A newly discovered maerl bottom was sampled by grab at 45 m depth off the western coasts of Elba Island. Although the dominant, branched free-living corallines represent the maerl facires of the Coastal Detritic Biocoenosis (DC), the living molluscs are related to a different biocoenosis: the Coarse Sand and Fine Gravel under bottom currents (SGCF). In the molluscan shell assemblage, 2186 specimens belonging to 123 species have been analized on the basis of abundance, life habit, state of preservation, substrate preference and trophic behaviour. The evolution of the bottom has been traced, from terrigenous SGCF to biogenic DC in the recent past and toward SGCF again in the present. It is suggested that the maerl facies in the Mediterranean, at the boundary between DC and SGCF, would require a dynamic equilibrium between the two Biocoenoses and the ecological factors subtending them

Basso, D., Brusoni, F. (2004). The molluscan assemblage of a transitional environment: the Mediterranean maërl from off the Elba Island (Tuscan Archipelago, Tyrrhenian Sea). BOLLETTINO MALACOLOGICO, 40(1-4), 37-45.

The molluscan assemblage of a transitional environment: the Mediterranean maërl from off the Elba Island (Tuscan Archipelago, Tyrrhenian Sea)

BASSO, DANIELA MARIA;
2004

Abstract

A newly discovered maerl bottom was sampled by grab at 45 m depth off the western coasts of Elba Island. Although the dominant, branched free-living corallines represent the maerl facires of the Coastal Detritic Biocoenosis (DC), the living molluscs are related to a different biocoenosis: the Coarse Sand and Fine Gravel under bottom currents (SGCF). In the molluscan shell assemblage, 2186 specimens belonging to 123 species have been analized on the basis of abundance, life habit, state of preservation, substrate preference and trophic behaviour. The evolution of the bottom has been traced, from terrigenous SGCF to biogenic DC in the recent past and toward SGCF again in the present. It is suggested that the maerl facies in the Mediterranean, at the boundary between DC and SGCF, would require a dynamic equilibrium between the two Biocoenoses and the ecological factors subtending them
Articolo in rivista - Articolo scientifico
Mollusca, thanatocoenosis, benthic bionomy, Mediterranean, maerl, Elba Island
English
30-lug-2004
40
1-4
37
45
none
Basso, D., Brusoni, F. (2004). The molluscan assemblage of a transitional environment: the Mediterranean maërl from off the Elba Island (Tuscan Archipelago, Tyrrhenian Sea). BOLLETTINO MALACOLOGICO, 40(1-4), 37-45.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/13189
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