Registro do gradiente latitudinal, de descargas de rios e de massas de água ao longo da costa subtropical da América do Sul, utilizando-se associações de foraminíferos bentônicos

dc.creatorEichler, Patrícia Pinheiro Beck
dc.creatorRodrigues, André Rosch
dc.creatorEichler, Beatriz Beck
dc.creatorSaraiva, Elisabete de Santis Braga da Graca
dc.creatorCampos, Edmo Jose Dias
dc.date.accessioned2013-11-04T12:52:31Z
dc.date.accessioned2018-07-04T16:38:20Z
dc.date.available2013-11-04T12:52:31Z
dc.date.available2018-07-04T16:38:20Z
dc.date.created2013-11-04T12:52:31Z
dc.date.issued2012
dc.identifierBRAZILIAN JOURNAL OF BIOLOGY, v. 72, n. 3, p. 723-759, 2012
dc.identifier1519-6984
dc.identifierhttp://www.producao.usp.br/handle/BDPI/40083
dc.identifier10.1590/S1519-69842012000400010
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400010&lng=en&nrm=iso&tlng=en
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_abstract&pid=S1519-69842012000400010&lng=en&nrm=iso&tlng=en
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_pdf&pid=S1519-69842012000400010&lng=en&nrm=iso&tlng=en
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1638321
dc.description.abstractMore than 30% of Buccella peruviana (D'Orbigny), Globocassidulina crassa porrecta (Earland & Heron-Allen), Cibicides mackannai (Galloway & Wissler) and C. refulgens (Montfort) indicate the presence of cold Sub Antarctic Shelf Water in winter, from 33.5 to 38.3º S, deeper than 100 m, in the southern part of the study area. In summer, the abundance of this association decreases to less than 15% around 37.5-38.9º S where two species (Globocassidulina subglobosa (Brady), Uvigerina peregrina (Cushman) take over. G. subglobosa, U. peregrina, and Hanzawaia boueana (D'Orbigny) are found at 27-33º S in both seasons in less than 55 m deep in the northern part, and are linked with warm Subtropical Shelf Water and Tropical Water. Freshwater influence was signalized by high silicate concentration and by the presence of Pseudononion atlanticum (Cushman), Bolivina striatula (Cushman), Buliminella elegantissima (D'Orbigny), Bulimina elongata (D'Orbigny), Elphidium excavatum (Terquem), E. poeyanum (D'Orbigny), Ammobaculites exiguus (Cushman & Brönnimann), Arenoparrella mexicana (Kornfeld), Gaudryina exillis (Cushman & Brönnimann), Textularia earlandi (Parker) and thecamoebians in four sectors of the shelf. The presence of Bulimina marginata (D'Orbigny) between 34.1-32.8º S in the winter and 34.2-32.7º S in the summer indicates that the influence of the Subtropical Shelf Front on the sediment does not change seasonally, otherwise, the presence of Angulogerina angulosa (Williamson) in the winter, only in Mar del Plata (38.9º S), show that Malvinas currents are not influencing the sediment in the summer.
dc.languageeng
dc.publisherInstituto Internacional de Ecologia
dc.relationBrazilian Journal of Biology
dc.rightsopenAccess
dc.subjectforaminifera diversity
dc.subjectsubantarctic and subtropical shelf water
dc.subjectsubtropical shelf front
dc.subjectfreshwater influence
dc.subjectdiversidade de foraminíferos
dc.subjectágua de plataforma subantártica e subtropical
dc.subjectfrente subtropical de plataforma
dc.subjectinfluência de água doce
dc.titleTracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages
dc.titleRegistro do gradiente latitudinal, de descargas de rios e de massas de água ao longo da costa subtropical da América do Sul, utilizando-se associações de foraminíferos bentônicos
dc.typeArtículos de revistas


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