Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response
Major questions surround the species-specific nature of coccolithophore calcification in response to rising atmospheric CO2 levels. Here we present CaCO3 particle volume distribution data from the coccolith size-fraction of a rapidly accumulating North Atlantic sediment core. Without direct volume m...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal article |
| Language: | English |
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Copernicus Publications
2008
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| _version_ | 1826280332674990080 |
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| author | Halloran, P Hall, I Colmenero-Hidalgo, E Rickaby, R |
| author2 | European Geosciences Union |
| author_facet | European Geosciences Union Halloran, P Hall, I Colmenero-Hidalgo, E Rickaby, R |
| author_sort | Halloran, P |
| collection | OXFORD |
| description | Major questions surround the species-specific nature of coccolithophore calcification in response to rising atmospheric CO2 levels. Here we present CaCO3 particle volume distribution data from the coccolith size-fraction of a rapidly accumulating North Atlantic sediment core. Without direct volume measurements on coccoliths produced by individual coccolithophore species, and knowledge of organic, as well as inorganic carbon production, it is not possible to state conclusively the coccolithophore calcification change at this site. However, by analysing the size distribution of CaCO3 particles in the less than 10 μm sediment fraction, we demonstrate a changing particle volume since the late 20th Century consistent with an increase in the mass of coccoliths produced by the larger coccolithophore species, and potentially a decrease in mass of coccoliths produced by the smaller species, present at this location. This finding has significant implications for the realistic representation of an assemblage-wide coccolithophore CO2-calcification response in numerical models. |
| first_indexed | 2024-03-07T00:12:07Z |
| format | Journal article |
| id | oxford-uuid:7998bebc-9e1e-4306-8c25-14157b66fdd6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:12:07Z |
| publishDate | 2008 |
| publisher | Copernicus Publications |
| record_format | dspace |
| spelling | oxford-uuid:7998bebc-9e1e-4306-8c25-14157b66fdd62022-03-26T20:38:24ZEvidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification responseJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7998bebc-9e1e-4306-8c25-14157b66fdd6Earth sciencesEnglishOxford University Research Archive - ValetCopernicus Publications2008Halloran, PHall, IColmenero-Hidalgo, ERickaby, REuropean Geosciences UnionMajor questions surround the species-specific nature of coccolithophore calcification in response to rising atmospheric CO2 levels. Here we present CaCO3 particle volume distribution data from the coccolith size-fraction of a rapidly accumulating North Atlantic sediment core. Without direct volume measurements on coccoliths produced by individual coccolithophore species, and knowledge of organic, as well as inorganic carbon production, it is not possible to state conclusively the coccolithophore calcification change at this site. However, by analysing the size distribution of CaCO3 particles in the less than 10 μm sediment fraction, we demonstrate a changing particle volume since the late 20th Century consistent with an increase in the mass of coccoliths produced by the larger coccolithophore species, and potentially a decrease in mass of coccoliths produced by the smaller species, present at this location. This finding has significant implications for the realistic representation of an assemblage-wide coccolithophore CO2-calcification response in numerical models. |
| spellingShingle | Earth sciences Halloran, P Hall, I Colmenero-Hidalgo, E Rickaby, R Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title | Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title_full | Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title_fullStr | Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title_full_unstemmed | Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title_short | Evidence for a multi-species coccolith volume change over the past two centuries: understanding a potential ocean acidification response |
| title_sort | evidence for a multi species coccolith volume change over the past two centuries understanding a potential ocean acidification response |
| topic | Earth sciences |
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