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► Enzymatic technics applied to microbial ecology

► Radio-tracers techniques applied to microbial ecology 14C, 3H, 32Si, 55Fe, 54Mn)

► microbial diversity analysis based on molecular biology

► Bio-assays for the identification of organic matter biodegradability

► Cultures know-how and North Sea collections (diatoms, Phaeocystis)

► Microorganisms counting and taxonomy

► Monitoring of water microbiological quality

► Marine bio-optic

► Ecological and biogeochemical modeling