Torréton Jean-Pascal, Guiral Daniel, Arfi Robert. (1989). Bacterioplankton biomass and production during destratification in a monomictic eutrophic bay of a tropical lagoon. Marine Ecology Progress Series, 57, p. 53-67. ISSN 0171-8630.
Titre du document
Bacterioplankton biomass and production during destratification in a monomictic eutrophic bay of a tropical lagoon
Année de publication
1989
Type de document
Article
Auteurs
Torréton Jean-Pascal, Guiral Daniel, Arfi Robert
Source
Marine Ecology Progress Series, 1989,
57, p. 53-67 ISSN 0171-8630
Vertical profiles of bacterial biomass (AODC method), production of biomass (Thymidine method) and total ETS (Electron Transport System) activity were recorded on 14 dates during the destratification process in the monomitic eutrophic Biétri Bay (Ebrié lagoon, Ivory Coast). Bacterial biomass and production were both very high, indicating the importance of heterotrophic processes in this system. Interpretation of ETS data suggests that bacteria or "bacteria-associated organisms" are responsible for most of the oxygen consumed in the water column. Integrated bacterial production of biomass represented ca 80% of carbon produced by primary producers, thus showing that autotrophic production does not meet heterotrophic requirements of bacteria. Destratification appears to be of less importance than suggested by the physical and chemical characteristics, resulting in decrease of bacterial biomass and production by a factor of 2 in the epilimnion. (D'après résumé d'auteur)