Phytoplankton of the middle and lower stretches of the Uruguay River

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The Uruguay River is one of the largest lowland rivers of South America. At its middle section, its course is altered by the Salto Grande Reservoir, which constitutes a discontinuity factor affecting the main limnological characteristics and the plankton communities. In this chapter we present a rev...

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Autores principales:	O'Farrell, Inés, Izaguirre, Irina
Publicado:	2014
Materias:	Cyanobacteria blooms River Salto Grande Reservoir abundance community structure diatom discharge dominance high temperature intertidal environment limnology phytoplankton seasonality stabilization water column Uruguay River Bacillariophyta Chlorophyceae Cryptophyta Cyanobacteria
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1612166X_v65_n_p113_OFarrell http://hdl.handle.net/20.500.12110/paper_1612166X_v65_n_p113_OFarrell
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1612166X_v65_n_p113_OFarrell
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spelling	paper:paper_1612166X_v65_n_p113_OFarrell2023-06-08T16:25:08Z Phytoplankton of the middle and lower stretches of the Uruguay River O'Farrell, Inés Izaguirre, Irina Cyanobacteria blooms River Salto Grande Reservoir abundance community structure diatom discharge dominance high temperature intertidal environment limnology phytoplankton seasonality stabilization water column Salto Grande Reservoir Uruguay River Bacillariophyta Chlorophyceae Cryptophyta Cyanobacteria The Uruguay River is one of the largest lowland rivers of South America. At its middle section, its course is altered by the Salto Grande Reservoir, which constitutes a discontinuity factor affecting the main limnological characteristics and the plankton communities. In this chapter we present a review of the available information on the phytoplankton of the middle and lower stretches since 1978, a short time before the start of the Salto Grande dam operation. The studies show that phytoplankton communities are regulated by two main forces: water discharge and seasonality, with higher phytoplankton abundances usually associated to the warm season, and lower ones to high water discharge. Human activities in the river basin have been inducing changes in the potamoplankton. From the 70's to the 90's the studies reported that potamoplankton was dominated by diatoms, with chlorophyceans co-dominating in summer. During the last decade, the phytoplankton assemblage showed a higher proportion of cryptophytes, which together with diatoms and chlorophyceans, conform the typical potamoplankton of the river. Recently, blooms of Cyanobacteria appeared in the river during the summer, mainly near the littoral zone, favoured by a combination of high temperatures and enhanced water column stability. © 2014 E. Schweizerbart'sche Verlagsbuchhandlung, 70176 Stuttgart, Germany. Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Izaguirre, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1612166X_v65_n_p113_OFarrell http://hdl.handle.net/20.500.12110/paper_1612166X_v65_n_p113_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	Cyanobacteria blooms River Salto Grande Reservoir abundance community structure diatom discharge dominance high temperature intertidal environment limnology phytoplankton seasonality stabilization water column Salto Grande Reservoir Uruguay River Bacillariophyta Chlorophyceae Cryptophyta Cyanobacteria
spellingShingle	Cyanobacteria blooms River Salto Grande Reservoir abundance community structure diatom discharge dominance high temperature intertidal environment limnology phytoplankton seasonality stabilization water column Salto Grande Reservoir Uruguay River Bacillariophyta Chlorophyceae Cryptophyta Cyanobacteria O'Farrell, Inés Izaguirre, Irina Phytoplankton of the middle and lower stretches of the Uruguay River
topic_facet	Cyanobacteria blooms River Salto Grande Reservoir abundance community structure diatom discharge dominance high temperature intertidal environment limnology phytoplankton seasonality stabilization water column Salto Grande Reservoir Uruguay River Bacillariophyta Chlorophyceae Cryptophyta Cyanobacteria
description	The Uruguay River is one of the largest lowland rivers of South America. At its middle section, its course is altered by the Salto Grande Reservoir, which constitutes a discontinuity factor affecting the main limnological characteristics and the plankton communities. In this chapter we present a review of the available information on the phytoplankton of the middle and lower stretches since 1978, a short time before the start of the Salto Grande dam operation. The studies show that phytoplankton communities are regulated by two main forces: water discharge and seasonality, with higher phytoplankton abundances usually associated to the warm season, and lower ones to high water discharge. Human activities in the river basin have been inducing changes in the potamoplankton. From the 70's to the 90's the studies reported that potamoplankton was dominated by diatoms, with chlorophyceans co-dominating in summer. During the last decade, the phytoplankton assemblage showed a higher proportion of cryptophytes, which together with diatoms and chlorophyceans, conform the typical potamoplankton of the river. Recently, blooms of Cyanobacteria appeared in the river during the summer, mainly near the littoral zone, favoured by a combination of high temperatures and enhanced water column stability. © 2014 E. Schweizerbart'sche Verlagsbuchhandlung, 70176 Stuttgart, Germany.
author	O'Farrell, Inés Izaguirre, Irina
author_facet	O'Farrell, Inés Izaguirre, Irina
author_sort	O'Farrell, Inés
title	Phytoplankton of the middle and lower stretches of the Uruguay River
title_short	Phytoplankton of the middle and lower stretches of the Uruguay River
title_full	Phytoplankton of the middle and lower stretches of the Uruguay River
title_fullStr	Phytoplankton of the middle and lower stretches of the Uruguay River
title_full_unstemmed	Phytoplankton of the middle and lower stretches of the Uruguay River
title_sort	phytoplankton of the middle and lower stretches of the uruguay river
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1612166X_v65_n_p113_OFarrell http://hdl.handle.net/20.500.12110/paper_1612166X_v65_n_p113_OFarrell
work_keys_str_mv	AT ofarrellines phytoplanktonofthemiddleandlowerstretchesoftheuruguayriver AT izaguirreirina phytoplanktonofthemiddleandlowerstretchesoftheuruguayriver
_version_	1768543964819881984

Phytoplankton of the middle and lower stretches of the Uruguay River

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