Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)

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 a...

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Autor principal:	O'Farrell, I.
Formato:	JOUR
Materias:	multivariate analysis phytoplankton River South America diatom flagellate green alga Argentina, Plate Basin Amphipleura pellucida Aulacoseira Cyclotella meneghiniana Eudorina elegans Navicula cuspidata Pandorina morum Peridinium gatunense Surirella tenera Synedra ulna Terpsinoe musica
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00188158_v289_n1-3_p109_OFarrell
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_00188158_v289_n1-3_p109_OFarrell2023-10-03T14:15:44Z Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina) O'Farrell, I. 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 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. Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00188158_v289_n1-3_p109_OFarrell
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 O'Farrell, I. Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
topic_facet	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
description	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.
format	JOUR
author	O'Farrell, I.
author_facet	O'Farrell, I.
author_sort	O'Farrell, I.
title	Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
title_short	Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
title_full	Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
title_fullStr	Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
title_full_unstemmed	Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)
title_sort	comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the river plate basin (argentina)
url	http://hdl.handle.net/20.500.12110/paper_00188158_v289_n1-3_p109_OFarrell
work_keys_str_mv	AT ofarrelli comparativeanalysisofthephytoplanktonoffifteenlowlandfluvialsystemsoftheriverplatebasinargentina
_version_	1807323874132492288

Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina)

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