期刊
NEW PHYTOLOGIST
卷 -, 期 -, 页码 -出版社
WILEY
DOI: 10.1111/nph.19381
关键词
hurricane; masting; pine cone production; precipitation; typhoon; wind disturbance; wind stress
Masting species, such as longleaf pine, exhibit increased cone production 1-2 years after tropical cyclones (TCs), which is attributed to the effects of increased precipitation and low-intensity winds. This study provides the first evidence of TCs directly influencing reproduction and reveals a previously unknown environmental correlate of masting in hurricane-prone forests.
Many trees exhibit masting - where reproduction is temporally variable and synchronous over large areas. Several dominant masting species occur in tropical cyclone (TC)-prone regions, but it is unknown whether TCs correlate with mast seeding. We analyzed long-term data (1958-2022) to test the hypothesis that TCs influence cone production in longleaf pine (Pinus palustris). We integrate field observations, weather data, satellite imagery, and hurricane models to test whether TCs influence cone production via: increased precipitation; canopy density reduction; and/or mechanical stress from wind. Cone production was 31% higher 1 yr after hurricanes and 71% higher after 2 yr, before returning to baseline levels. Cyclone-associated precipitation was correlated with increased cone production in wet years and cone production increased after low-intensity winds (<= 25 m s(-1)) but not with high-intensity winds (> 25 m s(-1)). Tropical cyclones may stimulate cone production via precipitation addition, but high-intensity winds may offset any gains. Our study is the first to support the direct influence of TCs on reproduction, suggesting a previously unknown environmental correlate of masting, which may occur in hurricane-prone forests world-wide.
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