
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: Feb. 17, 2025
Abstract Globally, forest ecosystems face increasing climate warming-driven stress. Crown dieback is commonly used as an indicator of declining tree vitality and closely related to reduced stem radial growth rates. In a xeric northern Patagonian Nothofagus pumilio population, in which the majority trees possess damaged crowns, we explored relationship between percent crown damage trends (basal area increment, BAI), interannual variability, sensitivity growth. The show stable BAI since about 1940 despite 5 > 50% damage, ranges from small branches presence decades-old snagged branches. A minority with more severe (> 50 95%) continued decline during last 80 years, but have not yet died. was best predictor trend turned negative at damage. Stronger showed higher summer heat drought. Thus, health this population apparently threatened by up 50%. Rather, might profit foliage area, allowing them stabilize their water relations maintain fairly slow drying climate.
Language: Английский