °C and 18 °C) during the exponential growth phase of the coccolithophore E. huxleyi using batch culture experiments. We showed that cellular production rate of Particulate Organic Carbon (POC) increased from the present to the future CO2 treatments at 13 deg;C. A significant effect of pCO2 and of temperature on calcification was found, manifesting itself in a lower cellular production rate of Particulate Inorganic Carbon (PIC) as well as a lower PIC: POC ratio at future CO2 levels and at 18 °C. Coccosphere-sized particles showed a size reduction with both increasing temperature and CO 2 concentration. The influence of the different treatments on coccolith morphology was studied by categorizing SEM coccolith micrographs. The number of well-formed coccoliths decreased with increasing pCO 2 while temperature did not have a significant impact on coccolith morphology. No interacting effects of pCO2 and temperature were observed on calcite production, coccolith morphology or on coccosphere size. Finally, our results suggest that ocean acidification might have a larger adverse impact on coccolithophorid calcification than surface water warming. © Author(s) 2010. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Ocean acidification DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Environnement et pollution Océanographie physique et chimique |
spellingShingle |
Environnement et pollution Océanographie physique et chimique De Bodt, Caroline Van Oostende, Nicolas Harlay, Jérôme Sabbe, Koen Chou, Lei Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
topic_facet |
Environnement et pollution Océanographie physique et chimique |
description |
The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppmV CO2, 380 ppmV CO 2 and 750 ppmV CO2 corresponding to past, present and future CO2 conditions, respectively) and temperature (13 °C and 18 °C) during the exponential growth phase of the coccolithophore E. huxleyi using batch culture experiments. We showed that cellular production rate of Particulate Organic Carbon (POC) increased from the present to the future CO2 treatments at 13 deg;C. A significant effect of pCO2 and of temperature on calcification was found, manifesting itself in a lower cellular production rate of Particulate Inorganic Carbon (PIC) as well as a lower PIC: POC ratio at future CO2 levels and at 18 °C. Coccosphere-sized particles showed a size reduction with both increasing temperature and CO 2 concentration. The influence of the different treatments on coccolith morphology was studied by categorizing SEM coccolith micrographs. The number of well-formed coccoliths decreased with increasing pCO 2 while temperature did not have a significant impact on coccolith morphology. No interacting effects of pCO2 and temperature were observed on calcite production, coccolith morphology or on coccosphere size. Finally, our results suggest that ocean acidification might have a larger adverse impact on coccolithophorid calcification than surface water warming. © Author(s) 2010. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
De Bodt, Caroline Van Oostende, Nicolas Harlay, Jérôme Sabbe, Koen Chou, Lei |
author_facet |
De Bodt, Caroline Van Oostende, Nicolas Harlay, Jérôme Sabbe, Koen Chou, Lei |
author_sort |
De Bodt, Caroline |
title |
Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
title_short |
Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
title_full |
Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
title_fullStr |
Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
title_full_unstemmed |
Individual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
title_sort |
individual and interacting effects of pco2 and temperature on emiliania huxleyi calcification: study of the calcite production, the coccolith morphology and the coccosphere size |
publishDate |
2010 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124524 https://dipot.ulb.ac.be/dspace/bitstream/2013/124524/3/doi_105914.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, 7 (5 |
op_relation |
uri/info:doi/10.5194/bg-7-1401-2010 uri/info:scp/77952000360 https://dipot.ulb.ac.be/dspace/bitstream/2013/124524/3/doi_105914.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124524 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766157570477654016 |