Impacts of recurrent dry and wet years alter long?term tree growth trajectories
نویسندگان
چکیده
Climate extremes, such as abnormally dry and wet conditions, generate abrupt shifts in tree growth, a situation which is expected to increase under predicted climate conditions. Thus, it crucial understand factors determining short- long-term performance response higher frequency intensity of extremes. We evaluated how three successive droughts years influenced growth six dominant Iberian species. Within species variation repeated was function individual traits related resource water use (diameter at breast height [DBH], wood density [WD] specific leaf area [SLA]) tree-to-tree competition across climatically contrasted populations. Furthermore, we assessed short-term accumulated impacts the performance. All showed strong decreases enhancements due years. However, patterns (AcGD) (AcGE) contrasting populations were species-specific. trait data weakly associated with either AcGD or AcGE few relevant associations found for conifers. Intraspecific variations responses climates extremes large, not explained by intraspecific variability SLA WD. Accumulated trends, showing recurrence can determine trajectories. The relationships trends more common conifers Synthesis. Repeated do only cause reductions but also This result shows lead decline. Conifers susceptible effects extreme weather events indicating that future, intense frequent will alter forests dominated these
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ژورنال
عنوان ژورنال: Journal of Ecology
سال: 2021
ISSN: ['1365-2745', '0022-0477']
DOI: https://doi.org/10.1111/1365-2745.13579