标题：Hardangerfjorden - produksjon av laksefisk og effekter p. de ville bestandene av laksefisk / The Hardanger Fjord - Salmonid Aquaculture and effects on wild salmonid populations
摘要：Wild populations of salmon and seatrout in the Hardanger Fjord show significant declines in
recent years.The report also describes the hydrographical conditions and the aquaculture production
of salmonids in the fjord. The official numbers of adult salmon lice predating on cage reared
salmon are used to estimate the production of salmon lice during spring in this fjord.
It is assumed that salmon lice are the most acute threat to wild salmonids in the fjord, but
the genetic impact of farmed escapees is also of great concern. A lowering of the action level
for salmon lice treatment and initiation of a environmental survaillance programme is proposed.
