Dendrochronological data from twelve countries proved definite growth response of black alder (<i>Alnus glutinosa</i> [L.] Gaertn.) to climate courses across its distribution range

Abstract Black alder ( Alnus glutinosa [L.] Gaertn.) is an important component of riparian and wetland ecosystems in Europe. However, data on the growth this significant broadleaved tree species very limited. Presently, black currently suffers from pathogen Phytophthora particularly threatened by climate change. The objective study was to focus impact climatic variables (precipitation, temperature, extreme events) radial across its geographic range during period 1975–2015. stands aged 46–108 years conducted 24 research plots a wide altitude (85–1015 m) 12 countries Europe Asia. most months affecting were February March, where air temperatures are more than precipitation. Heavy frost weather fluctuations first quarter year main limiting factors for diameter increment. Within geographical setting, latitude had higher effect compared longitude. variable concerning parameters altitude. temperature’s increment negative lowlands yet turned positive with increasing Moreover, sensitivity precipitation significantly decreased age stands. In conclusion, variability number pointer increased time, which caused ongoing change also possible drop groundwater level. Riparian well supplied water better adapted extremes plateau marshy sites.