Biomass and abundance By L. Postel, H. Fock and W. Hagen

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Contents 4.1 Introduction 4.2 Shipboard sample treatment 4.3 Biovolume and biomass determination - Volumetric methods - Settling Volume - Displacement Volume - Gravimetric methods - Wet mass, fresh mass and live mass - Dry mass - Ash-free dry mass - Biochemical methods - Sample preparation - Elemental analysis - Organic carbon (and hydrogen) - Organic nitrogen - Organic phosphorous - Organic compounds - Proteins - Lipids - Carbohydrates - Energy content - Adenosine triphosphate (ATP) - Conversion factors and equations 4.4 Abundance and species identification 4.5 Analysis of community structure - Estimation of species numbers - Diversity and similarity indices - Classification and ordination: the detection of groups - Multivariate classification techniques - Recurrent group analysis - Matching species and samples: indicator species analysis - Analysis of spatial and temporal formations - Examination of processes within communities by network analysis 4.6 Acknowledgements 4.7 References Top of the Document Questions Top of the Document Comments and corrections Top of the Document New Protocols Top of the Document