@article{fdi:010079468, title = {{T}esting the diversity-biomass relationship in riverine fish communities}, author = {{W}oods, {T}. and {C}omte, {L}. and {T}edesco, {P}ablo and {G}iam, {X}.}, editor = {}, language = {{ENG}}, abstract = {{A}im {W}e examined the diversity-biomass relationship in stream fish communities and quantified direct and indirect effects of abiotic variables on this relationship. {L}ocation {F}rance. {T}ime period 1992-2012. {M}ajor taxa studied {S}tream fishes. {M}ethods {W}e analysed the relationship between biodiversity (species richness and functional diversity) and fish community biomass at 1,357 stream sites distributed throughout {F}rance. {W}e used piecewise path analysis to quantify effects of abiotic and biodiversity variables on biomass and assess relative contributions of native and non-native species on the diversity-biomass relationship. {R}esults {B}iodiversity showed a direct positive relationship with biomass after controlling for sampling effort, and direct effects of biodiversity variables on community biomass exceeded those of climate and physical habitat variables. {O}ur analysis indicates that positive effects of species richness on biomass exceeded those of functional diversity. {I}ndirect effects of abiotic variables mediated by biodiversity metrics indicated that biomass increased in warmer, lowland habitats. {H}uman impact had no effect on native biodiversity but had a positive effect on non-native biodiversity. {M}ain conclusions {W}e provide evidence that direct effects of biodiversity on community biomass outweigh those of abiotic variables in riverine fish communities, but resource partitioning alone is unlikely to drive the effects of biodiversity on biomass in this system. {Q}uantification of the relative roles of anthropogenic impacts, biodiversity and environmental context in the regulation of ecosystem functioning will be necessary to understand the potential consequences of ongoing global change.}, keywords = {biomass ; functional traits ; niche partitioning ; non-native species ; path analysis ; species richness ; streams ; {FRANCE}}, booktitle = {}, journal = {{G}lobal {E}cology and {B}iogeography}, volume = {29}, numero = {10}, pages = {1743--1757}, ISSN = {1466-822{X}}, year = {2020}, DOI = {10.1111/geb.13147}, URL = {https://www.documentation.ird.fr/hor/fdi:010079468}, }