Intra-individual variation in wood traits from 20 tropical tree species

This dataset contains wood traits measured on wood segments from near pith (sapling) and near bark (adult) for 20 tree species (three adults each) from Barro Colorado Island, Panama. In the dataset, unique IDs are provided for species, species and individual tree combined, and wood segment. Also provided in the dataset are the radial position for each segment (i.e., inner or near pith vs. outer or near bark), and the distance from pith from which the wood segment was obtained. Wood traits measured on each wood segment include wood density, and anatomical traits including fiber lumen area, fiber wall thickness, vessel density, vessel area, and fractions of area occupied each tissue type (vessel, fiber, fiber wall, fiber lumen, and parenchyma). The attached text file provides further description of the variable names in the dataset and unit of measurement. However, details of the methods used in measuring these wood traits can be found in Osazuwa-Peters, Oyomoare L., S. Joseph Wright, and Amy E. Zanne (2017). Linking wood traits to vitatl rates in tropical rainforest trees: insights from comparing sapling and adult wood. American Journal of Botany; in press.<br>

本数据集涵盖采自巴拿马巴罗科罗拉多岛（Barro Colorado Island）的20个树种的木材性状数据，所有木材试样均取自髓心（pith）附近（幼龄木，sapling）与树皮（bark）附近（成年木，adult），每个树种包含3个成年个体的试样。本数据集分别为物种、物种与单株树木的组合，以及木材试样提供了唯一标识符（ID）。数据集同时包含每个木材试样的径向位置（radial position，即髓心内侧/附近 vs 树皮外侧/附近），以及该木材试样的获取位置距髓心的距离。每个木材试样的测量性状包括木材密度（wood density），以及解剖学性状：纤维腔面积（fiber lumen area）、纤维壁厚（fiber wall thickness）、导管密度（vessel density）、导管面积（vessel area），以及各组织类型（导管、纤维、纤维壁、纤维腔、薄壁组织（parenchyma））所占的面积比例。附带的文本文件对本数据集的变量名称与测量单位进行了详细说明。不过这些木材性状的测量方法细节可参阅Osazuwa-Peters, Oyomoare L.、S. Joseph Wright与Amy E. Zanne（2017）的研究论文《将木材性状与热带雨林树木的生活史速率关联：对比幼龄木与成年木的研究启示》，该论文发表于《美国植物学杂志（American Journal of Botany）》，处于已接收待刊状态。