Bacterial colonization and microbial decomposition of limnetic organic aggregates (lake snow)

  • Grossart H
  • Simon M
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We studied the composition, microbial colonization and organic matter fluxes of lake snow in Lake Constance, Germany, in 1993. Aggregates were collected between 6 and 25 m by SCUBA or made in the lab in rolling cylinders from samples from the epilimnion. Aggregates were composed of Living and senescent phytoplankton, zooplankton molts and carcasses, and other unidentifiable debris. Dry weight and particulate organic carbon (POC) were 3 to 20 mu g agg(-1) and 1.5 to 33 mu g C agg.(-1), respectively. Carbon in particulate combined amino acids (PCAA) was 8 to 51% of POC on aggregates but only

Author-supplied keywords

  • Amino acids
  • Ectoenzyme activities
  • In situ hybridization
  • Lake constance
  • Lake snow & bacteria
  • Pom

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  • Hans Peter Grossart

  • Meinhard Simon

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