Combined heat and drought events reduce first-year survival of tree seedlings, especially at southern range margins
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These are the data associated with a project testing how experimental drought and heat treatments impact survival and growth of first-year tree seedlings common to the northeastern United States. The datasets include seedling-level metrics of survival and growth (height and total biomass), approximate substrate moisture throughout the experimental period, and data on traits including leaf mass per area, minimum epidermal conductance, turgor loss point, and root-to-shoot biomass ratio. , , # Data from: Combined heat and drought events reduce first-year survival of tree seedlings, especially at southern range margins Dataset DOI: [10.5061/dryad.k3j9kd5ph](https://doi.org/10.5061/dryad.k3j9kd5ph) ## Description of the data and file structure Project: Combined heat and drought events reduce first-year survival of tree seedlings, especially at southern range margins Authors: Emily G. MacDonald, Melissa D. Cullina, Bryan J. Peterson, Jay W. Wason Date compiled: December 2025 Data compiled by Emily MacDonald ### Files and variables Note: NA= Not applicable, or absent information #### File: final_biomass_RS.csv **Description:**Â These data contain the total biomass and root-to-shoot biomass ratio of a subset of seedlings from this experiment, sampled at the end of the growing season. ##### Variables * ID:Â unique seedling identifier * chamber:Â treatment chamber (representing on experimental unit and a single application of a heat and drought treatment). There are 27 to...,
本数据集关联一项研究项目，旨在探究人工干旱与热处理对美国东北部常见一年生林木幼苗存活与生长的影响。数据集包含幼苗水平的存活与生长指标（株高及总生物量）、实验期间近似基质含水量，以及若干性状数据：比叶面积（leaf mass per area）、最小表皮导度（minimum epidermal conductance）、膨压丧失点（turgor loss point）与根冠生物量比（root-to-shoot biomass ratio）。 # 数据来源：《复合热旱胁迫降低林木一年生幼苗存活率，尤以分布范围南部边缘为甚》 数据集DOI：[10.5061/dryad.k3j9kd5ph](https://doi.org/10.5061/dryad.k3j9kd5ph) ## 数据与文件结构说明 研究项目：《复合热旱胁迫降低林木一年生幼苗存活率，尤以分布范围南部边缘为甚》 作者：艾米丽·G·麦克唐纳（Emily G. MacDonald）、梅利莎·D·库利纳（Melissa D. Cullina）、布莱恩·J·彼得森（Bryan J. Peterson）、杰伊·W·沃森（Jay W. Wason） 数据汇编日期：2025年12月 数据汇编人：艾米丽·麦克唐纳 ### 文件与变量 注：NA表示不适用或信息缺失 #### 文件：final_biomass_RS.csv **文件说明：** 本数据集包含本实验中在生长季末期采样的部分幼苗的总生物量与根冠生物量比。 ##### 变量说明 * ID：唯一幼苗标识符 * chamber：处理舱（代表一个实验单元，施加单次热旱复合胁迫处理），共27组……
