You are in the accessibility menu

Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorCasatti, Lilian-
dc.contributor.authorFerreira, Cristiane P.-
dc.contributor.authorLangeani, Francisco-
dc.identifier.citationHydrobiologia. Dordrecht: Springer, v. 623, n. 1, p. 173-189, 2009.-
dc.description.abstractThis study was carried out to develop and apply a fish-based biotic integrity index to assess lowland streams in a highly deforested region of the Upper Parana River basin. Fifty-six first-order segments were randomly selected for environmental and fish evaluation. Because previous analysis had identified the main type of effect on the streams of the region as physical habitat degradation, 22 qualitatively biological attributes were selected and tested over a physical condition gradient between reference and degraded sites. Sensitivity and redundancy of each attribute revealed that five metrics were adequate for discriminating higher quality from degraded sites. of the fifty-six streams assessed, one (2%) was classified as good, four (7%) as fair, ten (18%) as poor, and forty-one (73%) as very poor, indicating that, on a regional scale, many aspects of biological integrity are altered, indicative of serious degradation. Considering that first-order segments amount to 11,000 km in total, it is noticeable that 10,000 km of the stream segments have no more than half of the expected conditions, indicative of poor or very poor biotic integrity conditions. Possible strategies of mitigating this scenario are discussed.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.sourceWeb of Science-
dc.subjectHabitat qualityen
dc.subjectBiological monitoringen
dc.titleA fish-based biotic integrity index for assessment of lowland streams in southeastern Brazilen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Bot & Zool, IBILCE,Lab Ictiol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Bot & Zool, IBILCE,Lab Ictiol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil-
dc.description.sponsorshipIdCNPq: 141028/2007-6-
dc.description.sponsorshipIdFAPESP: 06/01479-4-
dc.rights.accessRightsAcesso restrito-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.