The current situation of the River Enns fishfauna around the Gesäuse National Park
Clemens Gumpinger, blattfisch e.U., Wels (AT)
In two segments of the Styrian part of the River Enns the effectiveness of river engineering measures, implemented in the course of a LIFE-project, were evaluated by electrofishing. No improvement was detected - probably due to the small dimension of the rehabilitation measures that could not alter the overall bad ecological condition of the River Enns in Styria. This condition results firstly from channelization, but also from hydropeaking and periods with a surplus of fish predators. Improvement can only be gained by extensive restoration programs.