Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)

We analyzed the seasonal variation of the phycoflora in the Colorado River alluvium with the aim of expanding knowledge of algal biodiversity in lotic environments of the province of La Pampa. The study area is located in the middle basin of the Colorado River (38º 49’ S and 64º 59’ W), Lihue Calel,...

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Detalles Bibliográficos
Autores principales: Biasotti, A. E., Álvarez, S. B., Bazán, Graciela Inés, Martínez de Fabricius, A. L.
Formato: Articulo
Lenguaje:Español
Publicado: 2014
Materias:
Ciencias Naturales
ficoflora
La Pampa (Argentina)
Fitoplancton
ambientes lóticos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/56941
http://www.bacuatica.org/index.php/bacuatica/article/view/38
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-56941
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
ficoflora
La Pampa (Argentina)
Fitoplancton
ambientes lóticos
spellingShingle Ciencias Naturales
ficoflora
La Pampa (Argentina)
Fitoplancton
ambientes lóticos
Biasotti, A. E.
Álvarez, S. B.
Bazán, Graciela Inés
Martínez de Fabricius, A. L.
Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
topic_facet Ciencias Naturales
ficoflora
La Pampa (Argentina)
Fitoplancton
ambientes lóticos
description We analyzed the seasonal variation of the phycoflora in the Colorado River alluvium with the aim of expanding knowledge of algal biodiversity in lotic environments of the province of La Pampa. The study area is located in the middle basin of the Colorado River (38º 49’ S and 64º 59’ W), Lihue Calel, which is the natural limit between La Pampa and Río Negro provinces. The site is located 122 meters above sea level with a channel width of 113 m. Samples were collected according to the standard methodology for lotic environments during autumn 2010 - autumn 2011. Physicochemical parameters were measured in situ. Water temperature ranged from 3.4 to 24°C for winter and summer respectively. The pH ranged between 8.1 and 8.6, the conductivity varied between 938 and 1950 μS cm-1 and the flow velocity ranged between 0.5 and 0.9 m sec-1. Phytoplankton samples were deposited in the Herbarium SRFA (UNLPam). 163 taxa were identified mostly belonging to Bacillariophyceae (42%). Chlorophyceae contributed 36%, while 17% Cyanobacteria, Euglenophyceae, Dinophyceae, Rhodophyceae and Xanthophyceae were found as companions taxa. The similarity of biodiversity in the alluvial section of the Colorado River is almost 70% as observed in the dendrogram resulting from the application of the Bray Curtis index, and grouped according to a seasonal sampling sequence.
format Articulo
Articulo
author Biasotti, A. E.
Álvarez, S. B.
Bazán, Graciela Inés
Martínez de Fabricius, A. L.
author_facet Biasotti, A. E.
Álvarez, S. B.
Bazán, Graciela Inés
Martínez de Fabricius, A. L.
author_sort Biasotti, A. E.
title Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
title_short Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
title_full Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
title_fullStr Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
title_full_unstemmed Variación estacional de la comunidad microfitoplanctónica del curso medio del río Colorado (La Pampa, Argentina)
title_sort variación estacional de la comunidad microfitoplanctónica del curso medio del río colorado (la pampa, argentina)
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/56941
http://www.bacuatica.org/index.php/bacuatica/article/view/38
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