Quantitative phenological observations of a mixed beech forest in northern Switzerland with digital photography

Ahrends, Hella EllenHella EllenAhrendsBrügger, RobertRobertBrüggerStöckli, RetoRetoStöckliSchenk, JürgJürgSchenkMichna, PavelPavelMichnaJeanneret, FrançoisFrançoisJeanneretWanner, HeinzHeinzWannerEugster, WernerWernerEugster2025-01-082025-01-082008https://boris-portal.unibe.ch/handle/20.500.12422/196498enQuantitative phenological observations of a mixed beech forest in northern Switzerland with digital photographyarticle10.7892/boris.3427900025998950000110.1029/2007JG000650