Dams are severely disrupting life cycles of aquatic species that migrate between rivers and oceans, according to a major global review of scientific research.
The review, published in Biological Reviews, finds that dams are reducing the populations, species diversity, and genetic health of diadromous species – fish, eels, crabs and snails that depend on connected river and marine systems to feed or reproduce. These disruptions are fragmenting habitats and cutting off access to vital breeding and feeding grounds.
