Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/33469
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dc.creatorLoures, Raquel Coelho-
dc.creatorPompeu, Paulo Santos-
dc.date.accessioned2019-04-09T19:16:19Z-
dc.date.available2019-04-09T19:16:19Z-
dc.date.issued2018-09-18-
dc.identifier.citationLOURES, R. C.; POMPEU, P. S. Long-term study of reservoir cascade in south-eastern Brazil reveals spatio-temporal gradient in fish assemblages. Marine and Freshwater Research, [S.l.], v. 69, n. 12, p. 1983-1994, 2018. DOI: 10.1071/MF18109.pt_BR
dc.identifier.urihttp://www.publish.csiro.au/MF/MF18109pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/33469-
dc.description.abstractIn reservoir cascades, effects on fish assemblages are expected to strengthen over time and transfer from one reservoir to an adjacent one. To test this, fish-assemblage data from 23 years of monitoring in the Araguari reservoir cascade system, upper Paraná River basin, were analysed. The results showed a clear reduction in richness of native and migratory fish species and an increase of non-native species, following reservoir formation. Migratory species richness was higher in reservoirs that presented habitats similar to lotic stretches or tributaries upstream of the impounded area. There was a clear tendency for native species to decline and non-native fish species to increase, in a downstream direction. Fish assemblages became increasingly dissimilar as reservoirs became more distant from each other (longitudinal gradient) and were dominated by small and medium-sized species. Alongside longitudinal position, reservoir area, age and the presence of herbivorous non-native fish were found to be important predictors of variation in fish-assemblage structure. Results from the present study help clarify the potential accumulated impacts of reservoir cascades on fish diversity, which must be carefully considered in river-basin inventories for hydropower plants, and reinforce the importance of long-term monitoring, considering longitudinal and lateral dimensions of the basin.pt_BR
dc.languageen_USpt_BR
dc.publisherCSIRO Publishingpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceMarine and Freshwater Researchpt_BR
dc.subjectAraguari River (Brazil)pt_BR
dc.subjectDam impactpt_BR
dc.subjectFreshwater fishpt_BR
dc.subjectInvasive speciespt_BR
dc.subjectLongitudinal gradientpt_BR
dc.subjectRio Araguari (Brasil)pt_BR
dc.titleLong-term study of reservoir cascade in south-eastern Brazil reveals spatio-temporal gradient in fish assemblagespt_BR
dc.typeArtigopt_BR
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