Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology

Autores
Charo, Melisa Paola; Fucks, Enrique Eduardo; Gordillo, Sandra
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The most recent Quaternary marine transgressions are well represented along the South Atlantic coast. In the Colorado River delta (39°15'S-39°55'S), south of Buenos Aires Province these deposits are mostly littoral ridges and tidal plains with abundant fossil marine fauna. Seventeen localities were analyzed (five Pleistocene, seven Holocene and five modern ones) representing the Interglacials ≥ MIS 9, MIS 5e and MIS 1. A total of 51 species were recorded (29 bivalves and 22 gastropods), together with nine micromolluscs. MIS 1 and the modern coast (37 and 42 species respectively) are the richest ones in species, unlike MIS 5e and MIS 9 (18 and 2 species respectively). In ≥MIS 9, the most abundant species is Pitar rostratus. MIS 5e and MIS 1 have in common the presence and abundance of the gastropod Heleobia australis and the bivalve Tagelus plebeius, as typical fauna of low energy environments, being the bivalve Glycymeris longior and the gastropods Bostrycapulus odites and Buccinanops globulosus common species in both kinds of marine deposits. Approximately 90% of bivalves and 75-71% of gastropods of the marine fauna are recorded from MIS 5e to the present. According to the different descriptive analyses (Bray-Curtis Index and AC) the molluscan fauna was grouped in two and five assemblages respectively, defined by age, type of deposit, and presence and/or abundance of species. Marine species represented in the area of the Colorado River delta vary in abundance among the interglacials but not in faunal composition. One of the possible causes would be the global climatic changes (e.g., rise of sea surface temperature SST) and the heterogeneity of habitats that would have conditioned the development of the different faunal assemblages during the Quaternary.
Fil: Charo, Melisa Paola. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
COLORADO RIVER DELTA
MOLLUSCS
PALEOENVIRONMENT
QUATERNARY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/98810
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/98810
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatologyCharo, Melisa PaolaFucks, Enrique EduardoGordillo, SandraCOLORADO RIVER DELTAMOLLUSCSPALEOENVIRONMENTQUATERNARYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The most recent Quaternary marine transgressions are well represented along the South Atlantic coast. In the Colorado River delta (39°15'S-39°55'S), south of Buenos Aires Province these deposits are mostly littoral ridges and tidal plains with abundant fossil marine fauna. Seventeen localities were analyzed (five Pleistocene, seven Holocene and five modern ones) representing the Interglacials ≥ MIS 9, MIS 5e and MIS 1. A total of 51 species were recorded (29 bivalves and 22 gastropods), together with nine micromolluscs. MIS 1 and the modern coast (37 and 42 species respectively) are the richest ones in species, unlike MIS 5e and MIS 9 (18 and 2 species respectively). In ≥MIS 9, the most abundant species is Pitar rostratus. MIS 5e and MIS 1 have in common the presence and abundance of the gastropod Heleobia australis and the bivalve Tagelus plebeius, as typical fauna of low energy environments, being the bivalve Glycymeris longior and the gastropods Bostrycapulus odites and Buccinanops globulosus common species in both kinds of marine deposits. Approximately 90% of bivalves and 75-71% of gastropods of the marine fauna are recorded from MIS 5e to the present. According to the different descriptive analyses (Bray-Curtis Index and AC) the molluscan fauna was grouped in two and five assemblages respectively, defined by age, type of deposit, and presence and/or abundance of species. Marine species represented in the area of the Colorado River delta vary in abundance among the interglacials but not in faunal composition. One of the possible causes would be the global climatic changes (e.g., rise of sea surface temperature SST) and the heterogeneity of habitats that would have conditioned the development of the different faunal assemblages during the Quaternary.Fil: Charo, Melisa Paola. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; ArgentinaFil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaPergamon-Elsevier Science Ltd2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/98810Charo, Melisa Paola; Fucks, Enrique Eduardo; Gordillo, Sandra; Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology; Pergamon-Elsevier Science Ltd; Quaternary International; 377; 8-2015; 52-701040-6182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618215005121info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2015.05.025info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:35:28Zoai:ri.conicet.gov.ar:11336/98810instacron: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:34982025-10-15 15:35:29.151CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
title Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
spellingShingle Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
Charo, Melisa Paola
COLORADO RIVER DELTA
MOLLUSCS
PALEOENVIRONMENT
QUATERNARY
title_short Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
title_full Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
title_fullStr Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
title_full_unstemmed Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
title_sort Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology
dc.creator.none.fl_str_mv Charo, Melisa Paola
Fucks, Enrique Eduardo
Gordillo, Sandra
author Charo, Melisa Paola
author_facet Charo, Melisa Paola
Fucks, Enrique Eduardo
Gordillo, Sandra
author_role author
author2 Fucks, Enrique Eduardo
Gordillo, Sandra
author2_role author
author
dc.subject.none.fl_str_mv COLORADO RIVER DELTA
MOLLUSCS
PALEOENVIRONMENT
QUATERNARY
topic COLORADO RIVER DELTA
MOLLUSCS
PALEOENVIRONMENT
QUATERNARY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The most recent Quaternary marine transgressions are well represented along the South Atlantic coast. In the Colorado River delta (39°15'S-39°55'S), south of Buenos Aires Province these deposits are mostly littoral ridges and tidal plains with abundant fossil marine fauna. Seventeen localities were analyzed (five Pleistocene, seven Holocene and five modern ones) representing the Interglacials ≥ MIS 9, MIS 5e and MIS 1. A total of 51 species were recorded (29 bivalves and 22 gastropods), together with nine micromolluscs. MIS 1 and the modern coast (37 and 42 species respectively) are the richest ones in species, unlike MIS 5e and MIS 9 (18 and 2 species respectively). In ≥MIS 9, the most abundant species is Pitar rostratus. MIS 5e and MIS 1 have in common the presence and abundance of the gastropod Heleobia australis and the bivalve Tagelus plebeius, as typical fauna of low energy environments, being the bivalve Glycymeris longior and the gastropods Bostrycapulus odites and Buccinanops globulosus common species in both kinds of marine deposits. Approximately 90% of bivalves and 75-71% of gastropods of the marine fauna are recorded from MIS 5e to the present. According to the different descriptive analyses (Bray-Curtis Index and AC) the molluscan fauna was grouped in two and five assemblages respectively, defined by age, type of deposit, and presence and/or abundance of species. Marine species represented in the area of the Colorado River delta vary in abundance among the interglacials but not in faunal composition. One of the possible causes would be the global climatic changes (e.g., rise of sea surface temperature SST) and the heterogeneity of habitats that would have conditioned the development of the different faunal assemblages during the Quaternary.
Fil: Charo, Melisa Paola. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description The most recent Quaternary marine transgressions are well represented along the South Atlantic coast. In the Colorado River delta (39°15'S-39°55'S), south of Buenos Aires Province these deposits are mostly littoral ridges and tidal plains with abundant fossil marine fauna. Seventeen localities were analyzed (five Pleistocene, seven Holocene and five modern ones) representing the Interglacials ≥ MIS 9, MIS 5e and MIS 1. A total of 51 species were recorded (29 bivalves and 22 gastropods), together with nine micromolluscs. MIS 1 and the modern coast (37 and 42 species respectively) are the richest ones in species, unlike MIS 5e and MIS 9 (18 and 2 species respectively). In ≥MIS 9, the most abundant species is Pitar rostratus. MIS 5e and MIS 1 have in common the presence and abundance of the gastropod Heleobia australis and the bivalve Tagelus plebeius, as typical fauna of low energy environments, being the bivalve Glycymeris longior and the gastropods Bostrycapulus odites and Buccinanops globulosus common species in both kinds of marine deposits. Approximately 90% of bivalves and 75-71% of gastropods of the marine fauna are recorded from MIS 5e to the present. According to the different descriptive analyses (Bray-Curtis Index and AC) the molluscan fauna was grouped in two and five assemblages respectively, defined by age, type of deposit, and presence and/or abundance of species. Marine species represented in the area of the Colorado River delta vary in abundance among the interglacials but not in faunal composition. One of the possible causes would be the global climatic changes (e.g., rise of sea surface temperature SST) and the heterogeneity of habitats that would have conditioned the development of the different faunal assemblages during the Quaternary.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
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/11336/98810
Charo, Melisa Paola; Fucks, Enrique Eduardo; Gordillo, Sandra; Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology; Pergamon-Elsevier Science Ltd; Quaternary International; 377; 8-2015; 52-70
1040-6182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98810
identifier_str_mv Charo, Melisa Paola; Fucks, Enrique Eduardo; Gordillo, Sandra; Late Pleistocene-Recent marine malacological assemblages of the Colorado River delta (south of Buenos Aires Province): Paleoecology and paleoclimatology; Pergamon-Elsevier Science Ltd; Quaternary International; 377; 8-2015; 52-70
1040-6182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618215005121
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2015.05.025
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/msword
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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