Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)

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The changes in zooplankton composition at Lacombe Lake during two annual cycles related to environmental (rainfall, hydrometric level, conductivity, transparency and nutrients) and biotic factors (phytoplankton palatability and presence of submerged macrophytes) were analyzed. The shallow lake showe...

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Detalles Bibliográficos
Autores principales: Ardohain, Diego Martín, Benítez, Hernán Hugo, Gabellone, Néstor Adrían, Claps, Maria Cristina
Formato: Articulo
Lenguaje:Español
Publicado: 2014
Materias:
Ciencias Naturales
zooplankton; Pampean shallow lake; annual cycles; equilibria state
Lagunas
Zooplancton
zooplancton; laguna pampeana; ciclos anuales; estado de equilibrio
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/52931
http://www.bacuatica.org/index.php/bacuatica/article/view/18/4
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-52931
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
zooplankton; Pampean shallow lake; annual cycles; equilibria state
Lagunas
Zooplancton
zooplancton; laguna pampeana; ciclos anuales; estado de equilibrio
spellingShingle Ciencias Naturales
zooplankton; Pampean shallow lake; annual cycles; equilibria state
Lagunas
Zooplancton
zooplancton; laguna pampeana; ciclos anuales; estado de equilibrio
Ardohain, Diego Martín
Benítez, Hernán Hugo
Gabellone, Néstor Adrían
Claps, Maria Cristina
Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
topic_facet Ciencias Naturales
zooplankton; Pampean shallow lake; annual cycles; equilibria state
Lagunas
Zooplancton
zooplancton; laguna pampeana; ciclos anuales; estado de equilibrio
description The changes in zooplankton composition at Lacombe Lake during two annual cycles related to environmental (rainfall, hydrometric level, conductivity, transparency and nutrients) and biotic factors (phytoplankton palatability and presence of submerged macrophytes) were analyzed. The shallow lake showed alternating periods of turbid and clear water associated with phytoplankton density and occasional colonization of the lake by submerged macrophytes (Potamogeton pectinatus (L.) and Myriophyllum quitense Kunth). The MDS ordination analysis based on environmental data showed a clear separation of clear and turbid water periods but the division became more diffuse when the analysis performed was based on zooplankton species density. The results of SIMPER analysis indicated that the quality (palatable nanoplankton) and quantity of phytoplankton constituted the most important variable in both annual cycles for the period characterization, while pH, chlorophyll a and turbidity were relevant in 2001-2002 period, and hydrometric level, conductivity and transparency in 2005-2006. Some euplanktonic rotifers were relevant during turbid periods (Brachionus caudatus Barrois & Daday, B. havanaensis Rousselet, Filinia longiseta (Ehr.), Keratella lenzi (Hauer), K. tropica (Apstein), Polyarthra vulgaris Carlin) whereas crustaceans achieved their maximum density during clear periods (Notodiaptomus incompositus (Brian), Microcyclops alius (Kiefer), Metacyclops mendocinus (Wierzejski) and Ceriodaphnia cf. dubia). In both annual cycles, the zooplankton maintained similar composition in this seepage shallow lake in spite of the occurrence of contrasting environmental conditions.
format Articulo
Articulo
author Ardohain, Diego Martín
Benítez, Hernán Hugo
Gabellone, Néstor Adrían
Claps, Maria Cristina
author_facet Ardohain, Diego Martín
Benítez, Hernán Hugo
Gabellone, Néstor Adrían
Claps, Maria Cristina
author_sort Ardohain, Diego Martín
title Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
title_short Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
title_full Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
title_fullStr Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
title_full_unstemmed Respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna Lacombe)
title_sort respuesta de la estructura zooplanctónica a cambios físicos y biológicos en una laguna pampásica (laguna lacombe)
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/52931
http://www.bacuatica.org/index.php/bacuatica/article/view/18/4
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