Data and code for the paper entitled as "Functional connections between bird eggshell stiffness and nest characteristics through risk of egg collision in nests"

Data and code for the paper entitled as "Functional connections between bird eggshell stiffness and nest characteristics through risk of egg collision in nests", which is accepted by Ecology Letters. This item includes four datasets and an R code used in the study. The four datasets are: 1. All_trees.nex Phylogenetic trees downloaded from birdtree.org for 1866 avian species with eggshell data 2. Consensus_tree.tre Consensus tree for 1850 avian species studied 3. Nest_egg_data_v3.csv Dataset on the nest characters, eggshell C number and clutch size of the 1850 avian species studied; including the following columns: Species: species names used as the tip labels in the phylogenetic trees Order: order of the species Family: family of the species Species_IOC: Scientific names of the species used in the IOC World Bird List BirdMass_g: adult body mass in gram EggMass_g: egg mass in gram LongAxis_mm: length of the long axis of the egg in mm ShortAxis_mm: length of the short axis of the egg in mm AxisRatio: ratio of the long axis length to the short axis length Asymmetry: asymmetry of egg shell Ellipticity: ellipticity of egg shell Thickness_mm: thickness of the egg shell in mm Stiffness_N/mm: stiffness of the egg shell in N/mm C: C number of the species Site: category of nest site (A: Other; B: Tree; C: Non-tree vegetation) Structure: category of nest structure (A: Scrape/Platform; B: Cavity; C: Cup; D: Dome) Attachment: category of nest attachment (A: Basal; B: Lateral/Horizontal; C: Pensile) ClutchSize: clutch size of the species 4. C_node_depth.csv Dataset on the C number values for the 1850 avian species and their ancestors estimated by BayesTrait; including the following columns: node: node IDs or tip labels in the consensus tree C: C number of the species or the ancestors node depth: branch length of the species or the ancestors in the consensus tree Passeriformes: passerine status (Y: passerine; N: non-passerine)

本数据集配套于已被《Ecology Letters》收录的论文《基于鸟巢内卵碰撞风险的鸟类蛋壳刚度与巢址特征的功能关联》（Functional connections between bird eggshell stiffness and nest characteristics through risk of egg collision in nests）。本数据集包含本研究使用的四份数据文件与一份R代码文件。四个数据集分别为：1. All_trees.nex：从birdtree.org下载的、涵盖1866个带有蛋壳数据的鸟类物种的系统发育树（phylogenetic trees）文件；2. Consensus_tree.tre：针对本次研究的1850个鸟类物种的共识系统发育树文件；3. Nest_egg_data_v3.csv：本次研究的1850个鸟类物种的巢址特征、蛋壳C值与窝卵数数据集，包含以下字段：Species：用作系统发育树分支末端标签的物种名称；Order：物种所属目级分类单元；Family：物种所属科级分类单元；Species_IOC：《IOC世界鸟类名录》中采用的物种学名；BirdMass_g：成鸟体重，单位为克（g）；EggMass_g：卵重，单位为克；LongAxis_mm：卵长轴长度，单位为毫米（mm）；ShortAxis_mm：卵短轴长度，单位为毫米；AxisRatio：卵长轴与短轴的轴长比；Asymmetry：蛋壳不对称性；Ellipticity：蛋壳椭圆度；Thickness_mm：蛋壳厚度，单位为毫米；Stiffness_N/mm：蛋壳刚度，单位为牛/毫米（N/mm）；C：物种的C值；Site：巢址类别（A：其他；B：树上；C：非树植被）；Structure：巢结构类别（A：刮坑/平台巢；B：洞巢；C：杯状巢；D：穹顶巢）；Attachment：巢附着方式类别（A：基部附着；B：侧面/水平附着；C：悬垂附着）；ClutchSize：该物种的窝卵数；4. C_node_depth.csv：基于BayesTrait估算的1850个鸟类物种及其祖先的C值数据集，包含以下字段：node：共识系统发育树中的节点ID或分支末端标签；C：物种或祖先的C值；node depth：共识系统发育树中物种或祖先的分支长度；Passeriformes：雀形目类群标注（Y：属于雀形目；N：非雀形目）