Monika Kowalska-Góralska and Magdalena Senze from the Section of Hydrobiology and Aquaculture of the University of Environmental and Life Sciences in Wrocław together with Robert Czerniawski and Łukasz Sługocki from the Department of General Zoology at the University of Szczecin have been examining Portuguese Corgo River.
https://upwr.edu.pl/en/news/polish_scientists_examine_contamination_of_portuguese_rivers-68.html