Scientific Note: Loblolly Pine Traumatic Resin Ducts Serve as Indicators of Cool-Season Weather Events at Nags Head, North Carolina

IF 0.2 4区生物学 Q4 PLANT SCIENCES

Castanea Pub Date : 2022-01-07 DOI:10.2179/0008-7475.86.2.296

Avery A. Catherwood, P. Knapp, T. Mitchell

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引用次数: 2

Abstract

ABSTRACT We present a method for recording cool-season (mid-October–May) weather events near Nags Head, North Carolina. Standardized traumatic resin duct frequency (TRDsf) formations in loblolly pine (Pinus taeda L.) were determined from earlywood radial growth samples using the number of traumatic resin ducts that occur in response to stressful weather events. Based on a sample of 39 cores collected at Nags Head Woods Ecological Preserve during summer 2020, we tested if the occurrence of traumatic resin ducts in the earlywood was caused by late-season tropical cyclones, mid-latitude windstorms, and snow/ice storms and served as a proxy for extreme weather frequency during 1950–2019. TRDsf was significantly related to years that had at least one documented cool-season weather event. The average TRDsf in a non-storm year was 1.95 while the average for a storm year was 2.99. Further, TRDsf was correlated with the number of cool-season weather events and there was no tree age-related bias to storm-event detection. These results support using TRD frequency to reconstruct cool-season storm history beyond current climate records at locations where older (150+ years) stands of loblolly pine forests exist along coastal North Carolina.

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科学说明:火炬松创伤树脂管是北卡罗莱纳州纳格斯黑德寒冷季节天气事件的指示器

摘要：我们提出了一种记录北卡罗来纳州纳格斯黑德附近凉爽季节（十月中旬至五月）天气事件的方法。火炬松（Pinus taeda L.）的标准化创伤树脂导管频率（TRDsf）形成是从早期木材径向生长样本中确定的，使用了在应对压力天气事件时发生的创伤树脂导管的数量。基于2020年夏季在Nags Head Woods生态保护区收集的39个岩芯样本，我们测试了早期木材中创伤性树脂管的发生是否是由季节后期的热带气旋、中纬度风暴和雪/冰风暴引起的，并作为1950年至2019年极端天气频率的指标。TRDsf与至少有一次记录在案的凉爽季节天气事件的年份显著相关。非风暴年的平均TRDsf为1.95，而风暴年的均值为2.99。此外，TRDsf与凉爽季节天气事件的数量相关，并且对风暴事件的检测没有与树木年龄相关的偏见。这些结果支持使用TRD频率在北卡罗来纳州沿海存在较老（150多年）火炬松林的地区重建当前气候记录之外的冷季风暴历史。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Castanea 生物-植物科学

CiteScore

0.50

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： Castanea is named in honor of the American Chestnut tree. Castanea is thebotanical name for Chestnuts, dating back to what the ancient Greeks calledthem. The American Chestnut is a critically endangered tree that once made up 35%of the forests of the Eastern US before being devastated by a blight thatdestroyed up to 4 billion American Chestnut trees. Castanea serves professional and amateur botanists by reviewing andpublishing scientific papers related to botany in the Eastern United States. We accept papers relating to plant biology, biochemistry, ecology, floristics,physiology and systematics.