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Título: | Exudation of organic carbon by marine phytoplankton: Dependence on taxon and cell size |
Autor: | López-Sandoval, Daffne CSIC ORCID; Rodríguez-Ramos, Tamara; Cermeño, Pedro CSIC ORCID ; Marañón, Emilio | Palabras clave: | Taxonomic affiliation Cell size Organic carbon Exudation Phytoplankton |
Fecha de publicación: | 12-mar-2013 | Editor: | Inter Research | Citación: | Marine Ecology Progress Series 477: 53-60 (2013) | Resumen: | We 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 | Descripción: | 8 pages, 3 figures, 3 tables | Versión del editor: | https://doi.org/10.3354/meps10174 | URI: | http://hdl.handle.net/10261/115522 | DOI: | 10.3354/meps10174 | Identificadores: | doi: 10.3354/meps10174 issn: 0171-8630 e-issn: 1616-1599 |
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