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Attachment of Bacteria: Advantage or Disadvantage for Survival in the Aquatic Environment

  • H.-G. Hoppe
Part of the Life Sciences Research Reports book series (DAHLEM, volume 31)

Abstract

This review is based on the evaluation of observations of attached bacterial numbers and activities from the aquatic biosphere. The term “activity” is discussed with respect to these bacteria, and it is suggested that measurements of extracellular activities should be applied as a most relevant means to determine the ecological role of attached bacteria. The portion of attached bacteria can vary from a few % to 94% of total bacteria abundance in different aquatic regions depending on particle abundance, particle composition, and nutrient conditions in the water phase. Characteristics of uptake and respiration of dissolved organic compounds do not necessarily exhibit an advantage for attached bacteria in comparison to free-living ones. However, preliminary experiments have shown that attached bacteria are provided with special extracellular enzymatic faculties concerning Vmax and Km of selected enzymes. In sediment systems, where mechanical stress can be a dominant factor, attachment to protected areas is a necessity for the survival of bacteria.

Keywords

Extracellular Enzymatic Activity Bacterial Attachment Attached Bacterium Kaolin Particle Attached Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Dr. S. Bernhard, Dahlem Konferenzen, Berlin 1984

Authors and Affiliations

  • H.-G. Hoppe
    • 1
  1. 1.Institut für MeereskundeKielF.R. Germany

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