Increasingly uncommon common toads: multidecadal, ongoing abundance decline of a widespread amphibian despite volunteer conservation action

keywords: Amphibian decline · Long-term trends · Toad · Citizen science · Common species · Road mitigation · Volunteers

Petrovan, S.O., Moor, H. & Schmidt, B.R. 2025: Increasingly uncommon common toads: multidecadal, ongoing abundance decline of a widespread amphibian despite volunteer conservation action. Biodivers Conserv.