Tributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná River

dc.contributor.authorda Silva, Patricia Sarai
dc.contributor.authorMiranda, Leandro Esteban
dc.contributor.authorMakrakis, Sergio
dc.contributor.authorde Assumpção, Lucileine
dc.contributor.authorDias, João Henrique Pinheiro [UNESP]
dc.contributor.authorMakrakis, Maristela Cavicchioli
dc.contributor.institutionUniversidade Estadual do Oeste do Paraná – Unioeste
dc.contributor.institutionUS Geological Survey
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T16:17:51Z
dc.date.available2019-10-06T16:17:51Z
dc.date.issued2019-02-01
dc.description.abstractConservation of fish assemblages in severely impounded rivers has often focused on providing longitudinal and lateral connectivity along the main stem. Less attention has been given to tributaries, some of which remain unimpounded. This study shows that the biodiversity of ichthyoplankton in tributaries to the largest reservoir in the Paraná River, Brazil, is similar to that of tributaries of the few remaining unimpounded stretches of the Paraná River. Annual and seasonal variability in discharge within and among tributaries attracts and supports a diverse mix of species in each spawning season. Tributaries enrich the fish biodiversity of the entire system by providing a variety of environmental conditions, access to spawning habitat, refugia for early life stages, and by promoting ecological heterogeneity. Thus, tributaries can mitigate the adverse influence of an impounded main stem. Tributaries also support populations of endangered and threatened species. A focus on tributaries offers conservation alternatives that are more feasible given the scale and large number of impoundments constructed on the main stem. Conservation in the main stem may focus on maintaining passage through dams and access to large floodplains. Conversely, in tributaries conservation may focus on managing the quality of inflows from catchments, preserving suitable instream habitats and flows, and preserving access to smaller but more numerous floodplains.en
dc.description.affiliationGrupo de Pesquisa em Tecnologia em Ecohidráulica e Conservação de Recursos Pesqueiros e Hídricos – GETECH Universidade Estadual do Oeste do Paraná – Unioeste
dc.description.affiliationMississippi Cooperative Fish and Wildlife Research Unit US Geological Survey
dc.description.affiliationEngineering College of Ilha Solteira Department of Biology and Zootechny Fish Ecology Laboratory Universidade Estadual Paulista – UNESP
dc.description.affiliationUnespEngineering College of Ilha Solteira Department of Biology and Zootechny Fish Ecology Laboratory Universidade Estadual Paulista – UNESP
dc.format.extent258-269
dc.identifierhttp://dx.doi.org/10.1002/aqc.3037
dc.identifier.citationAquatic Conservation: Marine and Freshwater Ecosystems, v. 29, n. 2, p. 258-269, 2019.
dc.identifier.doi10.1002/aqc.3037
dc.identifier.issn1099-0755
dc.identifier.issn1052-7613
dc.identifier.scopus2-s2.0-85061722793
dc.identifier.urihttp://hdl.handle.net/11449/188743
dc.language.isoeng
dc.relation.ispartofAquatic Conservation: Marine and Freshwater Ecosystems
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectconservation evaluation
dc.subjectfish
dc.subjecthydropower
dc.subjectimpoundment
dc.subjectprotected areas
dc.subjectreservoir
dc.subjectriver
dc.titleTributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná Riveren
dc.typeArtigo
unesp.author.orcid0000-0001-7539-9659[6]

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