Andrew Harbicht, Martin Österling, and Olle Calles from Karlstad University and Anders Nilsson of Lund University have a new paper out. By radio tagging Atlantic salmon smolt and following them along their downstream migration to the Baltic, they quantified the effect of both a dam and a reservoir on migratory rates while accounting for environmental covariates. The good news for salmon, if reservoirs are kept thin (river-like), and mitigative measures are taken at a dam (i.e., spilling water during the smolt migration), the effects of anthropogenic barriers can be dramatically reduced. Read more about the paper here: https://doi.org/10.1002/rra.3760
