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Artículo

Benthic biodiversity off the eastern mouth of the Strait of Magellan (Argentina, south-west Atlantic)

Centurion, Romina Luisa SabrinaIcon ; Lopez Gappa, Juan JoseIcon
Fecha de publicación: 13/09/2012
Editorial: Cambridge University Press
Revista: Journal Of The Marine Biological Association Of The United Kingdom
ISSN: 0025-3154
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Biología Marina, Limnología

Resumen

The analysis of changes in benthic community structure using multivariate techniques has been successfully applied to the detection and monitoring of impacts caused by oil related activities. A survey to assess the status of the benthos was performed prior to a scheduled exploratory drilling at Banco Sarmiento, a shoal located off the eastern mouth of the Strait of Magellan (south-west Atlantic). The aims of this study are to provide baseline data about the composition and structure of the subtidal macrobenthic assemblages, to analyse the relationships between biodiversity and environmental variables, and to compare its benthic assemblages with those of neighbouring areas. Multivariate analyses classified the stations in two major groups, one composed of relatively shallow stations with coarse sediments dominated by filter-feeders, and the other consisting of stations with a high proportion of sand and mud dominated by deposit-feeders. Poorly sorted sediments had higher species richness than well sorted sediments. Shallow stations showed the lowest taxonomic distinctness due to the occurrence of a high proportion of bryozoans encrusting hard substrata. A five-fold increase in biodiversity can occur at scales of tens of km, suggesting that generalizations on regional biodiversity patterns should be made with caution because of the different gears used during the collection of samples, and should be based on a thorough knowledge about the physical environment.
Palabras clave: Benthic Macrofauna , Subtidal , Biodiversity , Taxonomic Distinctness , South-West Atlantic
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/8435
DOI: http://dx.doi.org/10.1017/S0025315412001208
URL: https://www.cambridge.org/core/journals/journal-of-the-marine-biological-associa
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Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Centurion, Romina Luisa Sabrina; Lopez Gappa, Juan Jose; Benthic biodiversity off the eastern mouth of the Strait of Magellan (Argentina, south-west Atlantic); Cambridge University Press; Journal Of The Marine Biological Association Of The United Kingdom; 93; 3; 13-9-2012; 611-617
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