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Exudation of organic carbon by marine phytoplankton: Dependence on taxon and cell size

AutorLópez-Sandoval, Daffne ; Rodríguez-Ramos, Tamara; Cermeño, Pedro ; Marañón, Emilio
Palabras claveTaxonomic affiliation
Cell size
Organic carbon
Exudation
Phytoplankton
Fecha de publicación12-mar-2013
EditorInter Research
CitaciónMarine Ecology Progress Series 477: 53-60 (2013)
ResumenWe determined the relationship between photosynthetic production of dissolved organic carbon (OC) and phytoplankton cell size and taxonomic composition in cultures of marine phytoplankton at 3 different growth stages. We measured OC exudation in 22 species belonging to 5 phyla and spanning >7 orders of magnitude in cell volume. The extracellular release of OC in our cultures represented on average ~2% of total carbon fixation, was not statistically different between growth stages, and was not correlated to cell size. The cell-specific OC exudation rate held an isometric relationship with cell size during the different growth phases (average slope: 0.95), which implies that general allometric models cannot be used to predict exudation in marine phytoplankton. Copyright © Inter-Research 2013
Descripción8 pages, 3 figures, 3 tables
Versión del editorhttp://dx.doi.org/10.3354/meps10174
URIhttp://hdl.handle.net/10261/115522
DOI10.3354/meps10174
Identificadoresdoi: 10.3354/meps10174
issn: 0171-8630
e-issn: 1616-1599
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