Extreme floristic turnover between coastal fog oases and Andean shrublands: lichen diversity and community assembly in southern Peru — dataset and analysis scripts

This repository contains the data and analysis scripts supporting the manuscript entitled “Extreme floristic turnover between coastal fog oases and Andean shrublands: lichen diversity and community assembly in southern Peru”. The study documents lichen diversity and community differentiation across coastal fog oases and Andean shrublands in the Moquegua region, southern Peru.

The repository includes the species abundance matrix at the sampling-unit level, the taxonomic checklist, processed community matrices used in the main analyses, station-level metadata, and R scripts for data preparation, alpha diversity, beta diversity partitioning, functional composition, diagnostic species analysis, and final figure assembly.

Sampling was conducted across eight sectors representing two contrasting ecosystem types: three coastal fog oasis sectors (Tacahuay, Huacaluna, and Amoquinto) and five Andean shrubland sectors (Altarani, Alto Coscore, Calientes, Charaque, and Tala). The full sampling design comprised 40 stations and 200 sampling units. Because no lichen species were recorded in Amoquinto under the standardized sampling protocol, this sector was retained in richness and detection summaries but excluded from species-composition analyses requiring non-empty community matrices.

This repository was prepared specifically for the current manuscript submission and contains the analytical inputs and scripts corresponding to the results reported in this version of the study.

本仓库包含为题为《秘鲁南部沿海雾生绿洲与安第斯灌丛间极端区系更替：地衣多样性与群落构建》的手稿提供支撑的数据与分析脚本。本研究记录了秘鲁南部莫克瓜（Moquegua）地区沿海雾生绿洲与安第斯灌丛的地衣多样性及群落分化特征。

本仓库涵盖采样单元水平的物种多度矩阵、分类学名录、核心分析所用的预处理群落矩阵、站点级元数据，以及用于数据预处理、α多样性分析、β多样性分区、功能组成分析、指示物种分析与最终图表组装的R脚本。

本次采样覆盖代表两类截然不同生态系统的8个片区：3个沿海雾生绿洲片区（Tacahuay、Huacaluna与Amoquinto），以及5个安第斯灌丛片区（Altarani、Alto Coscore、Calientes、Charaque及Tala）。完整采样设计包含40个站点与200个采样单元。因按照标准化采样规程未在Amoquinto片区记录到任何地衣物种，该片区被保留于物种丰富度与检出汇总分析中，但在需使用非空群落矩阵的物种组成分析中被排除。

本仓库专为本次手稿投稿筹备，包含对应本版本研究报告结果的分析输入数据与脚本。