Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019 https://www.biorxiv.org/content/10.1101/2023.04.03.535267v1?med=mas
Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019 https://www.biorxiv.org/content/10.1101/2023.04.03.535267v1?med=mas