||Fouilland Eric, Descolas Gros Chantal, Collos Yves, Vaquer a André, Souchu Philippe, Gasc Anne, Bibent Bertrand, Pons Virginie
||Univ Montpellier 2, Lab Hydrobiol Marine & Continentale, UMR 5556, F-34095 Montpellier 05, France.
Stn IFREMER, Lab Ecol, F-34200 Sete, France.
||Journal of Experimental Marine Biology and Ecology (0022-0981) (Elsevier), 2002-08 , Vol. 275 , N. 2 , P. 147-171
|WOS© Times Cited
||Heterotrophy, Autotrophy, Nitrogen enrichments, Size fractionated phytoplankton, Carboxylase activities
||The influence of dissolved inorganic and organic nitrogen (DIN and DON) enrichments on pools of enzymes responsible for CO2 fixation by the Calvin-Benson (Rubisco) and beta-carboxylation pathways (beta-carboxylases) were studied in a natural plankton assemblage. The plankton community from a coastal Mediterranean lagoon were incubated in situ for 24 h with initially ammonium, nitrate and DON (taurine) enrichments and compared to a control without any enrichment. An increase of small picophytoplankton and diatom biomass was observed in the enriched inorganic nitrogen treatments 7 - 10 h after the initial enrichment. Phytoplankton biomass decreased in the control and under taurine enrichment suggesting an inorganic nitrogen limitation of phytoplankton growth.