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      Computational improvements reveal great bacterial diversity and high metal toxicity in soil.

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          Abstract

          The complexity of soil bacterial communities has thus far confounded effective measurement. However, with improved analytical methods, we show that the abundance distribution and total diversity can be deciphered. Reanalysis of reassociation kinetics for bacterial community DNA from pristine and metal-polluted soils showed that a power law best described the abundance distributions. More than one million distinct genomes occurred in the pristine soil, exceeding previous estimates by two orders of magnitude. Metal pollution reduced diversity more than 99.9%, revealing the highly toxic effect of metal contamination, especially for rare taxa.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Aug 26 2005
          : 309
          : 5739
          Affiliations
          [1 ] Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87501, USA.
          Article
          309/5739/1387
          10.1126/science.1112665
          16123304
          e75f84f8-9d10-47d8-a5ab-a1d78e7c3eac
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