Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina

The phytoplankton of the Matanza-Riachuelo river (Buenos Aires, Argentina) was studied for a period of 15 months together with different physical and chemical variables, along an increasingly eutrophic in character downstream. 281 taxa were recorded within a seasonal succession, among these 49 perce...

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Autores principales: Conforti, V., Alberghina, J., Urda, E.G.
Formato: JOUR
Materias:
Argentina
community structure
Matanza-Riachuelo river
phytoplankton
pollution
South America
eutrophication
species composition
Argentina, Buenos Aires, Matanza-Riachuelo River
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09251014_v4_n1_p59_Conforti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09251014_v4_n1_p59_Conforti2023-10-03T15:46:08Z Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina Conforti, V. Alberghina, J. Urda, E.G. Argentina community structure Matanza-Riachuelo river phytoplankton pollution South America eutrophication phytoplankton species composition Argentina, Buenos Aires, Matanza-Riachuelo River The phytoplankton of the Matanza-Riachuelo river (Buenos Aires, Argentina) was studied for a period of 15 months together with different physical and chemical variables, along an increasingly eutrophic in character downstream. 281 taxa were recorded within a seasonal succession, among these 49 percent were euglenophyta, 25 percent bacillariophyta, 15 percent chlorophyta and 10 percent cyanophyta. Multivariate procedures included cluster analyses and ordination by PCA of both species and samples, and stepwise multiple regression analyses were employed to assess the impact of the pollution on the phytoplankton. The effect of the alteration was different in each studied site. With one exception, the changes in the community structure described herein involved modifications of the basic species composition. According to the species present, it was deduced that the main pollutant was the high concentration of organic matter. Results of the Matanza-Riachuelo, Reconquista, and Luján Rivers studies are further discussed. © 1995 Kluwer Academic Publishers. Fil:Conforti, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alberghina, J. 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_09251014_v4_n1_p59_Conforti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
community structure
Matanza-Riachuelo river
phytoplankton
pollution
South America
eutrophication
phytoplankton
species composition
Argentina, Buenos Aires, Matanza-Riachuelo River
spellingShingle Argentina
community structure
Matanza-Riachuelo river
phytoplankton
pollution
South America
eutrophication
phytoplankton
species composition
Argentina, Buenos Aires, Matanza-Riachuelo River
Conforti, V.
Alberghina, J.
Urda, E.G.
Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
topic_facet Argentina
community structure
Matanza-Riachuelo river
phytoplankton
pollution
South America
eutrophication
phytoplankton
species composition
Argentina, Buenos Aires, Matanza-Riachuelo River
description The phytoplankton of the Matanza-Riachuelo river (Buenos Aires, Argentina) was studied for a period of 15 months together with different physical and chemical variables, along an increasingly eutrophic in character downstream. 281 taxa were recorded within a seasonal succession, among these 49 percent were euglenophyta, 25 percent bacillariophyta, 15 percent chlorophyta and 10 percent cyanophyta. Multivariate procedures included cluster analyses and ordination by PCA of both species and samples, and stepwise multiple regression analyses were employed to assess the impact of the pollution on the phytoplankton. The effect of the alteration was different in each studied site. With one exception, the changes in the community structure described herein involved modifications of the basic species composition. According to the species present, it was deduced that the main pollutant was the high concentration of organic matter. Results of the Matanza-Riachuelo, Reconquista, and Luján Rivers studies are further discussed. © 1995 Kluwer Academic Publishers.
format JOUR
author Conforti, V.
Alberghina, J.
Urda, E.G.
author_facet Conforti, V.
Alberghina, J.
Urda, E.G.
author_sort Conforti, V.
title Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
title_short Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
title_full Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
title_fullStr Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
title_full_unstemmed Structural changes and dynamics of the phytoplankton along a highly polluted lowland river of Argentina
title_sort structural changes and dynamics of the phytoplankton along a highly polluted lowland river of argentina
url http://hdl.handle.net/20.500.12110/paper_09251014_v4_n1_p59_Conforti
work_keys_str_mv AT confortiv structuralchangesanddynamicsofthephytoplanktonalongahighlypollutedlowlandriverofargentina
AT alberghinaj structuralchangesanddynamicsofthephytoplanktonalongahighlypollutedlowlandriverofargentina
AT urdaeg structuralchangesanddynamicsofthephytoplanktonalongahighlypollutedlowlandriverofargentina
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