Patos Lagoon: indicators of organic pollution
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/2140 |
Resumo: | Patos Lagoon is the largest receptor of fluvial waters used for agricultural, navigational and fishing activities in the state of Rio Grande do Sul. The dumping of industrial and domestic effluents into those waters is its worst polluting source. Aiming at assessing organic contamination, 16 points were sampled along the lagoon (winter and summer). Ammonium and BOD rates (chemoindicators of organic contamination) increased in summer in waters to the south of the lagoon adjacent to the cities of Rio Grande and São Lourenço and, more to the north, near Camaquã river. In the winter, the waters near the cities of São Lourenço and Tapes (located to the north of the lagoon) also presented increases in those parameters rates. Fecal coliform bacteria rates presented a similar pattern to that of chemical parameters, increasing in waters near the cities of Rio Grande and Pelotas (São Gonçalo Canal and Laranjal beach), both situated to the south of the lagoon. No contamination was verified in channel areas along the lagoon's axis, due to stronger hydrodynamics and the distance from urban contamination sources.An intrusion of saline water into the estuarine water at the south of the lagoon occurred in the winter. A marked stratification was defined in the water column, with oxygen subsaturation in bottom waters, due to resuspension of deposited sediment and release of semianoxic interstitial water. Although Patos lagoon is a national heritage of touristic, ecologic and economic importance, it has been degraded by effluents, urging their treatment and hydro-sanitary monitoring. |
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Patos Lagoon: indicators of organic pollutionDomestic effluentsColiformsBODPatos LagoonPatos Lagoon is the largest receptor of fluvial waters used for agricultural, navigational and fishing activities in the state of Rio Grande do Sul. The dumping of industrial and domestic effluents into those waters is its worst polluting source. Aiming at assessing organic contamination, 16 points were sampled along the lagoon (winter and summer). Ammonium and BOD rates (chemoindicators of organic contamination) increased in summer in waters to the south of the lagoon adjacent to the cities of Rio Grande and São Lourenço and, more to the north, near Camaquã river. In the winter, the waters near the cities of São Lourenço and Tapes (located to the north of the lagoon) also presented increases in those parameters rates. Fecal coliform bacteria rates presented a similar pattern to that of chemical parameters, increasing in waters near the cities of Rio Grande and Pelotas (São Gonçalo Canal and Laranjal beach), both situated to the south of the lagoon. No contamination was verified in channel areas along the lagoon's axis, due to stronger hydrodynamics and the distance from urban contamination sources.An intrusion of saline water into the estuarine water at the south of the lagoon occurred in the winter. A marked stratification was defined in the water column, with oxygen subsaturation in bottom waters, due to resuspension of deposited sediment and release of semianoxic interstitial water. Although Patos lagoon is a national heritage of touristic, ecologic and economic importance, it has been degraded by effluents, urging their treatment and hydro-sanitary monitoring.2012-07-18T19:59:17Z2012-07-18T19:59:17Z2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfNIENCHESKI, Luis Felipe Hax, et al. Patos Lagoon: indicators of organic pollution. Journal of Coastal Research, v. 39, p. 1356-1359, 2006. Disponível em: <http://siaiacad09.univali.br/ics2004/arquivos/284_niencheski.pdf>. Acesso em 09 jul. 2012.0749-0208http://repositorio.furg.br/handle/1/2140engNiencheski, Luis Felipe HaxBaumgarten, Maria da Graça ZepkaCabrera, Liziara da CostaJuliano, Susana Kalilinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2012-07-18T19:59:17Zoai:repositorio.furg.br:1/2140Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2012-07-18T19:59:17Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.none.fl_str_mv |
Patos Lagoon: indicators of organic pollution |
title |
Patos Lagoon: indicators of organic pollution |
spellingShingle |
Patos Lagoon: indicators of organic pollution Niencheski, Luis Felipe Hax Domestic effluents Coliforms BOD Patos Lagoon |
title_short |
Patos Lagoon: indicators of organic pollution |
title_full |
Patos Lagoon: indicators of organic pollution |
title_fullStr |
Patos Lagoon: indicators of organic pollution |
title_full_unstemmed |
Patos Lagoon: indicators of organic pollution |
title_sort |
Patos Lagoon: indicators of organic pollution |
author |
Niencheski, Luis Felipe Hax |
author_facet |
Niencheski, Luis Felipe Hax Baumgarten, Maria da Graça Zepka Cabrera, Liziara da Costa Juliano, Susana Kalil |
author_role |
author |
author2 |
Baumgarten, Maria da Graça Zepka Cabrera, Liziara da Costa Juliano, Susana Kalil |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Niencheski, Luis Felipe Hax Baumgarten, Maria da Graça Zepka Cabrera, Liziara da Costa Juliano, Susana Kalil |
dc.subject.por.fl_str_mv |
Domestic effluents Coliforms BOD Patos Lagoon |
topic |
Domestic effluents Coliforms BOD Patos Lagoon |
description |
Patos Lagoon is the largest receptor of fluvial waters used for agricultural, navigational and fishing activities in the state of Rio Grande do Sul. The dumping of industrial and domestic effluents into those waters is its worst polluting source. Aiming at assessing organic contamination, 16 points were sampled along the lagoon (winter and summer). Ammonium and BOD rates (chemoindicators of organic contamination) increased in summer in waters to the south of the lagoon adjacent to the cities of Rio Grande and São Lourenço and, more to the north, near Camaquã river. In the winter, the waters near the cities of São Lourenço and Tapes (located to the north of the lagoon) also presented increases in those parameters rates. Fecal coliform bacteria rates presented a similar pattern to that of chemical parameters, increasing in waters near the cities of Rio Grande and Pelotas (São Gonçalo Canal and Laranjal beach), both situated to the south of the lagoon. No contamination was verified in channel areas along the lagoon's axis, due to stronger hydrodynamics and the distance from urban contamination sources.An intrusion of saline water into the estuarine water at the south of the lagoon occurred in the winter. A marked stratification was defined in the water column, with oxygen subsaturation in bottom waters, due to resuspension of deposited sediment and release of semianoxic interstitial water. Although Patos lagoon is a national heritage of touristic, ecologic and economic importance, it has been degraded by effluents, urging their treatment and hydro-sanitary monitoring. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 2012-07-18T19:59:17Z 2012-07-18T19:59:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
NIENCHESKI, Luis Felipe Hax, et al. Patos Lagoon: indicators of organic pollution. Journal of Coastal Research, v. 39, p. 1356-1359, 2006. Disponível em: <http://siaiacad09.univali.br/ics2004/arquivos/284_niencheski.pdf>. Acesso em 09 jul. 2012. 0749-0208 http://repositorio.furg.br/handle/1/2140 |
identifier_str_mv |
NIENCHESKI, Luis Felipe Hax, et al. Patos Lagoon: indicators of organic pollution. Journal of Coastal Research, v. 39, p. 1356-1359, 2006. Disponível em: <http://siaiacad09.univali.br/ics2004/arquivos/284_niencheski.pdf>. Acesso em 09 jul. 2012. 0749-0208 |
url |
http://repositorio.furg.br/handle/1/2140 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da FURG (RI FURG) instname:Universidade Federal do Rio Grande (FURG) instacron:FURG |
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Universidade Federal do Rio Grande (FURG) |
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FURG |
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FURG |
reponame_str |
Repositório Institucional da FURG (RI FURG) |
collection |
Repositório Institucional da FURG (RI FURG) |
repository.name.fl_str_mv |
Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG) |
repository.mail.fl_str_mv |
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1807384368716447744 |