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  • Low growth resilience to drought is related to future mortality risk in trees [Elektronski vir]
    De Soto, Lucía ...
    Severe droughts have the potential to reduce forest productivity and trigger tree mortality. Most trees face several drought events during their life and therefore resilience to dry conditions might ... be crucial to long-term survival. We assess how growth resilience to severe droughts, including its components resistance and recovery, is related to the ability to survive future droughts by using a tree-ring database of surviving and now-dead trees from 118 sites (22 species, >3,500 trees). We find that, across the variety of regions and species sampled, trees that died during water shortages were less resilient to previous non-lethal droughts, relative to coexisting surviving trees of the same species. In angiosperms, drought-related mortality risk is associated with lower resistance (low capacity to reduce impact of the initial drought), while it is related to reduced recovery (low capacity to attain pre-drought growth rates) in gymnosperms. The different resilience strategies in these two taxonomic groups open new avenues to improve our understanding and prediction of drought-induced mortality. Resilience to drought is crucial for tree survival under climate change. Here, DeSoto et al. show that trees that died during drought were less resilient to previous dry events compared to surviving conspecifics, but the resilience strategies differ between angiosperms and gymnosperms.
    Source: Nature communications [Elektronski vir]. - ISSN 2041-1723 (Vol. 11, iss. 1, 2020, str. 1-9)
    Type of material - e-article
    Publish date - 2020
    Language - english
    COBISS.SI-ID - 3170185

    Link(s):

    https://www.nature.com/articles/s41467-020-14300-5
    DiRROS - Digital repository of Slovenian research organizations
    DOI

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