Multispecies riverscape genomics

Dams and other barriers disrupt our waterways and limit fish's ability to move freely. This can lead to reduced gene flow between populations and thus to poorer genetic variation – something that makes species more vulnerable to inbreeding, disease, and climate change. This project uses the latest genome sequencing technology to study how five different fish species are affected by both natural and human barriers in an entire water system.

By analysing genetic connectivity and population structure, this project will provide new knowledge about how barriers affect evolutionary processes and species’ adaptability.

The results contribute to a deeper understanding of how hydropower, fishways and other measures within the National Action Plan for Modern Environmental Conditions (NAP) affect biodiversity. This knowledge will serve as an important basis for future decisions on how we can best preserve viable fish populations and healthy ecosystems.