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Brett (1964) has constructed a new apparatus for sampling macrofauna of the marine benthos. This apparatus is derived from the “gold sucker” employed byScuba divers for underwater work. It was used from 1965 for research on the productivity of some sand bottom communities (Venus gallina community ofPetersen). Some improvements have been made to obtain a good quantitative sampler. A comparison has been made between the biomasses obtained with an “Orange-Peel” grab and the hydraulic aspirator ofBrett, respectively; advantages and disadvantages are discussed.

Emploi d'une suceuse hydraulique transformée pour les prélèvements quantitatifs dans les substrats meubles infralittoraux