Global tree growth resilience to cold extremes following the Tambora volcanic eruption

Shan Gao, J. Julio Camarero, Flurin Babst and Eryuan Liang ()
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Shan Gao: Chinese Academy of Sciences
J. Julio Camarero: Instituto Pirenaico de Ecología (IPE-CSIC)
Flurin Babst: University of Arizona
Eryuan Liang: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract Although the global climate is warming, external forcing driven by explosive volcanic eruptions may still cause abrupt cooling. The 1809 and 1815 Tambora eruptions caused lasting cold extremes worldwide, providing a unique lens that allows us to investigate the magnitude of global forest resilience to and recovery from volcanic cooling. Here, we show that growth resilience inferred from tree-ring data was severely impacted by cooling in high latitudes and elevations: the average tree growth decreased substantially (up to 31.8%), especially in larch forests, and regional-scale probabilities of severe growth reduction (below −2σ) increased up to 1390%. The influence of the eruptions extended longer (beyond the year 1824) in mid- than in high-latitudes, presumably due to the combined impacts of cold and drought stress. As Tambora-size eruptions statistically occur every 200–400 years, assessing their influences on ecosystems can help humankind mitigate adverse impacts on natural resources through improved management, especially in high latitude and elevation regions.

Date: 2023
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DOI: 10.1038/s41467-023-42409-w

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