Does a ballast effect occur in the surface ocean?

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dc.contributor.authorSanders, Richard
dc.contributor.authorMorris, Paul J
dc.contributor.authorPoulton, Alex J
dc.contributor.authorStinchcombe, Mark C
dc.contributor.authorCharalampopoulou, Anastasia
dc.contributor.authorLucas, Mike I
dc.contributor.authorThomalla, Sandy J
dc.date.accessioned2021-10-08T07:04:08Z
dc.date.available2021-10-08T07:04:08Z
dc.date.issued2010
dc.description.abstractThe oceanic biological carbon pump (BCP), a large (10 GT C yr−1) component of the global carbon cycle, is dominated by the sinking (export) of particulate organic carbon (POC) from surface waters. In the deep ocean, strong correlations between downward fluxes of biominerals and POC (the so-called ‘ballast effect’) suggest a potential causal relationship, the nature of which remains uncertain. We show that similar correlations occur in the upper ocean with high rates of export only occurring when biominerals are also exported. Exported particles are generally biomineral rich relative to the upper ocean standing stock, due either to: (1) exported material being formed from the aggregation of a biomineral rich subset of upper ocean particles; or (2) the unfractionated aggregation of the upper ocean particulate pool with respiration then selectively removing POC relative to biominerals until particles are dense enough to sink.
dc.identifier.apacitationSanders, R., Morris, P. J., Poulton, A. J., Stinchcombe, M. C., Charalampopoulou, A., Lucas, M. I., & Thomalla, S. J. (2010). Does a ballast effect occur in the surface ocean?. <i>Geophysical Research Letters</i>, 37(8), 8602 - 177. http://hdl.handle.net/11427/34433en_ZA
dc.identifier.chicagocitationSanders, Richard, Paul J Morris, Alex J Poulton, Mark C Stinchcombe, Anastasia Charalampopoulou, Mike I Lucas, and Sandy J Thomalla "Does a ballast effect occur in the surface ocean?." <i>Geophysical Research Letters</i> 37, 8. (2010): 8602 - 177. http://hdl.handle.net/11427/34433en_ZA
dc.identifier.citationSanders, R., Morris, P.J., Poulton, A.J., Stinchcombe, M.C., Charalampopoulou, A., Lucas, M.I. & Thomalla, S.J. 2010. Does a ballast effect occur in the surface ocean?. <i>Geophysical Research Letters.</i> 37(8):8602 - 177. http://hdl.handle.net/11427/34433en_ZA
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.ris TY - Journal Article AU - Sanders, Richard AU - Morris, Paul J AU - Poulton, Alex J AU - Stinchcombe, Mark C AU - Charalampopoulou, Anastasia AU - Lucas, Mike I AU - Thomalla, Sandy J AB - The oceanic biological carbon pump (BCP), a large (10 GT C yr−1) component of the global carbon cycle, is dominated by the sinking (export) of particulate organic carbon (POC) from surface waters. In the deep ocean, strong correlations between downward fluxes of biominerals and POC (the so-called ‘ballast effect’) suggest a potential causal relationship, the nature of which remains uncertain. We show that similar correlations occur in the upper ocean with high rates of export only occurring when biominerals are also exported. Exported particles are generally biomineral rich relative to the upper ocean standing stock, due either to: (1) exported material being formed from the aggregation of a biomineral rich subset of upper ocean particles; or (2) the unfractionated aggregation of the upper ocean particulate pool with respiration then selectively removing POC relative to biominerals until particles are dense enough to sink. DA - 2010 DB - OpenUCT DP - University of Cape Town IS - 8 J1 - Geophysical Research Letters LK - https://open.uct.ac.za PY - 2010 SM - 0094-8276 SM - 1944-8007 T1 - Does a ballast effect occur in the surface ocean? TI - Does a ballast effect occur in the surface ocean? UR - http://hdl.handle.net/11427/34433 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34433
dc.identifier.vancouvercitationSanders R, Morris PJ, Poulton AJ, Stinchcombe MC, Charalampopoulou A, Lucas MI, et al. Does a ballast effect occur in the surface ocean?. Geophysical Research Letters. 2010;37(8):8602 - 177. http://hdl.handle.net/11427/34433.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceGeophysical Research Letters
dc.source.journalissue8
dc.source.journalvolume37
dc.source.pagination8602 - 177
dc.source.urihttps://dx.doi.org/10.1029/2010GL042574
dc.subject.otherSILICA
dc.subject.otherTH-234
dc.subject.otherFLUXES
dc.subject.otherEXPORT
dc.subject.otherBLOOM
dc.subject.otherDRIFTING SEDIMENT TRAP
dc.subject.otherORGANIC-CARBON
dc.titleDoes a ballast effect occur in the surface ocean?
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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