Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations

Detalhes bibliográficos
Autor(a) principal: Thomaz, Sidinei Magela
Data de Publicação: 1999
Outros Autores: Bini, Luis Maurício, Souza, Maria Conceição de, Kita, Kazue Kawakita, Camargo, Antonio Fernando Monteiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100003
http://hdl.handle.net/11449/65977
Resumo: In a survey of the aquatic macrophytes of the Itaipu Reservoir, we identified 62 taxa in 25 families and 42 genera. The highest number taxa was observed for the emergent macrophytes (40 taxa). Reduced fluctuation in water level, increased light penetration, and sediment enrichment by nutrients and organic matter following the formation of the reservoir favored the appearance of a species-rich community of submerged macrophytes (23% of the taxa identified). The aquatic macrophytes were found mainly near the mouths of the main tributaries of the reservoir, in shallow area of depth less than 2 meters. In addition to the shallow depth, the greater nutrient input from the tributaries and relative protection from wind explained this distribution. Among the species found, Egeria najas merits mention for its occurrence in all localities sampled, with biomass values varying between 98 and 186 gDW/m2. Some potential nuisance species such as Eichhornia crassipes, Salvinia auriculata, and Pistia stratiotes also deserve attention, since they were also observed to be covering large areas of Itaipu Reservoir. © 1999, Paraná Institute of Technology Publication.
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spelling Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerationsAquatic macrophytesEgeria densaEgeria najasItaipu reservoirNuisance speciesIn a survey of the aquatic macrophytes of the Itaipu Reservoir, we identified 62 taxa in 25 families and 42 genera. The highest number taxa was observed for the emergent macrophytes (40 taxa). Reduced fluctuation in water level, increased light penetration, and sediment enrichment by nutrients and organic matter following the formation of the reservoir favored the appearance of a species-rich community of submerged macrophytes (23% of the taxa identified). The aquatic macrophytes were found mainly near the mouths of the main tributaries of the reservoir, in shallow area of depth less than 2 meters. In addition to the shallow depth, the greater nutrient input from the tributaries and relative protection from wind explained this distribution. Among the species found, Egeria najas merits mention for its occurrence in all localities sampled, with biomass values varying between 98 and 186 gDW/m2. Some potential nuisance species such as Eichhornia crassipes, Salvinia auriculata, and Pistia stratiotes also deserve attention, since they were also observed to be covering large areas of Itaipu Reservoir. © 1999, Paraná Institute of Technology Publication.Universidade Estadual de Maringá Departamento de Biologia-Nupélia, Maringá, PR, 87020-900Universidade Federal de Goiás ICB DBG, CP 131, Goiânia, GO, 74001-970Universdiade Estadual Paulista Departamento de Ecologia, Av. 24A, 1515, Rio Claro, SP, 13506-900Universidade Estadual de Maringá (UEM)Universidade Federal de Goiás (UFG)Universidade Estadual Paulista (Unesp)Thomaz, Sidinei MagelaBini, Luis MaurícioSouza, Maria Conceição deKita, Kazue KawakitaCamargo, Antonio Fernando Monteiro2014-05-27T11:19:50Z2014-05-27T11:19:50Z1999-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15-22application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100003Brazilian Archives of Biology and Technology, v. 42, n. 1, p. 15-22, 1999.1516-89130365-0979http://hdl.handle.net/11449/6597710.1590/S1516-89131999000100003S1516-89131999000100003WOS:0000842886000032-s2.0-00097886862-s2.0-0009788686.pdf0000-0003-3565-6838Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Archives of Biology and Technology0.6760,281info:eu-repo/semantics/openAccess2024-01-22T06:21:01Zoai:repositorio.unesp.br:11449/65977Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:38:13.802179Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
title Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
spellingShingle Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
Thomaz, Sidinei Magela
Aquatic macrophytes
Egeria densa
Egeria najas
Itaipu reservoir
Nuisance species
title_short Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
title_full Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
title_fullStr Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
title_full_unstemmed Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
title_sort Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
author Thomaz, Sidinei Magela
author_facet Thomaz, Sidinei Magela
Bini, Luis Maurício
Souza, Maria Conceição de
Kita, Kazue Kawakita
Camargo, Antonio Fernando Monteiro
author_role author
author2 Bini, Luis Maurício
Souza, Maria Conceição de
Kita, Kazue Kawakita
Camargo, Antonio Fernando Monteiro
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Maringá (UEM)
Universidade Federal de Goiás (UFG)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Thomaz, Sidinei Magela
Bini, Luis Maurício
Souza, Maria Conceição de
Kita, Kazue Kawakita
Camargo, Antonio Fernando Monteiro
dc.subject.por.fl_str_mv Aquatic macrophytes
Egeria densa
Egeria najas
Itaipu reservoir
Nuisance species
topic Aquatic macrophytes
Egeria densa
Egeria najas
Itaipu reservoir
Nuisance species
description In a survey of the aquatic macrophytes of the Itaipu Reservoir, we identified 62 taxa in 25 families and 42 genera. The highest number taxa was observed for the emergent macrophytes (40 taxa). Reduced fluctuation in water level, increased light penetration, and sediment enrichment by nutrients and organic matter following the formation of the reservoir favored the appearance of a species-rich community of submerged macrophytes (23% of the taxa identified). The aquatic macrophytes were found mainly near the mouths of the main tributaries of the reservoir, in shallow area of depth less than 2 meters. In addition to the shallow depth, the greater nutrient input from the tributaries and relative protection from wind explained this distribution. Among the species found, Egeria najas merits mention for its occurrence in all localities sampled, with biomass values varying between 98 and 186 gDW/m2. Some potential nuisance species such as Eichhornia crassipes, Salvinia auriculata, and Pistia stratiotes also deserve attention, since they were also observed to be covering large areas of Itaipu Reservoir. © 1999, Paraná Institute of Technology Publication.
publishDate 1999
dc.date.none.fl_str_mv 1999-12-01
2014-05-27T11:19:50Z
2014-05-27T11:19:50Z
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 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100003
Brazilian Archives of Biology and Technology, v. 42, n. 1, p. 15-22, 1999.
1516-8913
0365-0979
http://hdl.handle.net/11449/65977
10.1590/S1516-89131999000100003
S1516-89131999000100003
WOS:000084288600003
2-s2.0-0009788686
2-s2.0-0009788686.pdf
0000-0003-3565-6838
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100003
http://hdl.handle.net/11449/65977
identifier_str_mv Brazilian Archives of Biology and Technology, v. 42, n. 1, p. 15-22, 1999.
1516-8913
0365-0979
10.1590/S1516-89131999000100003
S1516-89131999000100003
WOS:000084288600003
2-s2.0-0009788686
2-s2.0-0009788686.pdf
0000-0003-3565-6838
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Archives of Biology and Technology
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dc.format.none.fl_str_mv 15-22
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dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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