Cristin-resultat-ID: 1246680
Sist endret: 6. august 2015, 14:27
NVI-rapporteringsår: 2015
Resultat
Vitenskapelig artikkel
2015

Dispersants have limited effects on exposure rates of oil spills on fish eggs and larvae in shelf seas

Bidragsytere:
  • Frode Bendiksen Vikebø
  • Petter Rønningen
  • Sonnich Meier
  • Bjørn Einar Grøsvik og
  • Vidar Surén Lien

Tidsskrift

Environmental Science and Technology
ISSN 0013-936X
e-ISSN 1520-5851
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2015
Publisert online: 2015
Trykket: 2015
Volum: 49
Hefte: 10
Sider: 6061 - 6069

Importkilder

Scopus-ID: 2-s2.0-84929643224

Klassifisering

Vitenskapsdisipliner

Økotoksikologi

Beskrivelse Beskrivelse

Tittel

Dispersants have limited effects on exposure rates of oil spills on fish eggs and larvae in shelf seas

Sammendrag

Early life stages of fish are particularly vulnerable to oil spills. Simulations of overlap of fish eggs and larvae with oil from different oil-spill scenarios, both without and with the dispersant Corexit 9500, enable quantitative comparisons of dispersants as a mitigation alternative. We have used model simulations of a blow out of 4500 m3 of crude oil per day (Statfjord light crude) for 30 days at three locations along the Norwegian coast. Eggs were released from nine different known spawning grounds, in the period from March 1st until the end of April, and all spawning products were followed for 90 days from the spill start at April first independent of time for spawning. We have modeled overlap between spawning products and oil concentrations giving a total polycyclic hydrocarbon (TPAH) concentration of more than 1.0 or 0.1 ppb (μg/l). At these orders of magnitude, we expect acute mortality or sublethal effects, respectively. In general, adding dispersants results in higher concentrations of TPAHs in a reduced volume of water compared to not adding dispersants. Also, the TPAHs are displaced deeper in the water column. Model simulations of the spill scenarios showed that addition of chemical dispersant in general moderately decreased the fraction of eggs and larvae that were exposed above the selected threshold values.

Bidragsytere

Frode Bendiksen Vikebø

  • Tilknyttet:
    Forfatter
    ved Oseanografi og klima ved Havforskningsinstituttet

Petter Rønningen

  • Tilknyttet:
    Forfatter
    ved Klima og miljø ved SINTEF Ocean

Sonnich Meier

  • Tilknyttet:
    Forfatter
    ved Havforskningsinstituttet

Bjørn Einar Grøsvik

  • Tilknyttet:
    Forfatter
    ved Havforskningsinstituttet
Aktiv cristin-person

Vidar Suren Lien

Bidragsyterens navn vises på dette resultatet som Vidar Surén Lien
  • Tilknyttet:
    Forfatter
    ved Oseanografi og klima ved Havforskningsinstituttet
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