Plan for liming of River Søgneelva

Summary

River Søgneelva west of Kristiansand, southern Norway, is one of a few rivers in southernmost Norway that not yet has been limed, although acidification is regarded as a problem for the Atlantic salmon population. Acidification in this river is of an episodic character, and the most pronounced effects result from episodic input of sea salts during heavy storm and rain events. Under such events, sodium is exchanged in the soil with H+ and aluminium ions, which are leached to surface waters thus resulting in potentially toxic conditions. ...