TY - RPRT TI - From guidelines to practice: Operational criteria for identifying old-growth forests in northern Europe AU - Monkkonen, M. AU - Brazaitis, G. AU - Brumelis, G. AU - Jonsson, B.-G. AU - Lohmus, A. AU - Makipaa, R. AU - Syrjanen, K. PY - 2026 DO - 10.64898/2026.05.19.724771 UR - https://www.biorxiv.org/content/10.64898/2026.05.19.724771v1 ID - 10.64898/2026.05.19.724771 ER -