Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)

Detalhes bibliográficos
Autor(a) principal: Jorcin, A.
Data de Publicação: 2005
Outros Autores: Nogueira, M. G.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/19240
Resumo: Total phosphorus concentrations in the sediment of a cascade of 8 reservoirs located in the Paranapanema River (SE, Brazil) were analysed during two consecutive seasonal periods (2000 and 200 1). The reservoirs of Jurumirim, Chavantes, Salto Grande, Canoas 11, Canoas 1, Capivara, Taquarucu and Rosana were built during the last five decades with the purpose of hydroelectric generation. The sampling points were distributed along a 700 km of river stretch in 19 stations distributed in the river-reservoirs zones and main tributaries as well as in 5 stations representing the adjacent wetlands. The nutrient concentration was determined in samples from surface layers of sediment. Temporal and spatial changes were observed for both years. Three different areas could be identified along the river, considering not only Tot-P variations but also others physical and chemical characteristics such as organic matter concentration, nitrogen concentration of sediment and 02, pH, conductivity and Eh measured in the bottom layer of the water column. Higher values of Tot-P were found in the middle and lower region of the Paranapanema basin (maximum value of 1.96 mg g(-1) in Tibagi River in October/2001). Agricultural practices and cattle raising are the main external sources of nutrient in these regions. Superficial or sub-superficial watershed drainage and tributaries entrances are important nutrient contributors, leading to an increasing accumulation of nutrient in the sediment. This process seems to be especially important in the middle region of the Paranapanema Valley, were the values of Tot-P were higher comparing to the other areas.
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spelling Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)phosphatesedimentcascade reservoirsBrazilTotal phosphorus concentrations in the sediment of a cascade of 8 reservoirs located in the Paranapanema River (SE, Brazil) were analysed during two consecutive seasonal periods (2000 and 200 1). The reservoirs of Jurumirim, Chavantes, Salto Grande, Canoas 11, Canoas 1, Capivara, Taquarucu and Rosana were built during the last five decades with the purpose of hydroelectric generation. The sampling points were distributed along a 700 km of river stretch in 19 stations distributed in the river-reservoirs zones and main tributaries as well as in 5 stations representing the adjacent wetlands. The nutrient concentration was determined in samples from surface layers of sediment. Temporal and spatial changes were observed for both years. Three different areas could be identified along the river, considering not only Tot-P variations but also others physical and chemical characteristics such as organic matter concentration, nitrogen concentration of sediment and 02, pH, conductivity and Eh measured in the bottom layer of the water column. Higher values of Tot-P were found in the middle and lower region of the Paranapanema basin (maximum value of 1.96 mg g(-1) in Tibagi River in October/2001). Agricultural practices and cattle raising are the main external sources of nutrient in these regions. Superficial or sub-superficial watershed drainage and tributaries entrances are important nutrient contributors, leading to an increasing accumulation of nutrient in the sediment. This process seems to be especially important in the middle region of the Paranapanema Valley, were the values of Tot-P were higher comparing to the other areas.Univ Estadual Paulista Julio Mesquita Filho, Dept Zool, Inst Biociencias, BR-18618000 Botucatu, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho, Dept Zool, Inst Biociencias, BR-18618000 Botucatu, SP, BrazilBackhuys PublishersUniversidade Estadual Paulista (Unesp)Jorcin, A.Nogueira, M. G.2014-05-20T13:53:51Z2014-05-20T13:53:51Z2005-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject77-86Phosphates In Sediments, Proceedings. Leiden: Backhuys Publishers, p. 77-86, 2005.http://hdl.handle.net/11449/19240WOS:0002317792000088695790056366967Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhosphates In Sediments, Proceedingsinfo:eu-repo/semantics/openAccess2021-10-23T21:41:32Zoai:repositorio.unesp.br:11449/19240Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:40:59.942865Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
title Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
spellingShingle Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
Jorcin, A.
phosphate
sediment
cascade reservoirs
Brazil
title_short Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
title_full Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
title_fullStr Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
title_full_unstemmed Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
title_sort Phosphate distribution in the sediments along a cascade of reservoirs - (Paranapanema River, SE, Brazil)
author Jorcin, A.
author_facet Jorcin, A.
Nogueira, M. G.
author_role author
author2 Nogueira, M. G.
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Jorcin, A.
Nogueira, M. G.
dc.subject.por.fl_str_mv phosphate
sediment
cascade reservoirs
Brazil
topic phosphate
sediment
cascade reservoirs
Brazil
description Total phosphorus concentrations in the sediment of a cascade of 8 reservoirs located in the Paranapanema River (SE, Brazil) were analysed during two consecutive seasonal periods (2000 and 200 1). The reservoirs of Jurumirim, Chavantes, Salto Grande, Canoas 11, Canoas 1, Capivara, Taquarucu and Rosana were built during the last five decades with the purpose of hydroelectric generation. The sampling points were distributed along a 700 km of river stretch in 19 stations distributed in the river-reservoirs zones and main tributaries as well as in 5 stations representing the adjacent wetlands. The nutrient concentration was determined in samples from surface layers of sediment. Temporal and spatial changes were observed for both years. Three different areas could be identified along the river, considering not only Tot-P variations but also others physical and chemical characteristics such as organic matter concentration, nitrogen concentration of sediment and 02, pH, conductivity and Eh measured in the bottom layer of the water column. Higher values of Tot-P were found in the middle and lower region of the Paranapanema basin (maximum value of 1.96 mg g(-1) in Tibagi River in October/2001). Agricultural practices and cattle raising are the main external sources of nutrient in these regions. Superficial or sub-superficial watershed drainage and tributaries entrances are important nutrient contributors, leading to an increasing accumulation of nutrient in the sediment. This process seems to be especially important in the middle region of the Paranapanema Valley, were the values of Tot-P were higher comparing to the other areas.
publishDate 2005
dc.date.none.fl_str_mv 2005-01-01
2014-05-20T13:53:51Z
2014-05-20T13:53:51Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv Phosphates In Sediments, Proceedings. Leiden: Backhuys Publishers, p. 77-86, 2005.
http://hdl.handle.net/11449/19240
WOS:000231779200008
8695790056366967
identifier_str_mv Phosphates In Sediments, Proceedings. Leiden: Backhuys Publishers, p. 77-86, 2005.
WOS:000231779200008
8695790056366967
url http://hdl.handle.net/11449/19240
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Phosphates In Sediments, Proceedings
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 77-86
dc.publisher.none.fl_str_mv Backhuys Publishers
publisher.none.fl_str_mv Backhuys Publishers
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
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instname_str Universidade Estadual Paulista (UNESP)
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institution UNESP
reponame_str Repositório Institucional da UNESP
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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