Año 1997, Número 11 – 145-152

Año 1997, Número 11 – 145-152

Bremec, C.; Roux, A. 1997.  Resultados del análisis de una campaña de investigación pesquera, sobre comunidades bentónicas asociadas a bancos de mejillón (Mytilus edulis platensis D’Orb.) en costas de Buenos Aires, Argentina.
Rev. Invest. Desarr. Pesq., 11: 153-166. Ver texto completo

Macrobenthic sampling was carried out during the survey of mussel beds (Mytilus edulis platensis, D’Orb) at the continental shelf of Buenos Aires province (Argentina) (EH-06/93, INIDEP). 47 samples were obtained with a hard bottom dredge between 18 m and 64 m depth; sedimentological samples were also collected in every station. The following descriptors were used: Maxime Dominance, Relative Dominance, Relative Presence (Bouderesque, 1971), Specific Diversity(H’)(Shannon & Weaver, 1963) and Evenness (J’)(Pielou, 1966). Faunistic associations and areas of distribution were defined using cluster analysis (UPGMA, Q and R modes)(Legendre & Legendre, 1979). The community structure of the benthic macrofauna associated to mussel beds was defined for a coastal area between 37°S and 39°.These areas are characterized by a high heterogeneity in granulometric composition and patchy distribution of faunistics associations.