Surveillance monitoring of large Norwegian lakes 2018. Testing of methodology for monitoring and classification of ecological status according to the Water Framework Directive.

Report

Year of publication: 2019
External websites: Cristin; Arkiv
Involved from NIVA: Anne Lyche Solheim; Jonas Persson; Benoit Olivier Demars; Birger Skjelbred; Marthe Torunn Solhau Jenssen
Contributors: Anne Lyche Solheim, Ann Kristin Schartau, Terje Bongard, Knut Andreas Eikland Bækkelie, Geir Dahl-Hansen, Benoît Olivier Laurent Demars, John Gunnar Dokk, Karl Øystein Gjelland, David Hammenstig, Thomas Correll Jensen, Marit Mjelde, Jonas Persson, Odd Terje Sandlund, Birger Skjelbred, Marthe Torunn Solhaug Jenssen, Bjørn Walseng

Summary

This report presents the monitoring results for nine large Norwegian lakes in 2018, which is the 4th year of the Norwegian surveillance monitoring programme for large lakes as required by the Water Framework Directive (WFD). The primary objective of this monitoring programme is to assess the ecological status of large lakes and provide information for assessment of long-term changes of natural conditions and widespread anthropogenic activity. An additional objective is to test and adapt existing monitoring and classification methods for use in large, deep lakes.