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Updated: May 19, 2026

Effectiveness of the Air Stripping in Two Salmonid Fish, Rainbow Trout (Oncorhynchus Mykiss) and Brown Trout (Salmo Trutta Morpha fario)
Published on: September 16, 2018
Temperature effects from hydropeaking impair egg and larval development in Danube salmon Hucho hucho and brown trout
Julius Gorenz1, Elisabeth Winter1, Joachim Pander1
1Aquatic Systems Biology Unit, School of Life Sciences, Technical University of Munich, Freising, Germany.
Abstract:
Hydropeaking is considered an important stressor for salmonids and other species in rivers affected by hydropower. In this study, we investigated the in situ effects of hydropeaking on the survival of eggs and larvae of fall spawning brown trout as well as spring spawning Danube salmon. Egg-to-fry survival of these two species decreased with increasing time of dewatering and desiccation, resulting in temperature effects of overheating and freezing of eggs and larvae. Consequently, mitigation measures should aim for slow ramping rates and sufficient water cover of spawning grounds.
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