Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds

This paper deals with the principal limnological features of the Totoras and González ponds, selected among those belonging to the Riachuelo River basin for their interesting and contrasting general characteristics. The study has been carried out along an annual cycle by means of monthly sampling op...

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Autores principales: Bonetto, Argentino A., Corrales, Marta Angélica, Varela, María E., Rivero, María M., Bonetto, Carlos A., Vallejos, Ramón E., Zalakar, Yolanda
Formato: Artículo revista
Lenguaje:Español
Publicado: Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2024
Acceso en línea:https://revistas.unne.edu.ar/index.php/eco/article/view/7702
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-7702
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spelling I48-R154-article-77022024-08-20T12:45:36Z Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds Estudios Limnológicos en la Cuenca del Riachuelo (Corrientes, Argentina). II. Lagunas Totoras y González Bonetto, Argentino A. Corrales, Marta Angélica Varela, María E. Rivero, María M. Bonetto, Carlos A. Vallejos, Ramón E. Zalakar, Yolanda This paper deals with the principal limnological features of the Totoras and González ponds, selected among those belonging to the Riachuelo River basin for their interesting and contrasting general characteristics. The study has been carried out along an annual cycle by means of monthly sampling operations, considering the main physical and Chemical properties, the phytoplankton, zooplankton, benthos, fish populations, as well as the primary production and related parameters. According to the obtained data, such water bodies present extreme trophic conditions. The Totoras pond is of moderate eutrophy, with high biotic diversity, clear water, great part of the bottom colonized by submerged macrophytes and psammitic algae, with a thick cover of organic detritus in the central area although the dissolved oxigen was never less than 50 % saturation. The profile of primary production shows a good development in depth, having the maximun rate of carbon fixation at 1 or 2 meters and phtosynthetic inhibition in a superficial layer. The González pond, by the contrary, is largely euthrophic, with very turbid waters, bottom without macrophytes, low biotic diversity, and a practically constant bloom of blue green algae. The dissolved oxigen was reduced to the bottom but without exhaustation because of the wind action. The primary production of phytoplankton was very high but restricted to the upper layer. This paper deals with the principal limnological features of the Totoras and González ponds, selected among those belonging to the Riachuelo River basin for their interesting and contrasting general characteristics. The study has been carried out along an annual cycle by means of monthly sampling operations, considering the main physical and Chemical properties, the phytoplankton, zooplankton, benthos, fish populations, as well as the primary production and related parameters. According to the obtained data, such water bodies present extreme trophic conditions. The Totoras pond is of moderate eutrophy, with high biotic diversity, clear water, great part of the bottom colonized by submerged macrophytes and psammitic algae, with a thick cover of organic detritus in the central area although the dissolved oxigen was never less than 50 % saturation. The profile of primary production shows a good development in depth, having the maximun rate of carbon fixation at 1 or 2 meters and phtosynthetic inhibition in a superficial layer. The González pond, by the contrary, is largely euthrophic, with very turbid waters, bottom without macrophytes, low biotic diversity, and a practically constant bloom of blue green algae. The dissolved oxigen was reduced to the bottom but without exhaustation because of the wind action. The primary production of phytoplankton was very high but restricted to the upper layer. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2024-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/7702 Ecosur; 1978: vol. 5, no. 9; 17-55 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/7702/7229
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
author Bonetto, Argentino A.
Corrales, Marta Angélica
Varela, María E.
Rivero, María M.
Bonetto, Carlos A.
Vallejos, Ramón E.
Zalakar, Yolanda
spellingShingle Bonetto, Argentino A.
Corrales, Marta Angélica
Varela, María E.
Rivero, María M.
Bonetto, Carlos A.
Vallejos, Ramón E.
Zalakar, Yolanda
Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
author_facet Bonetto, Argentino A.
Corrales, Marta Angélica
Varela, María E.
Rivero, María M.
Bonetto, Carlos A.
Vallejos, Ramón E.
Zalakar, Yolanda
author_sort Bonetto, Argentino A.
title Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
title_short Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
title_full Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
title_fullStr Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
title_full_unstemmed Limnological studies in the Riachuelo River basin (Corrientes, Argentina). II. Totoras and González Ponds
title_sort limnological studies in the riachuelo river basin (corrientes, argentina). ii. totoras and gonzález ponds
description This paper deals with the principal limnological features of the Totoras and González ponds, selected among those belonging to the Riachuelo River basin for their interesting and contrasting general characteristics. The study has been carried out along an annual cycle by means of monthly sampling operations, considering the main physical and Chemical properties, the phytoplankton, zooplankton, benthos, fish populations, as well as the primary production and related parameters. According to the obtained data, such water bodies present extreme trophic conditions. The Totoras pond is of moderate eutrophy, with high biotic diversity, clear water, great part of the bottom colonized by submerged macrophytes and psammitic algae, with a thick cover of organic detritus in the central area although the dissolved oxigen was never less than 50 % saturation. The profile of primary production shows a good development in depth, having the maximun rate of carbon fixation at 1 or 2 meters and phtosynthetic inhibition in a superficial layer. The González pond, by the contrary, is largely euthrophic, with very turbid waters, bottom without macrophytes, low biotic diversity, and a practically constant bloom of blue green algae. The dissolved oxigen was reduced to the bottom but without exhaustation because of the wind action. The primary production of phytoplankton was very high but restricted to the upper layer.
publisher Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
publishDate 2024
url https://revistas.unne.edu.ar/index.php/eco/article/view/7702
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first_indexed 2024-08-21T22:39:09Z
last_indexed 2024-08-21T22:39:09Z
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