- Company News
- Posted Tuesday, June 19, 2012
Electrofishing the River Glomma
The Norwegian Institute for Nature Research
(NINA) is Norway’s leading institution for applied ecological research. NINA is responsible for long-term strategic research and commissioned applied research to facilitate the implementation of international conventions, decision-support systems and management tools, as well as the enhancement of public awareness and promotion of conflict resolution. There are many large rivers in Norway, and NINA has many projects in these rivers, e.g. environmental impact assessments of hydropower projects, monitoring and following-up different mitigation measures. However, there are many methodological challenges associated with representative sampling of fish in large river systems. In 2011, NINA took delivery of the first electrofishing boat from Smith-Root (SR-18EH
with 7.5 GPP). Our experience and results so far have been very positive, and that is why NINA purchased another electrofishing boat from Smith-Root which is suitable for smaller rivers (SR-17 CATARAFT with 7.5 GPP).
Photographs show electrofishing operations on the River Glomma, the largest river in the eastern part of Norway. In this part of the river, European grayling and brown trout dominate. All other species present in that river section were also captured (Northern pike, whitefish, European minnow, perch, brook lamprey and bullhead). During electrofishing operations in the River Glomma, about four fish were captured per minute.