BioTIME 2.0: expanding and improving a database of biodiversity time series

Here we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies in the database, and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R package (BioTIMEr) to facilitate use of the database.

We include here:

• SQL file of the database - biotime_v2_sql_15April25.sql
• RDS file of the query combining raw data with species names - biotime_v2_query_15April25.rds
• csv file for metadata information - biotime_v2_metadata_15April25.csv
• csv file of citations - references_biotime_v2_15April25.csv
• text file of BIB text citations - BIB_biotime_v2_15April25.csv.txt

for issue of version 2.0 of the BioTIME database