Effects of stem anatomical and structural traits on responses to stem damage: an experimental study in the Bolivian Amazon
Effects of stem anatomical and structural traits on responses to stem damage: an experimental study in the Bolivian Amazon
复制标题
茎解剖和结构特征对茎损伤反应的影响：玻利维亚亚马逊地区的一项实验研究
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
B. Bolker
中科院分区：
文献类型：
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作者：
C. Romero;B. Bolker
树种在生境中的持久性取决于它们避免和应对干扰相关损害的能力。对茎损伤的反应因物种而异，但通常包括树皮伤口愈合和防止木质部腐烂蔓延。这些反应与解剖学、结构和生理特征有关。本研究探讨了木质部（导管大小和（或）丰富，薄壁组织丰富，射线宽度，木材密度）和韧皮部（树皮厚度，比例活内树皮，射线宽度和（或）膨胀，射线间距离，和组织密度）性状与干损伤的反应在7个物种从玻利维亚亚马逊。树皮伤口闭合率和径向木质部腐烂渗透进行了比较2年后，实验性损害。一个物种，关闭树皮伤口迅速（100%，ChorisiaspeciosaA。圣-希尔）。在限制木质部径向腐烂扩展（1.7 mm）方面是无效的。而光叶假单胞菌Pseudolmedia laevis（Ruiz & Pav.）J.F. Macbr.，一个能愈合伤口的物种
Persistence of tree species in a habitat depends on their ability to avoid and respond to disturbance-related damage. Responses to stem damage vary among species but typically include bark wound closure and prevention of xylem decay spread. These responses are associated with anatomical, structural, and physiological traits. This study explores how xylem (vessel size and (or) abundance, parenchyma abundance, ray width, and wood density) and phloem (bark thickness, proportion of live inner bark, ray width and (or) dilation, inter-ray distance, and tissue density) traits relate to responses to stem damage in seven species from the Bolivian Amazon. Rates of bark wound closure and radial xylem decay penetration were compared 2 years after experimental damage. A species that closed bark wounds rapidly (100% in Chorisia speciosa A. St.-Hil.) was not efficient at constraining xylem radial decay spread (1.7 mm). The opposite was true for Pseudolmedia laevis (Ruiz & Pav.) J.F. Macbr., a species that closed wounds ...