Synthesis reveals that island species-area relationships emerge from processes beyond passive sampling

Suitable data sets were searched for on online databases. Species lists and abundances per island were extracted and organised in tables, one per data set (author-name_year). Island area, coordinates, elevation and additional sampling design information were also gathered from the articles. When area, elevation or coordinates were missing, several sources were used to retrieve them as noted in env_file_utf8.csv. All independent data sets were then aggregated in one long format table for further analysis, see the Zenodo archive associated to this data set for the R code. See the article associated to the data set for a description of the standardisation process.