22
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Millennial-scale dynamics of southern Amazonian rain forests.

      Science (New York, N.Y.)
      Bolivia, Climate, Ecosystem, Fossils, Geologic Sediments, Pollen, Rain, Time Factors, Trees

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Amazonian rain forest-savanna boundaries are highly sensitive to climatic change and may also play an important role in rain forest speciation. However, their dynamics over millennial time scales are poorly understood. Here, we present late Quaternary pollen records from the southern margin of Amazonia, which show that the humid evergreen rain forests of eastern Bolivia have been expanding southward over the past 3000 years and that their present-day limit represents the southernmost extent of Amazonian rain forest over at least the past 50,000 years. This rain forest expansion is attributed to increased seasonal latitudinal migration of the Intertropical Convergence Zone, which can in turn be explained by Milankovitch astronomic forcing.

          Related collections

          Author and article information

          Journal
          11125139
          10.1126/science.290.5500.2291

          Chemistry
          Bolivia,Climate,Ecosystem,Fossils,Geologic Sediments,Pollen,Rain,Time Factors,Trees
          Chemistry
          Bolivia, Climate, Ecosystem, Fossils, Geologic Sediments, Pollen, Rain, Time Factors, Trees

          Comments

          Comment on this article