Swiss journal of hydrology

, Volume 47, Issue 2, pp 179–196 | Cite as

Die Bedeutung der vertikalen Durchmischung für die phytoplanktische Sauerstoffproduktion in einem gestauten Fliessgewässer

  • Joachim Von Löhr
Article
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Abstract

Measured oxygen concentrations over the depth in an impounded river showed considerable vertical gradients. Their numerical calculation based on concepts to be found in the literature was yet not possible. For assessing the signification of the mixing over the depth for the phytoplanktic oxygen production a mathematical concept will be developped. This enables the quantification of the influence of the turbulence dependent permanent light-dark changes upon the phytoplanktic production. The results lead to the conclusion that the mixing processes may have a stimulating effect upon the algae which rises their photosynthetic production by a factor from about 2 up to 4.

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Copyright information

© Birkhäuser Verlag 1985

Authors and Affiliations

  • Joachim Von Löhr
    • 1
  1. 1.Institut für Siedlungswasserwirtschaft der Universität KarlsruheKarlsruheBundesrepublik Deutschland

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