Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)

As the Beagle Channel lies between the Atlantic and the Pacific oceans, this is a critical region for the interpretation of faunal distributions in the Magellan Region. This work proposes a paleoenvironmental interpretation of the Holocene, inferred from malacological data. The development of differ...

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Autores principales:	Gordillo,Sandra, Rabassa,Jorge, Coronato,Andrea
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2008
Materias:	Paleoecology Mollusca Holocene Tierra del Fuego
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082008000200007
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spelling	oai:scielo:S0716-020820080002000072009-06-09Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)Gordillo,SandraRabassa,JorgeCoronato,Andrea Paleoecology Mollusca Holocene Tierra del Fuego As the Beagle Channel lies between the Atlantic and the Pacific oceans, this is a critical region for the interpretation of faunal distributions in the Magellan Region. This work proposes a paleoenvironmental interpretation of the Holocene, inferred from malacological data. The development of different local benthic paleocommunities during the mid-Holocene is associated with the diversity of habitats inside this channel. The analysis of records of Venus antigua and Ensis macha through time and their geographic links to ecological factors showed that these taxa are typical elements of the cold-temperate seas throughout the Magellan Region, showing a similar range of distribution and paleodistribution. The presence of these taxa in life position (AMS 14C of 6,276±41 years BP) suggests that during the mid-Holocene the Beagle Channel was a path for dispersion of these taxa between the two oceans. Whether Venus antigua andEnsis macha are Pleistocene survivors or Holocene migrants is herein discussed. In the future, integrated cross-disciplinary studies will be necessary for a better understanding of the biogeographic relationships among magellanic mollusks.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Revista geológica de Chile v.35 n.2 20082008-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082008000200007en10.4067/S0716-02082008000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Paleoecology Mollusca Holocene Tierra del Fuego
spellingShingle	Paleoecology Mollusca Holocene Tierra del Fuego Gordillo,Sandra Rabassa,Jorge Coronato,Andrea Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
description	As the Beagle Channel lies between the Atlantic and the Pacific oceans, this is a critical region for the interpretation of faunal distributions in the Magellan Region. This work proposes a paleoenvironmental interpretation of the Holocene, inferred from malacological data. The development of different local benthic paleocommunities during the mid-Holocene is associated with the diversity of habitats inside this channel. The analysis of records of Venus antigua and Ensis macha through time and their geographic links to ecological factors showed that these taxa are typical elements of the cold-temperate seas throughout the Magellan Region, showing a similar range of distribution and paleodistribution. The presence of these taxa in life position (AMS 14C of 6,276±41 years BP) suggests that during the mid-Holocene the Beagle Channel was a path for dispersion of these taxa between the two oceans. Whether Venus antigua andEnsis macha are Pleistocene survivors or Holocene migrants is herein discussed. In the future, integrated cross-disciplinary studies will be necessary for a better understanding of the biogeographic relationships among magellanic mollusks.
author	Gordillo,Sandra Rabassa,Jorge Coronato,Andrea
author_facet	Gordillo,Sandra Rabassa,Jorge Coronato,Andrea
author_sort	Gordillo,Sandra
title	Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
title_short	Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
title_full	Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
title_fullStr	Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
title_full_unstemmed	Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)
title_sort	paleoecology and paleobiogeographic patterns of mid-holocene mollusks from the beagle channel (southern tierra del fuego, argentina)
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082008000200007
work_keys_str_mv	AT gordillosandra paleoecologyandpaleobiogeographicpatternsofmidholocenemollusksfromthebeaglechannelsoutherntierradelfuegoargentina AT rabassajorge paleoecologyandpaleobiogeographicpatternsofmidholocenemollusksfromthebeaglechannelsoutherntierradelfuegoargentina AT coronatoandrea paleoecologyandpaleobiogeographicpatternsofmidholocenemollusksfromthebeaglechannelsoutherntierradelfuegoargentina
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Paleoecology and paleobiogeographic patterns of mid-Holocene mollusks from the Beagle Channel (southern Tierra del Fuego, Argentina)

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