Data repository for Light-dark conditions drive variability in phosphorus and ammonium uptake by epilithic biofilms along the main stem of a Mediterranean river

Data repository for:<b>Light-dark conditions drive variability in phosphorus and ammonium uptake by epilithic biofilms</b><b> </b><b>along the main stem of a Mediterranean river</b>This repository accompanies the manuscript submitted to <b>Limnology and Oceanography </b>and contains all datasets and R scripts used to perform the analyses described in the study.---📁 Contents of this repository:<br>1. <b>R code biofilm uptake.R</b>: R script used to perform all statistical analyses described in the study, including GLMM fitting, model selection, and model averaging.2. <b>Biofilm nutrient uptake.csv</b>: CSV file containing nutrient uptake rates (SRP and NH₄⁺) for all incubations conducted under light and dark conditions.3. <b>Model selection.csv</b>: CSV file used to analyze spatial and temporal variability in physicochemical and biofilm structural variables, and to explore their influence on biofilm nutrient uptake using model selection.4. <b>Variable legend.csv</b>: CSV file listing and describing all variables in "Model_selection.csv", including full variable names, units, and acronyms.5. <b>Light-Dark uptake ratio.csv</b>: CSV file containing the light/dark uptake ratios for NH₄⁺ and SRP, averaged per site and sampling date.6. <b>NH4-SRP uptake ratio.csv</b>: CSV file containing the NH₄⁺:SRP molar uptake ratios calculated for incubations with dual nutrient additions.7. <b>Random structure selection.csv</b>: CSV file used to explore random-effect structures (Site, Time, Site + Time, Site × Time) using global models prior to model selection.---Please cite this repository if you use these data or scripts in your own research.

本数据仓库对应研究：《光照-黑暗条件驱动地中海河流干流着石生物膜（epilithic biofilm）对磷与铵摄取的变异特征》
本仓库配套投稿于《湖沼学与海洋学》（Limnology and Oceanography）的研究手稿，收录本研究所述分析流程所需的全部数据集与R脚本。
---📁 本仓库内容如下：
1. **`biofilm_uptake.R` 代码文件**：用于执行本研究全部统计分析的R脚本，涵盖广义线性混合模型（Generalized Linear Mixed Model, GLMM）拟合、模型选择与模型平均操作。
2. **生物膜营养盐摄取数据.csv**：包含所有光照与黑暗培养实验中营养盐摄取速率（可溶性活性磷（Soluble Reactive Phosphorus, SRP）与铵根离子（NH₄⁺））的CSV格式文件。
3. **模型选择数据集.csv**：用于分析理化与生物膜结构变量的时空变异，并通过模型选择方法探究其对生物膜营养盐摄取影响的CSV格式文件。
4. **变量说明表.csv**：列出并说明“模型选择数据集.csv”中全部变量的CSV格式文件，涵盖变量全称、测量单位与缩写词。
5. **光照-黑暗摄取比率数据集.csv**：包含按样点与采样日期平均后的NH₄⁺与SRP光照/黑暗摄取比率的CSV格式文件。
6. **NH₄⁺-SRP摄取比率数据集.csv**：包含双重营养盐添加培养实验中计算得到的NH₄⁺与SRP摩尔摄取比率的CSV格式文件。
7. **随机效应结构选择数据集.csv**：用于在模型选择前通过全局模型探究随机效应结构（样点、时间、样点+时间、样点×时间）的CSV格式文件。
若您在自身研究中使用本仓库的数据或脚本，请引用本数据仓库。