Temporal and Spatial Variability of Limnological Characteristics in Areas under the Influence of Tilapia Cages in the Chavantes Reservoir, Paranapanema River, Brazil

Página do item simplificado
dc.contributor.authorMonteiro Rezende Ayroza, Daercy Maria
dc.contributor.authorNogueira, Marcos Gomes [UNESP]
dc.contributor.authorDa Silva Ayroza, Luiz Marques
dc.contributor.authorCarvalho, Edmir Daniel [UNESP]
dc.contributor.authorFerraudo, Antonio Sergio [UNESP]
dc.contributor.authorMonteiro Camargo, Antonio Fernando [UNESP]
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-12-03T13:07:07Z
dc.date.available2014-12-03T13:07:07Z
dc.date.issued2013-12-01
dc.description.abstractThe influence of tilapia cages on limnological characteristics of the Chavantes Reservoir, Paranapanema River, Brazil, was investigated in March and June 2007. Principal components analysis was used to compare the transparency; dissolved oxygen; temperature; total organic nitrogen, phosphorus, and dissolved solids; chlorophyll aand electrical conductivity of fish farm 1 (239.3m.t.), 2 (461.5m.t.) and areas without cages, in the lacustrine and river-reservoir transition regions. The variables differentiated the regions and areas with and without cages. In March, in the lacustrine region, there was a thermal and chemical stratification, and in the transition region, there was a temperature and oxygen reduction gradient between the surface and bottom that was also observed in June in fish farm 1. The higher transparency confirmed the increased light penetration in the lacustrine region. In the transition region, there were higher turbidity, total dissolved solid, and conductivity values that are likely related to allochthonous material flow and transport. In fish farms, lower oxygen and pH values indicate intense decomposition and respiration. The generally higher total dissolved solid and nutrient values, turbidity, and conductivity and the lower transparency in one or both fish farms indicate their contribution to eutrophication, demonstrating the need for careful monitoring.en
dc.description.affiliationAgencia Paulista Tecnol Agronegocios, BR-19802970 Sao Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sao Paulo, Brazil
dc.description.sponsorshipProjects Finance Organization (Financiadora de Estudos e Projetos - FINEP)
dc.description.sponsorshipMinistry of Fisheries and Aquaculture (Ministerio de Pesca e Aquicultura - MPA)
dc.format.extent814-825
dc.identifierhttp://dx.doi.org/10.1111/jwas.12082
dc.identifier.citationJournal Of The World Aquaculture Society. Hoboken: Wiley-blackwell, v. 44, n. 6, p. 814-825, 2013.
dc.identifier.doi10.1111/jwas.12082
dc.identifier.issn0893-8849
dc.identifier.lattes7159757610060958
dc.identifier.lattes8695790056366967
dc.identifier.urihttp://hdl.handle.net/11449/111267
dc.identifier.wosWOS:000327822400006
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of the World Aquaculture Society
dc.relation.ispartofjcr1.338
dc.relation.ispartofsjr0,509
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleTemporal and Spatial Variability of Limnological Characteristics in Areas under the Influence of Tilapia Cages in the Chavantes Reservoir, Paranapanema River, Brazilen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.lattes7159757610060958[5]
unesp.author.lattes8695790056366967
unesp.author.lattes9032220109730468[6]
unesp.author.orcid0000-0003-3565-6838[6]
unesp.author.orcid0000-0002-7089-923X[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

Arquivos

Coleções

Artigos - Zoologia - IBB
Artigos - Ciências Exatas - FCAV
Artigos - Morfologia - IBB