Native herbivore browsing alters plant physical and chemical traits in a eucalypt forest understory

Macropods exhibit selective herbivory on plant traits within and between species and hence can alter plant trait variation. In this study we asked, what are the effects of macropod herbivory on intraspecific variation in plant traits of forest understorey species? We tested the effects of herbivory by macropods on eight plant traits, in nine understorey species using a herbivore exclusion experiment. Generalised linear mixed models were used to test for differences between herbivory treatments in trait means as well as variation within species and at the community level. Macropod herbivory resulted in differences in either the mean trait value or trait variance within a species for seven of the eight tested plant traits. Macropod exclusion resulted in larger dimensions of size for most species, as well as changes in specific leaf area, moisture content, and carbon content of leaves. Further, community-weighted means of specific leaf area, moisture content, and leaf nitrogen were lower i..., Please review the attached README document and the accompanying publication under the same title as the dataset., Requires microsoft excel., # Native herbivore browsing alters plant physical and chemical traits in a eucalypt forest understory Dataset contains six excel files containing raw data used for calculations of trait values for nine species in an open eucalypt understorey under two herbivory treatments. Data is also used to calculate community weighted means of those traits. All data required to generate manuscript tables and figures as well as those in supplementary documents are included and detailed below. Size: 83kb Format: .csv (5 files) ## Description of the data and file structure Each csv file is described below along with a description of any column headers. **NutrientTraitData** --> contains raw carbon and nitrogen nutrient data for all species at each site. Dimensions: 96 rows x 4 columns Column headings: Species = the species for which the data was measured. Treatment = which treatment the species was under, open (accessible to Macropods) or exclosure (fenced off to Macropods). C (%) = carbon as ...袋鼠科植食动物（Macropods）会对物种内及物种间的植物性状产生选择性取食作用，进而能够改变植物性状的变异程度。本研究提出科学问题：袋鼠科植食动物的取食对桉树林下层物种的植物性状种内变异会产生何种影响？ 本研究通过植食动物排除实验，针对9种林下层植物的8项植物性状，检验了袋鼠科植食动物取食的效应。研究采用广义线性混合模型（Generalised linear mixed models），检验了不同取食处理下物种内以及群落水平上的性状均值与性状变异差异。 在测试的8项植物性状中，有7项性状的物种内均值或性状方差在袋鼠科植食动物取食作用下出现显著差异。排除袋鼠科植食动物后，多数物种的体型相关指标更大，同时叶片的比叶面积（specific leaf area）、含水量以及碳含量均发生改变。进一步而言，比叶面积（specific leaf area）、叶片含水量与叶片氮含量的群落加权均值（community-weighted means）均有所…… 请审阅随附的README文档以及与本数据集同名的配套发表论文。本数据集需使用微软Excel（Microsoft Excel）进行处理。 # 本土植食动物取食改变桉树林下层植物的物理与化学性状（Native herbivore browsing alters plant physical and chemical traits in a eucalypt forest understory） 本数据集包含6个Excel文件，涵盖了两种植食处理下的开放桉树林下层中9个物种的性状值计算所需的原始数据，同时也可用于计算这些性状的群落加权均值（community-weighted means）。 本数据集包含了生成论文表格、插图以及补充材料所需的全部数据，详情如下。 数据大小：83KB；格式：.csv（共5个文件） ## 数据及文件结构描述 下文将逐一介绍每个csv文件及其列标题。 **NutrientTraitData（养分性状数据）**：包含所有样地各物种的原始碳、氮养分数据。维度：96行×4列。 列标题说明： Species = 对应测定数据的物种； Treatment = 物种所处的处理组，包括"open"（可接触袋鼠科植食动物，即开放组）与"exclosure"（围栏隔绝袋鼠科植食动物，即排除组）； C (%) = 以百分比表示的碳含量……