Artículo
Benthic mollusc assemblages in West Antarctica: taxa composition and ecological insights
Fecha de publicación:
04/2017
Editorial:
Csiro Publishing
Revista:
Marine and Freshwater Research
ISSN:
1323-1650
e-ISSN:
1448-6059
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Although different studies in Antarctica have dealt with benthic communities, few studies have focused on molluscan assemblages and their ecology. During the austral summer of 2011, 17 stations between depths of 68.5 and 754 m were sampled in West Antarctica using a demersal bottom trawl pilot net on board RV ARA Puerto Deseado. In all, 1848 specimens of shelled molluscs were recorded. Gastropods were the most diverse group (species richness = 74) and bivalves were the most abundant (n = 1344). Shannon Wiener diversity index values ranged between 0.58 and 2.99, with great variation at different stations. Cluster analysis using the Bray Curtis coefficient showed three distinct assemblages types: one dominated by suspension feeders; a second with representatives from different trophic groups, including suspension feeders, grazers, scavengers, predators and deposit feeders; and a third, more differentiated, with few taxa and dominated by deposit feeders. Finally, multivariate analysis suggests that bivalves were more sensitive to temperature, whereas gastropods were more sensitive to depth.
Palabras clave:
Mollusc Assemblages
,
Antarctica
,
Taxa Composition
,
Ecology
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CICTERRA)
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Citación
Gordillo, Sandra; Malvé, Mariano Ezequiel; Morán, Ariana Gisela; Benthic mollusc assemblages in West Antarctica: taxa composition and ecological insights; Csiro Publishing; Marine and Freshwater Research; 68; 11; 4-2017; 2095-2105
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