03167nam 2200589Ia 450 991043778520332120200520144314.094-007-6055-810.1007/978-94-007-6055-4(CKB)2670000000356490(EBL)1083712(OCoLC)841367689(SSID)ssj0000880185(PQKBManifestationID)11456396(PQKBTitleCode)TC0000880185(PQKBWorkID)10894998(PQKB)11148963(DE-He213)978-94-007-6055-4(MiAaPQ)EBC1083712(PPN)169142159(EXLCZ)99267000000035649020130130d2013 uy 0engur|n|---|||||txtccrBiogeography of the quaternary molluscs of the southwestern Atlantic Ocean /Sergio Martinez, Claudia J. del Rio, Alejandra Rojas1st ed. 2013.New York Springer20131 online resource (40 p.)SpringerBriefs in Earth System Sciences,2191-589XDescription based upon print version of record.94-007-6054-X Introduction -- Present oceanographic conditions -- Present biogeographical units -- Neogene roots -- Quaternary mollusks -- -Outline and Methods -- -Previous studies -- -Species distribution -- Faunal boundaries during the Quaternary -- Final remarks.The Quaternary comprises a brief time in the Earth’s history, and apart from a few exceptions, molluscan assemblages recovered from exposures along the coast of Southwestern South America (Southern Brazil, Uruguay, Argentina) are essentially the same than those that inhabit the region today, leading to the assumption that no important change in the distribution of the faunas since Pleistocene times has occurred. However, the good taxonomic and temporal resolution reached in the last years, allowed us to detect some biogeographic changes, although traditional biogeographic units remain the same (i.e. Magellanic and Argentinean Provinces). These modifications involve mainly variations in the taxonomic composition of the assemblages and in the southern boundaries of some species distributions (extralimital species), today retracted northwards. These changes are related to southward shifts of the warm waters of the Brazilian Current, correlated with global warm peaks. This phenomenon was more intense in the Late Pleistocene (MIS 5e) and in the Holocene between ca. 6500-3500 14C yr.SpringerBriefs in Earth System Sciences,2191-589XMollusksAtlantic OceanBiogeographyMollusksBiogeography.564Martinez Sergio1958-1757773Rio Claudia J. del1757774Rojas Alejandra1958-1757775MiAaPQMiAaPQMiAaPQBOOK9910437785203321Biogeography of the quaternary molluscs of the southwestern Atlantic Ocean4195741UNINA