Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis

Multiproxy analyses are efficient approaches in palaeoenvironmental reconstructions since they contemplate the different responses of various taxonomic groups to external changes. In this study, we analyse changes in molluscs and ostracod palaeocommunities to reconstruct the environments and their H...

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Autores principales: Pisano, María Florencia, Cusminsky, Gabriela Catalina, Fucks, Enrique Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Naturales
Holocene
Argentine Pampas
calcareous microfossils
continental palaeoenvironments
multiproxy analyses
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/169106
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-169106
record_format dspace
spelling I19-R120-10915-1691062024-08-26T20:04:37Z http://sedici.unlp.edu.ar/handle/10915/169106 Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis Pisano, María Florencia Cusminsky, Gabriela Catalina Fucks, Enrique Eduardo 2023-12-19 2024-08-26T18:14:24Z en Ciencias Naturales Holocene Argentine Pampas calcareous microfossils continental palaeoenvironments multiproxy analyses Multiproxy analyses are efficient approaches in palaeoenvironmental reconstructions since they contemplate the different responses of various taxonomic groups to external changes. In this study, we analyse changes in molluscs and ostracod palaeocommunities to reconstruct the environments and their Holocene evolution in the Salado River, Pampa Deprimida of Argentina. We assessed the temporal and spatial variation of the assemblages from the Alberti-Pla, Ruta 30, and Vientos de Mar localities through various analytical techniques, including analysis of similarity (ANOSIM) and ordination methods such as non-metric multidimensional scaling (NMDS), detrended correspondence analysis (DCA), and principal component analysis (PCA). Eleven species of gastropods were identified, among which Heleobia parchappii, Biomphalaria peregrina, and Succinea meridionalis stand out for their abundance. Nine species of ostracods were recognised, with Limnocythere cusminskyae, Cypridopsis vidua, Heterocypris similis, and Cyprideis salebrosa being the most important. The changes in the assemblages allowed us to infer the paleoenvironmental evolution in the area. During the Late Pleistocene and Early Holocene, drier conditions led to ephemeral, marshy freshwater environments with fluctuating water levels and salinities. In the Late Holocene, increased precipitation caused water levels to rise, resulting in more stable and interconnected freshwater environments. Centro de Estudios Integrales de la Dinámica Exógena Consejo Nacional de Investigaciones Científicas y Técnicas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Holocene
Argentine Pampas
calcareous microfossils
continental palaeoenvironments
multiproxy analyses
spellingShingle Ciencias Naturales
Holocene
Argentine Pampas
calcareous microfossils
continental palaeoenvironments
multiproxy analyses
Pisano, María Florencia
Cusminsky, Gabriela Catalina
Fucks, Enrique Eduardo
Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
topic_facet Ciencias Naturales
Holocene
Argentine Pampas
calcareous microfossils
continental palaeoenvironments
multiproxy analyses
description Multiproxy analyses are efficient approaches in palaeoenvironmental reconstructions since they contemplate the different responses of various taxonomic groups to external changes. In this study, we analyse changes in molluscs and ostracod palaeocommunities to reconstruct the environments and their Holocene evolution in the Salado River, Pampa Deprimida of Argentina. We assessed the temporal and spatial variation of the assemblages from the Alberti-Pla, Ruta 30, and Vientos de Mar localities through various analytical techniques, including analysis of similarity (ANOSIM) and ordination methods such as non-metric multidimensional scaling (NMDS), detrended correspondence analysis (DCA), and principal component analysis (PCA). Eleven species of gastropods were identified, among which Heleobia parchappii, Biomphalaria peregrina, and Succinea meridionalis stand out for their abundance. Nine species of ostracods were recognised, with Limnocythere cusminskyae, Cypridopsis vidua, Heterocypris similis, and Cyprideis salebrosa being the most important. The changes in the assemblages allowed us to infer the paleoenvironmental evolution in the area. During the Late Pleistocene and Early Holocene, drier conditions led to ephemeral, marshy freshwater environments with fluctuating water levels and salinities. In the Late Holocene, increased precipitation caused water levels to rise, resulting in more stable and interconnected freshwater environments.
format Articulo
Articulo
author Pisano, María Florencia
Cusminsky, Gabriela Catalina
Fucks, Enrique Eduardo
author_facet Pisano, María Florencia
Cusminsky, Gabriela Catalina
Fucks, Enrique Eduardo
author_sort Pisano, María Florencia
title Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
title_short Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
title_full Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
title_fullStr Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
title_full_unstemmed Quaternary environmental evolution of the Argentinean Pampa Deprimida based on mollusc and ostracod analysis
title_sort quaternary environmental evolution of the argentinean pampa deprimida based on mollusc and ostracod analysis
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/169106
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AT cusminskygabrielacatalina quaternaryenvironmentalevolutionoftheargentineanpampadeprimidabasedonmolluscandostracodanalysis
AT fucksenriqueeduardo quaternaryenvironmentalevolutionoftheargentineanpampadeprimidabasedonmolluscandostracodanalysis
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