Data and R code used in Lenk et al. "Elevated tree mortality as a regeneration niche for oak? Testing different management approaches in a meliorated floodplain forest"

This repository contains the R code and associated data, enabling the reproduction of the analyses and visualisations of the results presented in the manuscript “Elevated tree mortality as a regeneration niche for oak? Testing different management approaches in a meliorated floodplain forest” (Lenk, A., Waha, S., Wirth, C. (2025), Forest Ecology and Management, doi.org/10.1016/j.foreco.2025.122678).

Folder structure

Data with data Abstracts and meta data:climate_data_2022_2023.xlsxoaks_vitality.xlsxoaks_size.xlsxoaks_C13.xlsxoak_germination.xlsxopenness_22_23.xlsx

R Scripts:00-preamble.R loads all required packages01-data-carpentry.R loads all datasets and prepares the analysis of all experimental periods.02-oaks_contingency_and_ANOVAs.R compares oak Response characteristics between forest types and years03-multivariate-analyses.R calculates multivariate analyses (PCAs and multivariate mixed-effects models) for all oak Response charactersitics depending on forest types and years04-microclimate-and-drought-stress.R compares microclimate between forest types and years, models the dependencies of drought stress on microclimate and models the interaction effects of drought stress and openness on oak Response characteristics

Information of related software and package versions used in the script:R version 4.4.0 (2024-04-24 ucrt)Platform: x86_64-w64-mingw32/x64Running under: Windows 11 x64 (build 26100)Matrix products: default ContactPlease contact me at [e-mail] if you have further questions.

本仓库包含用于复现论文《升高的树木死亡率是否可作为橡树的更新生态位？在改良泛滥平原森林中测试不同管理方案》（Lenk, A., Waha, S., Wirth, C. (2025), Forest Ecology and Management, doi.org/10.1016/j.foreco.2025.122678）中所呈现结果的分析与可视化的R代码及配套数据。

文件夹结构

数据文件（含数据摘要与元数据）：
climate_data_2022_2023.xlsx
oaks_vitality.xlsx
oaks_size.xlsx
oaks_C13.xlsx
oak_germination.xlsx
openness_22_23.xlsx

R脚本：
00-preamble.R：加载所有所需依赖包
01-data-carpentry.R：加载所有数据集并预处理所有实验周期的分析数据
02-oaks_contingency_and_ANOVAs.R：对比不同林型与年份下橡树的响应特征
03-multivariate-analyses.R：针对林型和年份对橡树各项响应特征的影响，开展多元分析（主成分分析PCA与多元混合效应模型）
04-microclimate-and-drought-stress.R：对比不同林型与年份间的微气候差异，构建干旱胁迫对微气候的响应模型，并探究干旱胁迫与开阔度对橡树响应特征的交互效应

本脚本所使用的相关软件及包版本信息：
R版本 4.4.0（2024-04-24 ucrt）
平台：x86_64-w64-mingw32/x64
运行环境：Windows 11 x64（内部版本26100）
矩阵运算：默认

联系方式
如有任何疑问，请联系：[e-mail]