Here is the link to the article: https://environment.ec.europa.eu/news/semi-natural-conditions-promote-ecological-recovery-urban-streams-2022-09-28_en
Here is a link to the original manuscript:
Goertzen D, Schneider A-K, Eggers TO & Suhling F (2022): Temporal changes of biodiversity in urban running waters – results of a twelve-year monitoring study. Basic and Applied Ecology, 58: 74-87. doi.org/10.1016/j.baae.2021.11.007