Spatial and temporal heterogeneity in the Jurumirim Reservoir, São Paulo, Brazil

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dc.contributor.authorNogueira, M. G. [UNESP]
dc.contributor.authorHenry, R. [UNESP]
dc.contributor.authorMaricatto, F. E. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:19:45Z
dc.date.available2014-05-27T11:19:45Z
dc.date.issued1999-09-01
dc.description.abstractJurumirim is a large tropical reservoir with remarkable spatial gradients. This structure seems to be determined by a longitudinal gradient in the trophic conditions along the main axis of the reservoir. Nutrient-rich waters enter from the main tributary river, Paranapanema, and towards the dam there is a lacustrine zone that is deeper and more oligotrophic. Additional variability is derived from two important lateral components: the entrance of the Taquari River, the second largest tributary, bringing waters with higher pH and alkalinity; and the Ribeirão das Posses arm, a sheltered bay where the hydrodynamic conditions promote a high growth of phytoplankton. However, such a spatial pattern is not static. It can become either more defined, during the dry season (late autumn and winter), or less evident, during the expansion of the lotic conditions in the rainy period (late spring and summer). Seasonal processes of stratification/destratification determine the temporal changes in the lacustrine zone but, unlike the upstream regions, the dam zone of the reservoir seems to be little affected by periodic pulses of modifications produced by intensive rains. The presence of extensive wetlands and oxbow lagoons in the mouth zones of the main rivers also constitutes an important source of spatial variability and should be considered in the future.en
dc.description.affiliationDepartment of Zoology Institute of Biosciences State University of São Paulo (UNESP), Rubiao Junior, Botucatu, SP
dc.description.affiliationUnespDepartment of Zoology Institute of Biosciences State University of São Paulo (UNESP), Rubiao Junior, Botucatu, SP
dc.format.extent107-120
dc.identifierhttp://dx.doi.org/10.1046/j.1440-1770.1999.00086.x
dc.identifier.citationLakes and Reservoirs: Research and Management, v. 4, n. 3-4, p. 107-120, 1999.
dc.identifier.doi10.1046/j.1440-1770.1999.00086.x
dc.identifier.issn1320-5331
dc.identifier.lattes8695790056366967
dc.identifier.lattes3227572672470260
dc.identifier.orcid0000-0002-4000-2524
dc.identifier.scopus2-s2.0-0033486521
dc.identifier.urihttp://hdl.handle.net/11449/65822
dc.language.isoeng
dc.relation.ispartofLakes and Reservoirs: Research and Management
dc.relation.ispartofsjr0,246
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectLimnological variables
dc.subjectSeasonal pulse effect
dc.subjectSpatial organization
dc.subjectTropical reservoir
dc.subjectlimnology
dc.subjectreservoir
dc.subjectspatial variation
dc.subjectstratification
dc.subjecttemporal variation
dc.subjectheterogeneity
dc.subjectlacustrine environment
dc.subjecttrophic conditions
dc.subjectBrazil
dc.titleSpatial and temporal heterogeneity in the Jurumirim Reservoir, São Paulo, Brazilen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
unesp.author.lattes8695790056366967
unesp.author.lattes3227572672470260[2]
unesp.author.orcid0000-0002-4000-2524[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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