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Effects of environmental factors on the distribution of the edible bivalves Atactodea striata, Gafrarium tumidum and Anadara scapha on the coast of New Caledonia (SW Pacific)

Published online by Cambridge University Press:  15 April 1992

Jérôme Baron  and
Jacques Clavier
Jérôme Baron
Affiliation:
ORSTOM, Centre de Nouméa, BP A5, Nouméa, New Caledonia
Jacques Clavier
Affiliation:
ORSTOM, Centre de Nouméa, BP A5, Nouméa, New Caledonia
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Abstract

Factors influencing the spatial distribution of the bivalves Atactodea striata. Gafrarium tumidum and Anadara scapha were analysed on the south-west coast of New Caledonia, using a multivariate approach (correspondence analysis). A. striata is abundant on sandy beaches with a high coarse sand content. G. tumidum is preferentially distributed on substrates located close to the lower limit of neap tide and seems to be independent of sediment granulometry. A. scapha adults occur at lower bathymetric levels, with sediment composed of 40% medium, fine and very fine sand, and 30% very coarse and coarse sand. For this species, juvenile migration is suggested by the differential distribution of young and adults.

Keywords

BivalvePacificNew Caledonialagoonsoft bottomecologyspatial distributioncorrespondence analysisBivalvePacifiqueNouvelle-Calédonielagonsubstrat meubleécologiedistribution spatialeanalyse des correspondances
Type
Research Article
Information
Aquatic Living Resources , Volume 5 , Issue 2 , April 1992 , pp. 107 - 114
Copyright
© IFREMER-Gauthier-Villars, 1992

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