Dams restrict the habitats of fish, but do not necessarily prevent the spread of invasive species. This has been discovered by researchers from the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) and the Spanish University of Girona (UdG).
More than 100 scientific societies for water research, including DGL and WSCS, have published a joint declaration on the impacts of climate change on water ecosystems. They call for swift and courageous action.
​With hydropower, overfishing, climate change and pollution on the rise, populations of migratory freshwater fish species have plummeted globally by 76% on average since 1970, including a 93% collapse in Europe.
An international team of researchers succeeded in sequencing the sturgeon genome, delivering a missing piece of the puzzle essential to understanding the ancestry of vertebrates.
In addition to the offspring, also keep the particularly large, older specimens alive: This management achieves good compromises between the demands of professional and angling fishing and the natural reproductive capacity of fish stocks.
IGB investigated whether sturgeon training can increase their fitness for the wild. An important fitness factor is their feeding behavior. Already a two-week "learning lead" made the search for food more efficient.
