Distribution and fluxes of particulate and dissolved organic compounds in the Channel and the North Sea. Transfer, biomass and biodegradation of 'natural' organic compounds

analytical methods biodegradation biomasa biomass biomasse chitin chitine contenido mineral contenido proteico distribution des populations enzymic activity flora microbiana flore microbienne in vitro experimentation lipid content mar del norte mer du nord metabolism metabolisme metabolismo microbial flora mineral content north sea organic compounds population distribution protein content quitina seasonal variation sedimentation technique analytique teneur en lipides