The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays

The monitoring of river phytoplankton and several hydrological, physical and chemical variables, in combination with bioassays using Selenastrum capricornutum Printz, allowed the characterisation of three distinct reaches of the Lower River Luján. The upstream stretch, characterised by the lowest de...

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Autor principal: O'Farrell, Inés
Otros Autores: Lombardo, R.J, De Tezanos Pinto, P., Loez, C.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2002
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100 1 |a O'Farrell, Inés 
245 1 4 |a The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays 
260 |c 2002 
270 1 0 |m O'Farrell, I.; Dpto. Biología, Facultad de Cie. Exactas y Naturales, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina; email: ines@bg.fcen.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a The monitoring of river phytoplankton and several hydrological, physical and chemical variables, in combination with bioassays using Selenastrum capricornutum Printz, allowed the characterisation of three distinct reaches of the Lower River Luján. The upstream stretch, characterised by the lowest depth and discharge, registered the highest nutrient, dissolved heavy metal and chlorophyll a concentrations in accordance with low phytoplankton diversity and the occurrence of several species typical of organically polluted lowland rivers. A downstream improvement, concomitant to increasing river discharge, is revealed by a progressive decrease of organic pollution parameters even though algal toxicity is registered through bioassays. The water input from the Paraná River through the G. Arias Channel plays an important role in the regulation of the limnology of the Lower Luján River. As a result of marked increasing discharge, depth and width, there is a decrease in nutrient concentration and phytoplankton density and an increase in dissolved oxygen concentration. Likewise, algal growth rates in the bioassays showed less toxic effect. © 2002 Elsevier Science Ltd. All rights reserved.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: This work was financially supported by the University of Buenos Aires, CONICET and ANPCYT. We are especially thankful to Dr. Marı́a dos Santos Afonso for the chemical analysis. We are grateful to Prefectura Naval Argentina for making available a ship for this research work and for the field assistance. 
593 |a Dpto. Biología, Facultad de Cie. Exactas y Naturales, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina 
651 4 |a SOUTH AMERICA 
651 4 |a ARGENTINA 
651 4 |a ARGENTINA 
651 4 |a ARGENTINA 
690 1 0 |a ALGAL BIOASSAYS 
690 1 0 |a LOWLAND RIVER 
690 1 0 |a PHYTOPLANKTON 
690 1 0 |a WATER QUALITY 
690 1 0 |a BIOASSAY 
690 1 0 |a CHLOROPHYLL 
690 1 0 |a HYDROLOGY 
690 1 0 |a RIVER POLLUTION 
690 1 0 |a TOXIC MATERIALS 
690 1 0 |a PHYTOPLANKTONS 
690 1 0 |a WATER QUALITY 
690 1 0 |a CHLOROPHYLL 
690 1 0 |a HEAVY METAL 
690 1 0 |a ALGA 
690 1 0 |a BIOASSAY 
690 1 0 |a PHYTOPLANKTON 
690 1 0 |a POLLUTION MONITORING 
690 1 0 |a RIVER POLLUTION 
690 1 0 |a WATER QUALITY 
690 1 0 |a ARTICLE 
690 1 0 |a BIOASSAY 
690 1 0 |a NUTRIENT 
690 1 0 |a PHYTOPLANKTON 
690 1 0 |a RIVER 
690 1 0 |a WATER POLLUTION 
690 1 0 |a WATER QUALITY 
690 1 0 |a ALGAE 
690 1 0 |a BIOLOGICAL ASSAY 
690 1 0 |a ENVIRONMENTAL MONITORING 
690 1 0 |a FRESH WATER 
690 1 0 |a PHYTOPLANKTON 
690 1 0 |a WATER MOVEMENTS 
690 1 0 |a WATER POLLUTION 
690 1 0 |a ALGAE 
690 1 0 |a SELENASTRUM 
690 1 0 |a SELENASTRUM CAPRICORNUTUM 
700 1 |a Lombardo, R.J. 
700 1 |a De Tezanos Pinto, P. 
700 1 |a Loez, C. 
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