Ongoing Modification of Mediterranean Pleistocene Sapropels Mediated by Prokaryotes

  title={Ongoing Modification of Mediterranean Pleistocene Sapropels Mediated by Prokaryotes},
  author={Marco J. L. Coolen and Heribert Cypionka and Andrea M. Sass and Henrik Sass and J{\"o}rg Overmann},
  pages={2407 - 2410}
Late Pleistocene organic-rich sediments (sapropels) from the eastern Mediterranean Sea harbor unknown, metabolically active chemoorganotrophic prokaryotes. As compared to the carbon-lean intermediate layers, sapropels exhibit elevated cell numbers, increased activities of hydrolytic exoenzymes, and increased anaerobic glucose degradation rates, suggesting that microbial carbon substrates originate from sapropel layers up to 217,000 years old. 16Sribosomal RNA gene analyses revealed that as-yet… 

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