Synthèse et dégradation des composés glucidiques au sein de la communauté planctonique en zone marine eutrophe

Abstract

Synthhse et degradation des composes glucidiques au sein de la communaute planctonique en zone marine eutrophe Synthesis and Degradation of Carbohydrates in the Marine Planktonic Community of Eutrophic Waters Abstract A general study on the relations between "phytoplanktonic excretion" and "heterotrophic assimilation" has been carried out in eutrophic systems, natural or artificial. In the complex systems of these relations, two types of heterotrophic responses were obtained according to prevailing algal species.High heterotrophic potentials in NW African upwelling show the role of microorganisms in the disappearance of freshly excreted organic substances and in the composition of the remaining organic matter.