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Abstract:

The phytoplankton of fifteen lowland courses of the River Plate Basin is compared and characterized by means of multivariate analyses. The cluster analysis performed with the more abundant species of each fluvial system reveals three main groups. Rivers with a high discharge and a large floodplain are grouped on the basis of the dominance of several Aulacoseira species. An eutrophic flora typified by Cyclotella meneghiniana, Synedra ulna and several green algae occurs in the smaller rivers with high conductivity, low transparency and important discharge variations. A third group comprises the Uruguay River and its tributaries, characterized by the presence of several pennatae diatoms and flagellates: Amphipleura pellucida, Surirella tenera, Terpsinoe musica, Navicula cuspidata, Eudorina elegans, Pandorina morum and Peridinium gatunense. The Principal Component Analysis based on a data matrix of physical, chemical and hydrological parameters revealed similar results. The ordination according to the first two components reflects the geographic location of these systems in the River Plate Basin, responding to a decreasing gradient of conductivity, pH and solids and an increasing minimum temperature. The rivers were ordinated by means of a Correspondence Analysis based on the main algal groups. © 1994 Kluwer Academic Publishers.

Registro:

Documento: Artículo
Título:Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
Autor:O'Farrell, I.
Filiación:Laboratorio de Limnología y Ficología. Departamento, de Biologia. Facultad de Ciencias Exactas y Naturales. Pab. II, Ciudad Universitaria, Nuñez, Buenos Aires, 1428, Argentina
Palabras clave:multivariate analysis; phytoplankton; River; South America; diatom; flagellate; green alga; phytoplankton; Argentina, Plate Basin; Amphipleura pellucida; Aulacoseira; Cyclotella meneghiniana; Eudorina elegans; Navicula cuspidata; Pandorina morum; Peridinium gatunense; Surirella tenera; Synedra ulna; Terpsinoe musica
Año:1994
Volumen:289
Número:1-3
Página de inicio:109
Página de fin:117
DOI: http://dx.doi.org/10.1007/BF00007413
Título revista:Hydrobiologia
Título revista abreviado:Hydrobiologia
ISSN:00188158
CODEN:HYDRB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v289_n1-3_p109_OFarrell

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Citas:

---------- APA ----------
(1994) . Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina). Hydrobiologia, 289(1-3), 109-117.
http://dx.doi.org/10.1007/BF00007413
---------- CHICAGO ----------
O'Farrell, I. "Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)" . Hydrobiologia 289, no. 1-3 (1994) : 109-117.
http://dx.doi.org/10.1007/BF00007413
---------- MLA ----------
O'Farrell, I. "Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)" . Hydrobiologia, vol. 289, no. 1-3, 1994, pp. 109-117.
http://dx.doi.org/10.1007/BF00007413
---------- VANCOUVER ----------
O'Farrell, I. Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina). Hydrobiologia. 1994;289(1-3):109-117.
http://dx.doi.org/10.1007/BF00007413