Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers

The phytoplankton of three island ponds (Los Pájaros, Catay and Turbia) (27°25’S; 58°45’W) in the begening of Paraná river floodplain were studied. These ponds are periodically flooded by the river. Catay pond was in pennanent contact with the riverwhile the other two were flooded during high water...

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Autor principal: Zalocar de Domitrovic, Yolanda
Formato: Artículo revista
Lenguaje:Español
Publicado: Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023
Acceso en línea:https://revistas.unne.edu.ar/index.php/eco/article/view/7069
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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spelling I48-R154-article-70692023-12-01T20:20:03Z Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers Efecto de las fluctuaciones del nivel hidrométrico sobre el fitoplancton en tres lagunas isleñas en el área de la confluencia de los ríos Paraná y Paraguay Zalocar de Domitrovic, Yolanda The phytoplankton of three island ponds (Los Pájaros, Catay and Turbia) (27°25’S; 58°45’W) in the begening of Paraná river floodplain were studied. These ponds are periodically flooded by the river. Catay pond was in pennanent contact with the riverwhile the other two were flooded during high water periods.Sampling was carried out during 1978-1980. Cell counts were madeby the U termohl method. Population density and diversity and were analyzed. Cell density were comparatively highest (1733, 2084 and 1028 ind. ml4 in Pájaros, Catay and Turbiaponds, respectively) either when hydrometric level was slowly increasing or after small flood phases. On the contrary, cell density were lowest in coincidence with strong flooding phases (83,73 and 57 ind. mi'1, respectively). Catay pond, the one which is in pennanent contact with the river showed highest both population density and diversity. During high water periods strong similarity ainong three ponds were observed.In Pájaros and Catay ponds Chlorophyceae (Monoraphidium, Schroederia and Scenedesmus), Ciyptophyceae (Cryp tomonas spp.) and Diatomophyceae A ulacoseira granúlala) were dominant. In the Turbia pond Euglenophyceae (Traclielomonasvolvocina) and Cryptophyceae (Cryptomonas spp.) were dominant.Nannoplankton represented between 60 and 90% of the total in all the studied ponds. .The phytoplankton of three island ponds (Los Pájaros, Catay and Turbia) (27°25’S; 58°45’W) in the begening of Paraná river floodplain were studied. These ponds are periodically flooded by the river. Catay pond was in pennanent contact with the riverwhile the other two were flooded during high water periods.Sampling was carried out during 1978-1980. Cell counts were madeby the U termohl method. Population density and diversity and were analyzed. Cell density were comparatively highest (1733, 2084 and 1028 ind. ml4 in Pájaros, Catay and Turbiaponds, respectively) either when hydrometric level was slowly increasing or after small flood phases. On the contrary, cell density were lowest in coincidence with strong flooding phases (83,73 and 57 ind. mi'1, respectively). Catay pond, the one which is in pennanent contact with the river showed highest both population density and diversity. During high water periods strong similarity ainong three ponds were observed.In Pájaros and Catay ponds Chlorophyceae (Monoraphidium, Schroederia and Scenedesmus), Ciyptophyceae (Cryp tomonas spp.) and Diatomophyceae A ulacoseira granúlala) were dominant. In the Turbia pond Euglenophyceae (Traclielomonasvolvocina) and Cryptophyceae (Cryptomonas spp.) were dominant.Nannoplankton represented between 60 and 90% of the total in all the studied ponds. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023-11-29 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/7069 10.30972/eco.16277069 Ecosur; 1990: vol. 16, no. 27; 13-29 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/7069/6550
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 Zalocar de Domitrovic, Yolanda
spellingShingle Zalocar de Domitrovic, Yolanda
Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
author_facet Zalocar de Domitrovic, Yolanda
author_sort Zalocar de Domitrovic, Yolanda
title Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
title_short Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
title_full Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
title_fullStr Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
title_full_unstemmed Effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of Paraná and Paraguay rivers
title_sort effects of hydrometic level fluctuation on phytoplankton in three ponds in the area of the confluence of paraná and paraguay rivers
description The phytoplankton of three island ponds (Los Pájaros, Catay and Turbia) (27°25’S; 58°45’W) in the begening of Paraná river floodplain were studied. These ponds are periodically flooded by the river. Catay pond was in pennanent contact with the riverwhile the other two were flooded during high water periods.Sampling was carried out during 1978-1980. Cell counts were madeby the U termohl method. Population density and diversity and were analyzed. Cell density were comparatively highest (1733, 2084 and 1028 ind. ml4 in Pájaros, Catay and Turbiaponds, respectively) either when hydrometric level was slowly increasing or after small flood phases. On the contrary, cell density were lowest in coincidence with strong flooding phases (83,73 and 57 ind. mi'1, respectively). Catay pond, the one which is in pennanent contact with the river showed highest both population density and diversity. During high water periods strong similarity ainong three ponds were observed.In Pájaros and Catay ponds Chlorophyceae (Monoraphidium, Schroederia and Scenedesmus), Ciyptophyceae (Cryp tomonas spp.) and Diatomophyceae A ulacoseira granúlala) were dominant. In the Turbia pond Euglenophyceae (Traclielomonasvolvocina) and Cryptophyceae (Cryptomonas spp.) were dominant.Nannoplankton represented between 60 and 90% of the total in all the studied ponds.
publisher Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
publishDate 2023
url https://revistas.unne.edu.ar/index.php/eco/article/view/7069
work_keys_str_mv AT zalocardedomitrovicyolanda effectsofhydrometiclevelfluctuationonphytoplanktoninthreepondsintheareaoftheconfluenceofparanaandparaguayrivers
AT zalocardedomitrovicyolanda efectodelasfluctuacionesdelnivelhidrometricosobreelfitoplanctonentreslagunasislenasenelareadelaconfluenciadelosriosparanayparaguay
first_indexed 2024-08-21T22:38:49Z
last_indexed 2024-08-21T22:38:49Z
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