Chernoobyl forests are hardly a sterile environment. I’ve not been there, but I can attest that the Bikini Atoll ecosystems {Bikini and Eneu Islands) show little that is unexpected except that the terrestrial and aquatic aquatic environments are different in their responses. Rad sources are dominated by the long-half-life isotopes. Biological damage is related to what ges ingested and incorporated in tissues.
For Chernobyl see:
The forests of Chernobyl are FAR from normal (the tone of your comment, approaching gaslighting).
Maybe you ought to read some of those papers you linked.