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Growth of free-floating aquatic macrophytes in different concentrations of nutrients

dc.contributor.authorHenry-Silva, Gustavo G.
dc.contributor.authorCamargo, Antonio Fernando Monteiro [UNESP]
dc.contributor.authorPezzato, Maura M.
dc.contributor.institutionUniversidade Federal Rural do Semi-Árido (UFERSA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2013-09-30T18:48:29Z
dc.date.accessioned2014-05-20T13:57:42Z
dc.date.available2013-09-30T18:48:29Z
dc.date.available2014-05-20T13:57:42Z
dc.date.issued2008-09-01
dc.description.abstractThe objective of the study was to evaluate the effect of different concentrations of nitrogen and phosphorus on the growth of the free-floating aquatic macrophytes Eichhornia crassipes, Pistia stratiotes, and Salvinia molesta. The plants were cultured in 2,000-l outdoor concrete tanks. Triplicate tanks, with a continuous flow of effluent from culture ponds containing Nile tilapia, were used for each plant type (n = 3). The plant material was collected monthly from 0.25 m(2) floating quadrats, at the two ends of the tanks (higher nutrient concentrations near the inflow and lower nutrient concentrations near the outflow). In low nutrient concentrations, the maximum relative growth rates (RGRs) for E. crassipes (0.016/day) and P. stratiotes (0.016/day) were significantly lower (P <= 0.05) than for S. molesta (0.029/day). There were no significant differences between the RGRs of S. molesta in the different nutrient concentrations. Eichhornia crassipes and P. stratiotes had their growth limited by nitrogen and phosphorus concentrations. The increase in plant density during the experiment probably also affected the growth of these species. In this context, E. crassipes and P. stratiotes can cause problems in nutrient-rich waterbodies, but under these experimental conditions their growth was limited by nitrogen and/or phosphorus concentrations. The growth of S. molesta was not influenced by the different nutrient concentrations.en
dc.description.affiliationUniversidade Federal Rural do Semi-Árido (UFERSA), Dept Ciencias Anim, BR-59625900 Mossoro, RN, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Hidrobiol, BR-1365905 São Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent153-160
dc.identifierhttp://dx.doi.org/10.1007/s10750-008-9430-0
dc.identifier.citationHydrobiologia. Dordrecht: Springer, v. 610, p. 153-160, 2008.
dc.identifier.doi10.1007/s10750-008-9430-0
dc.identifier.issn0018-8158
dc.identifier.orcid0000-0003-3565-6838
dc.identifier.urihttp://hdl.handle.net/11449/20565
dc.identifier.wosWOS:000257392300014
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofHydrobiologia
dc.relation.ispartofjcr2.165
dc.relation.ispartofsjr0,896
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEichhornia crassipesen
dc.subjectPistia stratiotesen
dc.subjectSalvinia molestaen
dc.subjectrelative growth rateen
dc.subjectnitrogenen
dc.subjectphosphorusen
dc.titleGrowth of free-floating aquatic macrophytes in different concentrations of nutrientsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
dspace.entity.typePublication
unesp.author.lattes9032220109730468[2]
unesp.author.orcid0000-0003-3565-6838[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Rio Claropt
unesp.departmentEcologia - IBpt

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