Arfi Robert, Guiral Daniel, Torréton Jean-Pascal. (1991). Natural recolonization of a productive tropical pond : day to day variations in the photosynthetic parameters. Aquatic Sciences, 53 (1), p. 39-54. ISSN 1015-1621.
Titre du document
Natural recolonization of a productive tropical pond : day to day variations in the photosynthetic parameters
Année de publication
1991
Type de document
Article
Auteurs
Arfi Robert, Guiral Daniel, Torréton Jean-Pascal
Source
Aquatic Sciences, 1991,
53 (1), p. 39-54 ISSN 1015-1621
Chlorophyll pigments (CHL), primary productivity (PP) and particulate nitrogen (Np) in relation to several environmental factors were monitored during planktonic colonization of an aquaculture pond (Layo, Côte d'Ivoire). How interactions between the organisms are established in an initially azoic environment were investigated ... Overall, photosynthetic activity appeared to be closely linked to algal biomass. The study of autotrophic biomass and activity in different size classes in relation to the other parameters allowed us to precise the origin of the biomass fluctuations. The first bloom appeared to be controlled by selective grazing on small algae. The second algal development ended when N requirement represented at least 69% of N supply (in the N - NH4 form). This control was enhanced by the appearance of rotifers, leading to a more complex equilibrium. (D'après résumé d'auteur)
