Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Limnologica Brasiliensia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2017000100413 |
Resumo: | Abstract Aim: To evaluate the influence of upstream reservoirs on the temporal and spatial variation of the phytoplankton community in the Paraná River channel and the importance of its main tributaries in reducing the oligotrophication process along this stretch of the river. Materials and Methods Sampling of phytoplankton and physical and chemical variables was performed quarterly between August 2013 and May 2015, in the Paraná River main channel and in the mouth of the main tributaries, at the stretch located between downstream Porto Primavera reservoir and the backwaters of Itaipu reservoir. To summarize the variation of phytoplankton density in relation to the main physical and chemical variables, we performed a Redundancy Analysis (RDA). Results A total of 214 taxa were identified throughout the study. We registered low values of phytoplankton species richness and abundance, which showed no patterns of temporal and spatial distribution, both for the Paraná River and the tributaries. However, RDA results showed spatial segregation among samples from the Paraná River main channel, such that the stretch located closer to the dam was associated with higher values of water transparency and Cyanobacteria density, exported by upstream reservoirs, whereas the middle and lower stretches were associated with higher phytoplankton complexity and higher nutrient concentration and turbidity. Conclusion Through the analysis of the phytoplankton community we could verify a reduction in the effects of oligotrophication along the longitudinal axis of the Paraná River and the important role of the tributaries in diminishing this effect. |
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Acta Limnologica Brasiliensia (Online) |
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Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the damplanktonic algaelotic systemoligotrophicationPorto Primavera reservoirserial discontinuity Abstract Aim: To evaluate the influence of upstream reservoirs on the temporal and spatial variation of the phytoplankton community in the Paraná River channel and the importance of its main tributaries in reducing the oligotrophication process along this stretch of the river. Materials and Methods Sampling of phytoplankton and physical and chemical variables was performed quarterly between August 2013 and May 2015, in the Paraná River main channel and in the mouth of the main tributaries, at the stretch located between downstream Porto Primavera reservoir and the backwaters of Itaipu reservoir. To summarize the variation of phytoplankton density in relation to the main physical and chemical variables, we performed a Redundancy Analysis (RDA). Results A total of 214 taxa were identified throughout the study. We registered low values of phytoplankton species richness and abundance, which showed no patterns of temporal and spatial distribution, both for the Paraná River and the tributaries. However, RDA results showed spatial segregation among samples from the Paraná River main channel, such that the stretch located closer to the dam was associated with higher values of water transparency and Cyanobacteria density, exported by upstream reservoirs, whereas the middle and lower stretches were associated with higher phytoplankton complexity and higher nutrient concentration and turbidity. Conclusion Through the analysis of the phytoplankton community we could verify a reduction in the effects of oligotrophication along the longitudinal axis of the Paraná River and the important role of the tributaries in diminishing this effect.Associação Brasileira de Limnologia2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2017000100413Acta Limnologica Brasiliensia v.29 2017reponame:Acta Limnologica Brasiliensia (Online)instname:Associação Brasileira de Limnologia (ABL)instacron:ABL10.1590/s2179-975x4017info:eu-repo/semantics/openAccessJati,SusicleyBortolini,Jascieli CarlaMoresco,Geovani ArnholdPaula,Aline Caroline Magro deRodrigues,Luzia CleideIatskiu,PatriciaPineda,AlfonsoZanco,Bárbara FurigoSilva,Matheus Vieira daSouza,Yasmin Rodrigueseng2017-12-15T00:00:00Zoai:scielo:S2179-975X2017000100413Revistahttp://www.ablimno.org.br/publiActa.phphttps://old.scielo.br/oai/scielo-oai.php||actalb@rc.unesp.br2179-975X0102-6712opendoar:2017-12-15T00:00Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL)false |
dc.title.none.fl_str_mv |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
title |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
spellingShingle |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam Jati,Susicley planktonic algae lotic system oligotrophication Porto Primavera reservoir serial discontinuity |
title_short |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
title_full |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
title_fullStr |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
title_full_unstemmed |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
title_sort |
Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam |
author |
Jati,Susicley |
author_facet |
Jati,Susicley Bortolini,Jascieli Carla Moresco,Geovani Arnhold Paula,Aline Caroline Magro de Rodrigues,Luzia Cleide Iatskiu,Patricia Pineda,Alfonso Zanco,Bárbara Furigo Silva,Matheus Vieira da Souza,Yasmin Rodrigues |
author_role |
author |
author2 |
Bortolini,Jascieli Carla Moresco,Geovani Arnhold Paula,Aline Caroline Magro de Rodrigues,Luzia Cleide Iatskiu,Patricia Pineda,Alfonso Zanco,Bárbara Furigo Silva,Matheus Vieira da Souza,Yasmin Rodrigues |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Jati,Susicley Bortolini,Jascieli Carla Moresco,Geovani Arnhold Paula,Aline Caroline Magro de Rodrigues,Luzia Cleide Iatskiu,Patricia Pineda,Alfonso Zanco,Bárbara Furigo Silva,Matheus Vieira da Souza,Yasmin Rodrigues |
dc.subject.por.fl_str_mv |
planktonic algae lotic system oligotrophication Porto Primavera reservoir serial discontinuity |
topic |
planktonic algae lotic system oligotrophication Porto Primavera reservoir serial discontinuity |
description |
Abstract Aim: To evaluate the influence of upstream reservoirs on the temporal and spatial variation of the phytoplankton community in the Paraná River channel and the importance of its main tributaries in reducing the oligotrophication process along this stretch of the river. Materials and Methods Sampling of phytoplankton and physical and chemical variables was performed quarterly between August 2013 and May 2015, in the Paraná River main channel and in the mouth of the main tributaries, at the stretch located between downstream Porto Primavera reservoir and the backwaters of Itaipu reservoir. To summarize the variation of phytoplankton density in relation to the main physical and chemical variables, we performed a Redundancy Analysis (RDA). Results A total of 214 taxa were identified throughout the study. We registered low values of phytoplankton species richness and abundance, which showed no patterns of temporal and spatial distribution, both for the Paraná River and the tributaries. However, RDA results showed spatial segregation among samples from the Paraná River main channel, such that the stretch located closer to the dam was associated with higher values of water transparency and Cyanobacteria density, exported by upstream reservoirs, whereas the middle and lower stretches were associated with higher phytoplankton complexity and higher nutrient concentration and turbidity. Conclusion Through the analysis of the phytoplankton community we could verify a reduction in the effects of oligotrophication along the longitudinal axis of the Paraná River and the important role of the tributaries in diminishing this effect. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2017000100413 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2017000100413 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s2179-975x4017 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
dc.source.none.fl_str_mv |
Acta Limnologica Brasiliensia v.29 2017 reponame:Acta Limnologica Brasiliensia (Online) instname:Associação Brasileira de Limnologia (ABL) instacron:ABL |
instname_str |
Associação Brasileira de Limnologia (ABL) |
instacron_str |
ABL |
institution |
ABL |
reponame_str |
Acta Limnologica Brasiliensia (Online) |
collection |
Acta Limnologica Brasiliensia (Online) |
repository.name.fl_str_mv |
Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL) |
repository.mail.fl_str_mv |
||actalb@rc.unesp.br |
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1754212637236789248 |