Does freshwater discharge cause mortality of fjord-living zooplankton?

Stein Kaartvedt*, Dag L. Aksnes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


We suggest that the presence of dead zooplankton in samples from a Norwegian fjord could be ascribed to freshwater induced mortality. Discharge from a hydroelectric power plant generated an inward countercurrent which transported plankton towards the freshwater source. In the turbulent mixing zone near the freshwater outlet, zooplankton could presumably not avoid vertical mixing into low salinity water, where they were killed by osmotic stress.

Original languageEnglish (US)
Pages (from-to)305-313
Number of pages9
JournalEstuarine, Coastal and Shelf Science
Issue number3
StatePublished - Mar 1992
Externally publishedYes


  • Norway
  • fjords
  • freshwater discharge
  • hydroelectric
  • mortality
  • zooplankton

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science


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