
The fish population becomes more vulnerable to herons, otters, and cormorants as the water disappears from streams and brooks in Denmark. (Archive photo). Photo: Mads Claus Rasmussen/Ritzau Scanpix
Fish in country’s rivers thirst due to drought seasons
Drought across several seasons is threatening fish populations in the country’s streams, according to DR and Finn Sivebæk, a fisheries consultant at DTU Aqua. Sivebæk indicates that the drying of streams results in the death of fish, small animals, aquatic plants, and other aquatic life, effectively resetting the ecosystem. He views these dried-up streams as a recurring issue. Many small fish hatch in early spring, but repeated droughts prevent their survival and hinder population recovery. The drought’s impact, coupled with warmer temperatures—April alone was six to seven degrees hotter than usual—has drained Danish streams. The past spring is the eighth driest in 150 years, with only a third of normal rainfall.