Surveillance monitoring of reference rivers in 2017
- Year of publication
- 2018
- Contributors
- Therese Fosholt Moe, Jan-Erik Thrane, Jonas Persson, Knut Andreas Eikland Bækkelie, Knut Marius Myrvold, Kjetil Olstad, Øyvind Aaberg Garmo, Merete Grung, Heleen de Wit
Jan-Erik Thrane
Jonas Persson
Merete Grung
Summary
Monitoring of reference rivers began in May 2017 and is part of the Norwegian authorities' surveillance monitoring. This report shows the results from the start-up year, when a total of 47 water bodies were monitored. A complementary range of water bodies will be monitored in 2018, and then there will be a turnover so that each water body is examined every other year. In each water body, one location has been monitored in the lower part of the stream/catchment, where water chemistry was measured monthly and biology has been monitored once. Water chemistry includes nutrients, acidification parameters, metals and a variety of supporting parameters. Biology includes benthic algae, macroinvertebrates and fish (fish were monitored at 1-7 locations in each water body). Environmental pollutants in fish have been measured in nine of the water bodies. The purpose is to strengthen the data foundation for the determination of reference values in different river types, to test methodology for status classification in Norwegian rivers, to contribute to Norway's reporting requirements in accordance with the Water Framework Directive (WFD), as well as to spot long-term changes in Norwegian waters. (...)