These files contain data and code underlying the article "Evaluating alternative study designs for optimal sampling of species' climatic niches."

The file "itrdb_occs.csv" is a comma-delimited text file that contains site metadata downloaded from the International Tree-Ring Databank on December 17, 2018, as well as climate data associated with each site. The first 7 columns correspond to ITRDB metadata (species_code, site_code, id, x, y, genus, species), while the rest of the columns correspond to climate data downloaded from the CliMond database and other sources. See main article text for more information on climatic data.

The file "conifer_database_climoccs.csv" is a comma-delimited text file that contains similar information for botanical records pulled from the Conifer Database. **This datafile is provided for demonstration purposes only!** To use the Conifer Database for research purposes, contact Aljos Farjon (a.farjon@kew.org) and visit the Conifer Database online repository: https://herbaria.plants.ox.ac.uk/bol/conifers

The file "ecog_nichedesigncode.R" contains R code for all novel functions developed as part of this papers' analyses.