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

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dc.creatorThomaz, Sidinei Magela
dc.creatorBini, Luis Mauricio
dc.creatorSouza, Maria Conceição de
dc.creatorKita, Kazue Kawakita
dc.creatorCamargo, Antonio Fernando Monteiro
dc.date.accessioned2017-05-04T12:16:35Z
dc.date.available2017-05-04T12:16:35Z
dc.date.issued1999-01
dc.description.resumoIn 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.pt_BR
dc.identifier.citationTHOMAZ, Sidinei Magela; BINI, Luis Mauricio; SOUZA, Maria Conceição de; KITA, Kazue Kawakita ; CAMARGO, Antonio Fernando Monteiro. Aquatic macrophytes of Itaipu Reservoir, Brazil: survey of species and ecological considerations. Arquivos de Biologia e Tecnologia, Curitiba, v. 42, n. 1, p. 15-22, Jan. 1999.pt_BR
dc.identifier.doi10.1590/S1516-89131999000100003
dc.identifier.issne- 1678-4324
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/11846
dc.language.isoengpt_BR
dc.publisherInstituto de Tecnologia do Paraná - Tecparpt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectNuisance speciespt_BR
dc.subjectAquatic macrophytespt_BR
dc.subjectItaipu reservoirpt_BR
dc.subjectEgeria najaspt_BR
dc.subjectEgeria densapt_BR
dc.titleAquatic macrophytes of Itaipu Reservoir, Brazil: survey of species and ecological considerationspt_BR
dc.typeArtigopt_BR

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