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      Hyperdominance in the Amazonian tree flora.

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      Science (New York, N.Y.)

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          Abstract

          The vast extent of the Amazon Basin has historically restricted the study of its tree communities to the local and regional scales. Here, we provide empirical data on the commonness, rarity, and richness of lowland tree species across the entire Amazon Basin and Guiana Shield (Amazonia), collected in 1170 tree plots in all major forest types. Extrapolations suggest that Amazonia harbors roughly 16,000 tree species, of which just 227 (1.4%) account for half of all trees. Most of these are habitat specialists and only dominant in one or two regions of the basin. We discuss some implications of the finding that a small group of species--less diverse than the North American tree flora--accounts for half of the world's most diverse tree community.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          1095-9203
          0036-8075
          Oct 18 2013
          : 342
          : 6156
          Affiliations
          [1 ] Naturalis Biodiversity Center, Leiden, Netherlands.
          Article
          342/6156/1243092
          10.1126/science.1243092
          24136971
          228ac1e5-b02b-48e2-93bb-45f54d5e7c67

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