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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2002
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697491_v120_n2_p207_OFarrell http://hdl.handle.net/20.500.12110/paper_02697491_v120_n2_p207_OFarrell |
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paper:paper_02697491_v120_n2_p207_OFarrell2023-06-08T15:24:24Z The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays Algal bioassays Lowland river Phytoplankton South America Water quality Bioassay Chlorophyll Hydrology River pollution Toxic materials Phytoplanktons Water quality chlorophyll heavy metal alga bioassay phytoplankton pollution monitoring river pollution water quality Argentina article bioassay nutrient phytoplankton river water pollution water quality Algae Argentina Biological Assay Environmental Monitoring Fresh Water Phytoplankton Water Movements Water Pollution Argentina algae Selenastrum Selenastrum capricornutum 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. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697491_v120_n2_p207_OFarrell http://hdl.handle.net/20.500.12110/paper_02697491_v120_n2_p207_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 |
Algal bioassays Lowland river Phytoplankton South America Water quality Bioassay Chlorophyll Hydrology River pollution Toxic materials Phytoplanktons Water quality chlorophyll heavy metal alga bioassay phytoplankton pollution monitoring river pollution water quality Argentina article bioassay nutrient phytoplankton river water pollution water quality Algae Argentina Biological Assay Environmental Monitoring Fresh Water Phytoplankton Water Movements Water Pollution Argentina algae Selenastrum Selenastrum capricornutum |
| spellingShingle |
Algal bioassays Lowland river Phytoplankton South America Water quality Bioassay Chlorophyll Hydrology River pollution Toxic materials Phytoplanktons Water quality chlorophyll heavy metal alga bioassay phytoplankton pollution monitoring river pollution water quality Argentina article bioassay nutrient phytoplankton river water pollution water quality Algae Argentina Biological Assay Environmental Monitoring Fresh Water Phytoplankton Water Movements Water Pollution Argentina algae Selenastrum Selenastrum capricornutum The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| topic_facet |
Algal bioassays Lowland river Phytoplankton South America Water quality Bioassay Chlorophyll Hydrology River pollution Toxic materials Phytoplanktons Water quality chlorophyll heavy metal alga bioassay phytoplankton pollution monitoring river pollution water quality Argentina article bioassay nutrient phytoplankton river water pollution water quality Algae Argentina Biological Assay Environmental Monitoring Fresh Water Phytoplankton Water Movements Water Pollution Argentina algae Selenastrum Selenastrum capricornutum |
| description |
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. |
| title |
The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| title_short |
The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| title_full |
The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| title_fullStr |
The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| title_full_unstemmed |
The assessment of water quality in the Lower Luján River (Buenos Aires, Argentina): Phytoplankton and algal bioassays |
| title_sort |
assessment of water quality in the lower luján river (buenos aires, argentina): phytoplankton and algal bioassays |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697491_v120_n2_p207_OFarrell http://hdl.handle.net/20.500.12110/paper_02697491_v120_n2_p207_OFarrell |
| _version_ |
1768544178847875072 |