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Brazilian Journal of Biology

versión impresa ISSN 1519-6984

Resumen

MARTINEZ, AS.; MENDES, LF.  y  LEITE, TS.. Spatial distribution of epibenthic molluscs on a sandstone reef in the Northeast of Brazil. Braz. J. Biol. [online]. 2012, vol.72, n.2, pp.287-298. ISSN 1519-6984.  http://dx.doi.org/10.1590/S1519-69842012000200009.

The present study investigated the distribution and abundance of epibenthic molluscs and their feeding habits associated to substrate features (coverage and rugosity) in a sandstone reef system in the Northeast of Brazil. Rugosity, low coral cover and high coverage of zoanthids and fleshy alga were the variables that influenced a low richness and high abundance of a few molluscan species in the reef habitat. The most abundant species were generalist carnivores, probably associated to a lesser offer and variability of resources in this type of reef system, when compared to the coral reefs. The results found in this study could reflect a normal characteristic of the molluscan community distribution in sandstone reefs, with low coral cover, or could indicate a degradation state of this habitat if it is compared to coral reefs, once that the significantly high coverage of fleshy alga has been recognized as a negative indicator of reef ecosystems health.

Palabras clave : molluscs; epifauna; sandstone reef; substrate cover; Brazil.

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