Migration strategies in fishes comprise a rich, ecologically important, and socioeconomically
valuable example of biological diversity. The variation and flexibility in migration is evident …

An overview of electronic tags that can be used in fish research is given, including radio and
acoustic transmitters, data storage tags (DST, also termed archival tags), pop-up satellite …

Migratory animals are threatened by human-induced global change. However, little is known
about how stopover habitat, essential for refuelling during migration, affects the population …

For centuries, humankind has constructed dams on rivers to control flooding, provide for
irrigation and utilize potential energy for power, but generally dams had no or little provision …

Abstract Temperate eels Anguilla anguilla (European eel), A. rostrata (American eel) and A.
japonica (Japanese eel) are three catadromous species which have been declining since …

Anguillid eels are found globally in fresh, transitional and saline waters and have played an
important role in human life for centuries. The population status of several species is now of …

Resolving the controversy about hydropower is only possible based on reliable data on its
ecological effects, particularly fish welfare. Herein, we propose a comprehensive …

Construction of small hydropower plants (< 10 megawatts) is booming worldwide,
exacerbating ongoing habitat fragmentation and degradation, and further fueling biodiversity …

Efforts to increase the share of renewable energies and to reduce the negative ecological
impacts of hydropower use are driving the development of novel hydropower technologies …

According to both European and German legislation, the protection of fish populations
against the effects of hydraulic engineering structures, such as hydropower stations and …