Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina

Shallow lakes are distinctive aquatic ecosystems of the Pampean region. In this paper, climatic, morphometric and chemical-environmental aspects of six lacustrine bodies of the Salado River basin, Buenos Aires, are analyzed. The climatic variability of the region was estimated and linked to the beha...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Pisano, María Florencia, D'Amico, Gabriela Mariana, Ramos, Nicolás Andrés, Pommarés, Nicole Nadín, Fucks, Enrique Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Naturales
Pampean shallow lakes
Salado River
Morphometry
Hydrochemistry
Anthropic intervention
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/169677
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-169677
record_format dspace
spelling I19-R120-10915-1696772024-09-05T20:05:29Z http://sedici.unlp.edu.ar/handle/10915/169677 Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina Pisano, María Florencia D'Amico, Gabriela Mariana Ramos, Nicolás Andrés Pommarés, Nicole Nadín Fucks, Enrique Eduardo 2019-12-12 2024-09-05T14:10:12Z en Ciencias Naturales Pampean shallow lakes Salado River Morphometry Hydrochemistry Anthropic intervention Shallow lakes are distinctive aquatic ecosystems of the Pampean region. In this paper, climatic, morphometric and chemical-environmental aspects of six lacustrine bodies of the Salado River basin, Buenos Aires, are analyzed. The climatic variability of the region was estimated and linked to the behavior of each water body during the studied period (2017–2018); precipitations displayed deviations from the mean values, with periods of deficit in spring and summer, and excess in autumn. The analysis of satellite images showed a group of lakes with very low variation of the morphometric parameters because they have gates that keep the water level constant. On the contrary, those without anthropic intervention displayed a greater morphometric variability, since the water levels have been directly linked to local weather fluctuations. From a chemical-environmental perspective, changes were observed both at the regional (p = 0.015) and local (p = 0.0014) levels. Differences among sites cannot be characterized by a single variable but by a set of them. The dominant cation in the Pampean shallow lakes is the Na+ coming from the contact of groundwater with loessic sediments. Lakes showed a particular anionic dominance that not following a seasonal but a particular pattern. These are mainly linked to the characteristics of the substrate (presence of marine sediments or gypsum deposits). The great vulnerability of these environments to global and regional climatic changes, anthropic modifications and a large number of shallow lakes in the area, allow finding different scenarios (geomorphological, ecological, hydrogeological, etc.) to assess their vulnerability and predict their behavior against future climate scenarios in an economically important area for Argentine. Centro de Estudios Integrales de la Dinámica Exógena Consejo Nacional de Investigaciones Científicas y Técnicas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 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
Pampean shallow lakes
Salado River
Morphometry
Hydrochemistry
Anthropic intervention
spellingShingle Ciencias Naturales
Pampean shallow lakes
Salado River
Morphometry
Hydrochemistry
Anthropic intervention
Pisano, María Florencia
D'Amico, Gabriela Mariana
Ramos, Nicolás Andrés
Pommarés, Nicole Nadín
Fucks, Enrique Eduardo
Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
topic_facet Ciencias Naturales
Pampean shallow lakes
Salado River
Morphometry
Hydrochemistry
Anthropic intervention
description Shallow lakes are distinctive aquatic ecosystems of the Pampean region. In this paper, climatic, morphometric and chemical-environmental aspects of six lacustrine bodies of the Salado River basin, Buenos Aires, are analyzed. The climatic variability of the region was estimated and linked to the behavior of each water body during the studied period (2017–2018); precipitations displayed deviations from the mean values, with periods of deficit in spring and summer, and excess in autumn. The analysis of satellite images showed a group of lakes with very low variation of the morphometric parameters because they have gates that keep the water level constant. On the contrary, those without anthropic intervention displayed a greater morphometric variability, since the water levels have been directly linked to local weather fluctuations. From a chemical-environmental perspective, changes were observed both at the regional (p = 0.015) and local (p = 0.0014) levels. Differences among sites cannot be characterized by a single variable but by a set of them. The dominant cation in the Pampean shallow lakes is the Na+ coming from the contact of groundwater with loessic sediments. Lakes showed a particular anionic dominance that not following a seasonal but a particular pattern. These are mainly linked to the characteristics of the substrate (presence of marine sediments or gypsum deposits). The great vulnerability of these environments to global and regional climatic changes, anthropic modifications and a large number of shallow lakes in the area, allow finding different scenarios (geomorphological, ecological, hydrogeological, etc.) to assess their vulnerability and predict their behavior against future climate scenarios in an economically important area for Argentine.
format Articulo
Articulo
author Pisano, María Florencia
D'Amico, Gabriela Mariana
Ramos, Nicolás Andrés
Pommarés, Nicole Nadín
Fucks, Enrique Eduardo
author_facet Pisano, María Florencia
D'Amico, Gabriela Mariana
Ramos, Nicolás Andrés
Pommarés, Nicole Nadín
Fucks, Enrique Eduardo
author_sort Pisano, María Florencia
title Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
title_short Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
title_full Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
title_fullStr Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
title_full_unstemmed Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina
title_sort factors that control the seasonal dynamics of the shallow lakes in the pampean region, buenos aires, argentina
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/169677
work_keys_str_mv AT pisanomariaflorencia factorsthatcontroltheseasonaldynamicsoftheshallowlakesinthepampeanregionbuenosairesargentina
AT damicogabrielamariana factorsthatcontroltheseasonaldynamicsoftheshallowlakesinthepampeanregionbuenosairesargentina
AT ramosnicolasandres factorsthatcontroltheseasonaldynamicsoftheshallowlakesinthepampeanregionbuenosairesargentina
AT pommaresnicolenadin factorsthatcontroltheseasonaldynamicsoftheshallowlakesinthepampeanregionbuenosairesargentina
AT fucksenriqueeduardo factorsthatcontroltheseasonaldynamicsoftheshallowlakesinthepampeanregionbuenosairesargentina
_version_ 1809774312401403904

Ejemplares similares