Marine Biology

, Volume 36, Issue 2, pp 135–146 | Cite as

Natürliche Oberflächenfilme im Seegebiet vor Sylt

  • U. H. Brockmann
  • G. Kattner
  • G. Hentzschel
  • K. Wandschneider
  • H. D. Junge
  • H. Hühnerfuß


The physical and chemical properties of the sea surface can be altered considerably by the formation of slicks and the accumulation of particles (including plankton). Investigations of natural slicks near the island of Sylt consisted of analyses of the dissolved and particulate surface-active substances, as well as the identification of plankton and bacteria collected by a surface-film sampler. The analyzed surface material consisted primarily of phytoplankton (Prorocentrum micans in particular), bacteria, detritus and dissolved compounds of fatty acids. These fatty acid compounds alone would not account for the slick. The slick appeared to be caused by the calm weather, the active accumulation of P. micans at the surface, and the increase in bacteria associated with this accumulation. Here a decrease was observed in the dissolved surface-active substances compared with the concentration usually found in normal surface waters, of which the total fatty acid content in a sample was taken as indicator. In some cases a correlation was found between fatty acids and particulate matter in naturally occurring slicks. Particularly large variations were found in the fatty acid patterns in the filtrate and filter residue at a time when no slick was present and no particulate matter had accumulated at the surface.


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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • U. H. Brockmann
    • 1
  • G. Kattner
    • 1
  • G. Hentzschel
    • 2
  • K. Wandschneider
    • 2
  • H. D. Junge
    • 1
  • H. Hühnerfuß
    • 1
  1. 1.Institut für Organische Chemie und Biochemie der Universität HamburgHamburgGermany
  2. 2.Institut für Allgemeine Botanik und Botanischer Garten der Universität HamburgHamburgGermany

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