Biological responses of intertidal taxa to anthropogenic and climatic stressors: a global multilevel meta-analysis

This dataset supports a global multilevel meta-analysis of how anthropogenic and climatic stressors affect the biological responses of intertidal taxa. It contains the literature screening records (Scopus and Web of Science, search run on 1 September 2025), the full extraction matrix of 4,390 control-versus-treatment comparisons from 64 studies, and the primary analysis dataset of 3,439 Hedges' g effect sizes from 59 studies. It also includes a data dictionary, the list of included studies, the a priori classification of 185 response variables by direction of response (with an independent blind classification and inter-rater agreement), the ratio-scale classification used in a log response ratio sensitivity analysis, and the R script that reproduces all analyses, tables and figures. The data cover rocky, sandy and muddy shores and vegetated intertidal habitats worldwide and all phyla in the dataset, with Mollusca, Ochrophyta and Tracheophyta as focal phyla.