2012
DOI: 10.1029/2012gb004353
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Abstract: [1] At least 15% of the 2 Pg y À1 of dissolved organic carbon (DOC) that accumulates in the surface layer of the open ocean has been exported from the ocean margins. The C: N: P stoichiometry of the production and microbial degradation of dissolved organic matter (DOM) in the coastal ocean conditions the quality of the exported substrates. In this work, DOC, dissolved organic nitrogen (DON) and phosphorus (DOP) bioavailability measurements from published bottle incubation experiments have been compiled and rea… Show more

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Cited by 88 publications
(79 citation statements)
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References 102 publications
(127 reference statements)
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“…DOP was highest in the coastal ecosystems (Table 2), with seasonal differences in some regions (Supplementary Figure 14). The average C:N:P stoichiometry of the DOM pool was 367:49:1, which was higher than the Redfield ratio but comparable with ratios reported for coastal waters worldwide (Lønborg and Álvarez-Salgado, 2012). Table 1).…”
Section: Environmental Conditionssupporting
confidence: 82%
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“…DOP was highest in the coastal ecosystems (Table 2), with seasonal differences in some regions (Supplementary Figure 14). The average C:N:P stoichiometry of the DOM pool was 367:49:1, which was higher than the Redfield ratio but comparable with ratios reported for coastal waters worldwide (Lønborg and Álvarez-Salgado, 2012). Table 1).…”
Section: Environmental Conditionssupporting
confidence: 82%
“…Differences in GPP:CR ratios can be caused by differences in (1) light and nutrient availability; (2) food web organization; (3) changes in phytoplankton community structure and cell sizes; and/or (4) bioavailability of the organic matter pool which varies over both seasonal and spatial scales (Mallin and Paerl, 1992;Lønborg and Álvarez-Salgado, 2012;Marañón, 2015). Due to our current limited understanding of plankton community composition and the supply mechanisms of nutrients and organic matter in these waters means it is difficult to account for the main driving force of the variable GPP: CR ratio.…”
Section: Discussionmentioning
confidence: 99%
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“…The main processes responsible for the removal of DOC from the ocean water column are: (1) photochemistry, where DOC is degraded directly to CO 2 , carbon monoxide (CO) or low molecular weight organic compounds readily available for prokaryote uptake (Moran and Zepp, 1997;Mopper et al, 2015); (2) abiotic aggregation into microparticles (Kerner et al, 2003) or sorption to particles (Chin et al, 1998); (3) abiotic degradation via free radical reactions with oxygen (Rontani et al, 2014); and (4) degradation by marine heterotrophic prokaryotes (Lønborg and Álvarez-Salgado, 2012), with the latter representing the major DOC sink in the ocean .…”
Section: Introductionmentioning
confidence: 99%
“…These long-term assays have not been based on growth, but on changes in bulk nutrient concentrations in solution (Lonborg and Anton Alvarez-Salgado, 2012). However, during long incubation periods various factors can interfere with the uptake of bioavailable resources, such as the dynamics of viruses and the development of toxic conditions that may arise from repeated bacterial regeneration of resources (Cho et al, 1996).…”
Section: Introductionmentioning
confidence: 99%