AME 52:119-130 (2008) - DOI: https://doi.org/10.3354/ame01208
Oxygen production and carbon fixation in oligotrophic coastal bays and the relationship with gross and net primary production
Natalia González1,3,* Jean-Pierre Gattuso1, Jack J. Middelburg2
ABSTRACT: Planktonic primary production and respiration in 2 coastal oligotrophic sites of the Northwest Mediterranean Sea were examined. Primary production was quantified using 3 methods (light and dark changes in dissolved O2, 18O-labeling and 14C uptake technique) using in situ bottle incubations. Gross primary production (GPP) based on the O2 light-dark technique was not significantly different from that using the 18O-labeling technique, indicating that the former technique provides accurate estimates of GPP in these environments. Respiration in the dark was not significantly different from respiration in the light. Total 14C uptake (including the dissolved and particulate organic carbon fractions) during the whole duration of the light period approached GPP and consequently overestimated net primary production.
KEY WORDS: Primary production · Oligotrophic coastal bays · Light-dark O2 changes · 18O-labeling · 14C uptake · Respiration in the light
| Full text in pdf format | Cite this article as: González N, Gattuso JP, Middelburg JJ
(2008) Oxygen production and carbon fixation in oligotrophic coastal bays and the relationship with gross and net primary production. Aquat Microb Ecol 52:119-130. https://doi.org/10.3354/ame01208
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