Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina

Autores
Charo, Melisa Paola; Gordillo, Sandra; Fucks, E. E.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Late Quaternary marine deposits in the area of Bahía San Blas (Buenos Aires, Argentina) form beach ridges and tidal plains bearing remains of organisms, mainly mollusc shells. These mollusc assemblages were characterized, and their changes assessed both over time, and related to local environmental factors. Twenty-six sites were analyzed, eleven Pleistocene, seven Holocene and eight modern sites. Fifty taxa (27 bivalves and 23 gastropods) were recorded for the area, with marine species predominant over estuarine. Within gastropods, epifaunal species and carnivores are predominant, with a lower proportion of herbivores and filter feeders, while bivalves are mostly infaunal and suspension feeders. Pleistocene associations are characterized by the high quantity of molluscs in rocky environments, and those of the Holocene by the presence of the warm water Crassostrea rhizophorae, which is currently displaced to lower latitudes. Within the modern associations four taxa, Mesodesma mactroides, Solen tehuelchus, Barnea lamellosa and Crassostrea gigas (an introduced species), are not recorded as fossils, but Mesodesma mactroides is found in Holocene shell middens from the area. According to multivariate analysis, the sites were divided into two groups: high energy deposits (storm ridges) and low-energy deposits (tidal plains), regardless of their age. Based on these results, mollusc variations in the area are thought to be related in part to changes in temperature that took place since the Pleistocene (e.g. C. rhizophorae); but mostly associated with the presence of sub-environments of different energy levels. This would favor the presence of different taxa in accordance to their ecological requirements.
Fil: Charo, Melisa Paola. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Fucks, E. E.. Universidad Nacional de La Plata; Argentina
Materia
Molluscs
Pleistocene
Holocene
Paleoecology
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/13570
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, ArgentinaCharo, Melisa PaolaGordillo, SandraFucks, E. E.MolluscsPleistoceneHolocenePaleoecologyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Late Quaternary marine deposits in the area of Bahía San Blas (Buenos Aires, Argentina) form beach ridges and tidal plains bearing remains of organisms, mainly mollusc shells. These mollusc assemblages were characterized, and their changes assessed both over time, and related to local environmental factors. Twenty-six sites were analyzed, eleven Pleistocene, seven Holocene and eight modern sites. Fifty taxa (27 bivalves and 23 gastropods) were recorded for the area, with marine species predominant over estuarine. Within gastropods, epifaunal species and carnivores are predominant, with a lower proportion of herbivores and filter feeders, while bivalves are mostly infaunal and suspension feeders. Pleistocene associations are characterized by the high quantity of molluscs in rocky environments, and those of the Holocene by the presence of the warm water Crassostrea rhizophorae, which is currently displaced to lower latitudes. Within the modern associations four taxa, Mesodesma mactroides, Solen tehuelchus, Barnea lamellosa and Crassostrea gigas (an introduced species), are not recorded as fossils, but Mesodesma mactroides is found in Holocene shell middens from the area. According to multivariate analysis, the sites were divided into two groups: high energy deposits (storm ridges) and low-energy deposits (tidal plains), regardless of their age. Based on these results, mollusc variations in the area are thought to be related in part to changes in temperature that took place since the Pleistocene (e.g. C. rhizophorae); but mostly associated with the presence of sub-environments of different energy levels. This would favor the presence of different taxa in accordance to their ecological requirements.Fil: Charo, Melisa Paola. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Fucks, E. E.. Universidad Nacional de La Plata; ArgentinaElsevier2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13570Charo, Melisa Paola; Gordillo, Sandra; Fucks, E. E.; Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina; Elsevier; Quaternary International; 301; 7-2013; 135-1491040-6182enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2012.12.019info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618212033861info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:24:56Zoai:ri.conicet.gov.ar:11336/13570instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:24:56.316CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
title Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
spellingShingle Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
Charo, Melisa Paola
Molluscs
Pleistocene
Holocene
Paleoecology
title_short Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
title_full Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
title_fullStr Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
title_full_unstemmed Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
title_sort Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina
dc.creator.none.fl_str_mv Charo, Melisa Paola
Gordillo, Sandra
Fucks, E. E.
author Charo, Melisa Paola
author_facet Charo, Melisa Paola
Gordillo, Sandra
Fucks, E. E.
author_role author
author2 Gordillo, Sandra
Fucks, E. E.
author2_role author
author
dc.subject.none.fl_str_mv Molluscs
Pleistocene
Holocene
Paleoecology
topic Molluscs
Pleistocene
Holocene
Paleoecology
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Late Quaternary marine deposits in the area of Bahía San Blas (Buenos Aires, Argentina) form beach ridges and tidal plains bearing remains of organisms, mainly mollusc shells. These mollusc assemblages were characterized, and their changes assessed both over time, and related to local environmental factors. Twenty-six sites were analyzed, eleven Pleistocene, seven Holocene and eight modern sites. Fifty taxa (27 bivalves and 23 gastropods) were recorded for the area, with marine species predominant over estuarine. Within gastropods, epifaunal species and carnivores are predominant, with a lower proportion of herbivores and filter feeders, while bivalves are mostly infaunal and suspension feeders. Pleistocene associations are characterized by the high quantity of molluscs in rocky environments, and those of the Holocene by the presence of the warm water Crassostrea rhizophorae, which is currently displaced to lower latitudes. Within the modern associations four taxa, Mesodesma mactroides, Solen tehuelchus, Barnea lamellosa and Crassostrea gigas (an introduced species), are not recorded as fossils, but Mesodesma mactroides is found in Holocene shell middens from the area. According to multivariate analysis, the sites were divided into two groups: high energy deposits (storm ridges) and low-energy deposits (tidal plains), regardless of their age. Based on these results, mollusc variations in the area are thought to be related in part to changes in temperature that took place since the Pleistocene (e.g. C. rhizophorae); but mostly associated with the presence of sub-environments of different energy levels. This would favor the presence of different taxa in accordance to their ecological requirements.
Fil: Charo, Melisa Paola. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentina
Fil: Fucks, E. E.. Universidad Nacional de La Plata; Argentina
description Late Quaternary marine deposits in the area of Bahía San Blas (Buenos Aires, Argentina) form beach ridges and tidal plains bearing remains of organisms, mainly mollusc shells. These mollusc assemblages were characterized, and their changes assessed both over time, and related to local environmental factors. Twenty-six sites were analyzed, eleven Pleistocene, seven Holocene and eight modern sites. Fifty taxa (27 bivalves and 23 gastropods) were recorded for the area, with marine species predominant over estuarine. Within gastropods, epifaunal species and carnivores are predominant, with a lower proportion of herbivores and filter feeders, while bivalves are mostly infaunal and suspension feeders. Pleistocene associations are characterized by the high quantity of molluscs in rocky environments, and those of the Holocene by the presence of the warm water Crassostrea rhizophorae, which is currently displaced to lower latitudes. Within the modern associations four taxa, Mesodesma mactroides, Solen tehuelchus, Barnea lamellosa and Crassostrea gigas (an introduced species), are not recorded as fossils, but Mesodesma mactroides is found in Holocene shell middens from the area. According to multivariate analysis, the sites were divided into two groups: high energy deposits (storm ridges) and low-energy deposits (tidal plains), regardless of their age. Based on these results, mollusc variations in the area are thought to be related in part to changes in temperature that took place since the Pleistocene (e.g. C. rhizophorae); but mostly associated with the presence of sub-environments of different energy levels. This would favor the presence of different taxa in accordance to their ecological requirements.
publishDate 2013
dc.date.none.fl_str_mv 2013-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/13570
Charo, Melisa Paola; Gordillo, Sandra; Fucks, E. E.; Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina; Elsevier; Quaternary International; 301; 7-2013; 135-149
1040-6182
url http://hdl.handle.net/11336/13570
identifier_str_mv Charo, Melisa Paola; Gordillo, Sandra; Fucks, E. E.; Paleoecological significance of Late Quaternary molluscan faunas of the Bahia San Blas area, Argentina; Elsevier; Quaternary International; 301; 7-2013; 135-149
1040-6182
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2012.12.019
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618212033861
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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