@article{fdi:010094255, title = {{B}io{TIME} 2.0 : expanding and improving a database of biodiversity time series}, author = {{D}ornelas, {M}. and {A}ntao, {L}. {H}. and {B}ates, {A}. {E}. and {B}rambilla, {V}. and {C}hase, {J}. {M}. and {C}how, {C}. {F}. {Y}. and {F}ontrodona-{E}slava, {A}. and {M}agurran, {A}. {E}. and {M}artins, {I}. {S}. and {M}oyes, {F}. and {S}agouis, {A}. and {P}{\'e}lissier, {R}apha{\¨e}l and {P}onton, {D}ominique and {T}edesco, {P}ablo and et al.,}, editor = {}, language = {{ENG}}, abstract = {{M}otivation{H}ere, we make available a second version of the {B}io{TIME} database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. {T}he updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. {M}oreover, we now provide an {R} package ({B}io{TIME}r) to facilitate use of the database.{M}ain {T}ypes of {V}ariables {I}ncluded{T}he database is composed of one main data table containing the abundance records and 11 metadata tables. {T}he data are organised in a hierarchy of scales where 11,989,233 records are nested in 1,603,067 sample events, from 553,253 sampling locations, which are nested in 708 studies. {A} study is defined as a sampling methodology applied to an assemblage for a minimum of 2 years.{S}patial {L}ocation and {G}rain{S}ampling locations in {B}io{TIME} are distributed across the planet, including marine, terrestrial and freshwater realms. {S}patial grain size and extent vary across studies depending on sampling methodology. {W}e recommend gridding of sampling locations into areas of consistent size.{T}ime {P}eriod and {G}rain{T}he earliest time series in {B}io{TIME} start in 1874, and the most recent records are from 2023. {T}emporal grain and duration vary across studies. {W}e recommend doing sample-level rarefaction to ensure consistent sampling effort through time before calculating any diversity metric.{M}ajor {T}axa and {L}evel of {M}easurement{T}he database includes any eukaryotic taxa, with a combined total of 56,400 taxa.{S}oftware {F}ormatcsv and. {SQL}.}, keywords = {assemblage ; biodiversity ; community ; database ; ecoinformatics ; species ; taxa ; time}, booktitle = {}, journal = {{G}lobal {E}cology and {B}iogeography}, volume = {34}, numero = {5}, pages = {e70003 [18 p.]}, ISSN = {1466-822{X}}, year = {2025}, DOI = {10.1111/geb.70003}, URL = {https://www.documentation.ird.fr/hor/fdi:010094255}, }