#8249. Tree Vitality and Forest Health: Can Tree-Ring Stable Isotopes Be Used as Indicators?

October 2026publication date
Proposal available till 08-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Forestry;
Ecology, Evolution, Behavior and Systematics;
Nature and Landscape Conservation;
Ecology;
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Abstract:
Purpose of Review: Society is concerned about the long-term condition of the forests. Although a clear definition of forest health is still missing, to evaluate forest health, monitoring efforts in the past 40 years have concentrated on the assessment of tree vitality, trying to estimate tree photosynthesis rates and productivity. Used in monitoring forest decline in Central Europe since the 1980s, crown foliage transparency has been commonly believed to be the best indicator of tree condition in relation to air pollution, although annual variations appear more closely related to water stress. Although crown transparency is not a good indicator of tree photosynthesis rates, defoliation is still one of the most used indicators of tree vitality. Tree rings have been often used as indicators of past productivity. However, long-term tree growth trends are difficult to interpret because of sampling bias, and ring width patterns do not provide any information about tree physiological processes.
Keywords:
Dendroecology; Forest decline; Forest health; Stable isotopes; Tree rings; Tree vitality

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