Les peuplements benthiques de la faille Vema: données quantitatives et bilan d'énergie en milieu abyssal. (Benthic populations of the Vema fracture zone: quantitative data and energy budget in the deep-sea environment)
139 samples and 83 species are included in the matrix data. Correspondance Analysis is shown to be appropriate in the classification of heterogeneous systems. It isolates Mesopsio moorei sand population from whole other samples. General Analysis
is better appropriate within homogeneous systems, and is able to study populations with regard to production. Results are comparable with those got from the whole fauna. In addition, a biogeographic limit is pointed out, within Amphicteis gunneri sponge