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Biogeography of the Quaternary Molluscs of the Southwestern Atlantic Ocean

  • Sergio Martínez
  • Claudia J. del Río
  • Alejandra Rojas

Part of the SpringerBriefs in Earth System Sciences book series (BRIEFSEARTHSYST)

Table of contents

  1. Front Matter
    Pages i-ix
  2. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 1-2
  3. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 3-5
  4. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 7-9
  5. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 11-15
  6. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 17-32
  7. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 33-34
  8. Sergio Martínez, Claudia J. del Río, Alejandra Rojas
    Pages 35-36

About this book

Introduction

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.

Keywords

Argentina Biogeography Extralimital species Holocene Pleistocene Quaternary molluscs Southern Brazil Southwestern Atlantic Uruguay

Authors and affiliations

  • Sergio Martínez
    • 1
  • Claudia J. del Río
    • 2
  • Alejandra Rojas
    • 3
  1. 1., Dpto. de Evolución de CuencasFacultad de CienciasMontevideoUruguay
  2. 2."Bernardino Rivadavia"Museo Argentino de Ciencias NaturalesBuenos AiresArgentina
  3. 3., Dpto. de Evolución de CuencasFacultad de CienciasMontevideoUruguay

Bibliographic information

  • DOI https://doi.org/10.1007/978-94-007-6055-4
  • Copyright Information The Author(s) 2013
  • Publisher Name Springer, Dordrecht
  • eBook Packages Earth and Environmental Science
  • Print ISBN 978-94-007-6054-7
  • Online ISBN 978-94-007-6055-4
  • Series Print ISSN 2191-589X
  • Series Online ISSN 2191-5903
  • Buy this book on publisher's site