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Oil pollution and plankton dynamics. I. Controlled ecosystem experiment during the 1980 spring bloom in Lindåspollene, Norway
Skjoldal, H.-R.; Dale, T.; Haldorson, H.; Pengerud, B.; Thingstad, T.F. (1980). Oil pollution and plankton dynamics. I. Controlled ecosystem experiment during the 1980 spring bloom in Lindåspollene, Norway. Neth. J. Sea Res. 16: 511-523
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Skjoldal, H.-R.
  • Dale, T.
  • Haldorson, H.
  • Pengerud, B.
  • Thingstad, T.F.

Abstract
    Petroleum derived material, nutrients, phytoplankton, bacteria and ciliates were studied in two enclosed 10 m³ water columns; one control bag (CB) and one bag (OB) with addition of 0,5l unweathered crude Efofisk oil to the surface just prior to the onset of the spring bloom. Polar photooxidation products of the oil accumulated in the water column to concentrations as high as 5 mg.l-1 and led to a more slowly developing phytoplankton bloom in the OB than in the CB. The addition of oil stimulated the bacterial population in the OB, resulting in increased bacterial numbers, high mineralization potentials for hydrocarbons (naphthalene and hexadecane), and increased consumption of inorganic nutrients. The stimulation of the heterotrophic activity was relatively minor, however, and the OB remained autotrophically dominated during the 8 weeks of the experiment, despite the introduction of large amounts of petroleum derived material.

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