Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años

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More than 50,000 sub-rounded shallow lakes fed by rain are found on sandy hills fed by rain in Corrientes Province. We selected two lakes near Saladas city as representative of the wetlands prevailing in the region. The aim of this study is to describe the changes in the ecological state of Soto...

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Autores principales: Poi, Alicia Susana Guadalupe, Casco, Sylvina Lorena, Neiff, Juan José, Carnevali, Romina Patricia, Gallardo, Luciana Irene
Formato: Artículo
Lenguaje:Español
Publicado: Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología "Raúl A. Ringuelet" 2022
Materias:
Shallow lakes
Subtropical wetlands
Alternative states
Eutrophication
Lagunas someras
Humedales subtropicales
Estados alternativos
Eutrofización
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/30708
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-30708
record_format dspace
spelling I48-R184-123456789-307082025-03-06T11:05:47Z Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años Poi, Alicia Susana Guadalupe Casco, Sylvina Lorena Neiff, Juan José Carnevali, Romina Patricia Gallardo, Luciana Irene Shallow lakes Subtropical wetlands Alternative states Eutrophication Lagunas someras Humedales subtropicales Estados alternativos Eutrofización More than 50,000 sub-rounded shallow lakes fed by rain are found on sandy hills fed by rain in Corrientes Province. We selected two lakes near Saladas city as representative of the wetlands prevailing in the region. The aim of this study is to describe the changes in the ecological state of Soto and Sánches lakes, from the use of the basin and recurrence of wet and dry periods. Thirty non periodic samplings were carried out in each lake between 1992 and 2014, during years with different rainfall regime. According to the annual precipitation we distinguish three periods: 1992-1999 (with high rainfalls); 2000-2010 (with prolonged droughts) and 2011-2014 (with heavy rains concentrated in autumn and spring). At both lakes the aquatic plant volume infested differed over the years. In the first period, Soto Lake became eutrophic due to illegal sewage connections from a new neighborhood. The high ratio depth/depth of the photic zone indicates the state of turbid water with dominance of cyanobacteria and high mean and maximum chlorophyll a. After operation of the treatment plant sewage, Soto Lake became characterized as mesotrophic during the dry period and subsequently oligotrophic. During the study period, Sánches Lake had clear water with a high phosphorus concentration, but it had a single bloom of cyanobacteria in the last period. In lakes fed by rain, long-term studies that include dry and wet periods allow for more accurate diagnosis of the ecological state. The use of different indicators, besides the nutrient content is recommended to determine the trophic state. En el paisaje de la Provincia de Corrientes se destacan numerosos cursos de agua orientados con rumbo NE-SO que drenan grandes regiones de esteros y son tributarios del río Paraná. Las lomadas arenosas que los confinan están cribadas por numerosas lagunas pequeñas (< 500 ha) y sub-redondeadas alimentadas por lluvias. La mayoría de ellas tienen baja salinidad, pH variable, buena disponibilidad de oxígeno disuelto en el agua, baja concentración de nitrógeno total y aguas transparentes colonizadas por vegetación sumergida y palustre (Poi y Galassi, 2013). 2022-02-03T14:13:34Z 2022-02-03T14:13:34Z 2016 Artículo Poi, Alicia Susana Guadalupe, et al., 2016. Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años. Biología Acuática. La Plata: Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología "Raúl A. Ringuelet", vol. 31, p. 1-6. ISSN 0326-1638. 1668-4869 http://repositorio.unne.edu.ar/handle/123456789/30708 spa https://revistas.unlp.edu.ar/bacuatica/article/view/6582 openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología "Raúl A. Ringuelet" Biología Acuática, 2016, vol. 31, p. 1-6.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Español
topic Shallow lakes
Subtropical wetlands
Alternative states
Eutrophication
Lagunas someras
Humedales subtropicales
Estados alternativos
Eutrofización
spellingShingle Shallow lakes
Subtropical wetlands
Alternative states
Eutrophication
Lagunas someras
Humedales subtropicales
Estados alternativos
Eutrofización
Poi, Alicia Susana Guadalupe
Casco, Sylvina Lorena
Neiff, Juan José
Carnevali, Romina Patricia
Gallardo, Luciana Irene
Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
topic_facet Shallow lakes
Subtropical wetlands
Alternative states
Eutrophication
Lagunas someras
Humedales subtropicales
Estados alternativos
Eutrofización
description More than 50,000 sub-rounded shallow lakes fed by rain are found on sandy hills fed by rain in Corrientes Province. We selected two lakes near Saladas city as representative of the wetlands prevailing in the region. The aim of this study is to describe the changes in the ecological state of Soto and Sánches lakes, from the use of the basin and recurrence of wet and dry periods. Thirty non periodic samplings were carried out in each lake between 1992 and 2014, during years with different rainfall regime. According to the annual precipitation we distinguish three periods: 1992-1999 (with high rainfalls); 2000-2010 (with prolonged droughts) and 2011-2014 (with heavy rains concentrated in autumn and spring). At both lakes the aquatic plant volume infested differed over the years. In the first period, Soto Lake became eutrophic due to illegal sewage connections from a new neighborhood. The high ratio depth/depth of the photic zone indicates the state of turbid water with dominance of cyanobacteria and high mean and maximum chlorophyll a. After operation of the treatment plant sewage, Soto Lake became characterized as mesotrophic during the dry period and subsequently oligotrophic. During the study period, Sánches Lake had clear water with a high phosphorus concentration, but it had a single bloom of cyanobacteria in the last period. In lakes fed by rain, long-term studies that include dry and wet periods allow for more accurate diagnosis of the ecological state. The use of different indicators, besides the nutrient content is recommended to determine the trophic state.
format Artículo
author Poi, Alicia Susana Guadalupe
Casco, Sylvina Lorena
Neiff, Juan José
Carnevali, Romina Patricia
Gallardo, Luciana Irene
author_facet Poi, Alicia Susana Guadalupe
Casco, Sylvina Lorena
Neiff, Juan José
Carnevali, Romina Patricia
Gallardo, Luciana Irene
author_sort Poi, Alicia Susana Guadalupe
title Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
title_short Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
title_full Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
title_fullStr Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
title_full_unstemmed Lagunas periurbanas de Corrientes Argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
title_sort lagunas periurbanas de corrientes argentina : de la mesotrofia a la eutrofia un camino de ida y vuelta en 20 años
publisher Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología "Raúl A. Ringuelet"
publishDate 2022
url http://repositorio.unne.edu.ar/handle/123456789/30708
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