Influence of nitrogen enrichment on size-fractionated in vitro carboxylase activities of phytoplankton from Thau Lagoon (Coastal Mediterranean Lagoon, France)

Type Article
Date 2002-08
Language English
Author(s) Fouilland Eric, Descolas Gros Chantal, Collos Yves, Vaquer a André, Souchu Philippe, Gasc Anne, Bibent Bertrand, Pons Virginie
Affiliation(s) Univ Montpellier 2, Lab Hydrobiol Marine & Continentale, UMR 5556, F-34095 Montpellier 05, France.
Stn IFREMER, Lab Ecol, F-34200 Sete, France.
Source Journal of Experimental Marine Biology and Ecology (0022-0981) (Elsevier), 2002-08 , Vol. 275 , N. 2 , P. 147-171
DOI 10.1016/S0022-0981(02)00235-6
WOS© Times Cited 7
Keyword(s) Heterotrophy, Autotrophy, Nitrogen enrichments, Size fractionated phytoplankton, Carboxylase activities
Abstract 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.
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Fouilland Eric, Descolas Gros Chantal, Collos Yves, Vaquer a André, Souchu Philippe, Gasc Anne, Bibent Bertrand, Pons Virginie (2002). Influence of nitrogen enrichment on size-fractionated in vitro carboxylase activities of phytoplankton from Thau Lagoon (Coastal Mediterranean Lagoon, France). Journal of Experimental Marine Biology and Ecology, 275(2), 147-171. Publisher's official version : https://doi.org/10.1016/S0022-0981(02)00235-6 , Open Access version : https://archimer.ifremer.fr/doc/00000/451/