@article{fdi:010085075, title = {{D}istance decay 2.0-{A} global synthesis of taxonomic and functional turnover in ecological communities}, author = {{G}raco-{R}oza, {C}. and {A}arnio, {S}. and {A}brego, {N}. and {K}ulbicki, {M}ichel and et al.}, editor = {}, language = {{ENG}}, abstract = {{A}im: {U}nderstanding the variation in community composition and species abundances (i.e., beta-diversity) is at the heart of community ecology. {A} common approach to examine beta-diversity is to evaluate directional variation in community composition by measuring the decay in the similarity among pairs of communities along spatial or environmental distance. {W}e provide the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance by analysing 148 datasets comprising different types of organisms and environments. {L}ocation: {G}lobal. {T}ime period: 1990 to present. {M}ajor taxa studied: {F}rom diatoms to mammals. {M}ethod: {W}e measured the strength of the decay using ranked {M}antel tests ({M}antel r) and the rate of distance decay as the slope of an exponential fit using generalized linear models. {W}e used null models to test whether functional similarity decays faster or slower than expected given the taxonomic decay along the spatial and environmental distance. {W}e also unveiled the factors driving the rate of decay across the datasets, including latitude, spatial extent, realm and organismal features. {R}esults: {T}axonomic distance decay was stronger than functional distance decay along both spatial and environmental distance. {F}unctional distance decay was random given the taxonomic distance decay. {T}he rate of taxonomic and functional spatial distance decay was fastest in the datasets from mid-latitudes. {O}verall, datasets covering larger spatial extents showed a lower rate of decay along spatial distance but a higher rate of decay along environmental distance. {M}arine ecosystems had the slowest rate of decay along environmental distances. {M}ain conclusions: {I}n general, taxonomic distance decay is a useful tool for biogeographical research because it reflects dispersal-related factors in addition to species responses to climatic and environmental variables. {M}oreover, functional distance decay might be a cost-effective option for investigating community changes in heterogeneous environments.}, keywords = {beta-diversity ; biogeography ; environmental gradient ; spatial distance trait}, booktitle = {}, journal = {{G}lobal {E}cology and {B}iogeography}, volume = {[{E}arly access]}, numero = {}, pages = {[23 p.]}, ISSN = {1466-822{X}}, year = {2022}, DOI = {10.1111/geb.13513}, URL = {https://www.documentation.ird.fr/hor/fdi:010085075}, }