@article{fdi:010079862, title = {{G}rassland-to-crop conversion in agricultural landscapes has lasting impact on the trait diversity of bees}, author = {{L}e {P}rovost, {G}. and {B}adenhausser, {I}. and {V}iolle, {C}. and {R}equier, {F}abrice and {D}'{O}ttavio, {M}. and {R}oncoroni, {M}. and {G}ross, {L}. and {G}ross, {N}.}, editor = {}, language = {{ENG}}, abstract = {{C}ontext {G}lobal pollinator decline has motivated much research to understand the underlying mechanisms. {A}mong the multiple pressures threatening pollinators, habitat loss has been suggested as a key-contributing factor. {W}hile habitat destruction is often associated with immediate negative impacts, pollinators can also exhibit delayed responses over time. {O}bjectives {W}e used a trait-based approach to investigate how past and current land use at both local and landscape levels impact plant and wild bee communities in grasslands through a functional lens. {M}ethods {W}e measured flower and bee morphological traits that mediate plant-bee trophic linkage in 66 grasslands. {U}sing an extensive database of 20 years of land-use records, we tested the legacy effects of the landscape-level conversion of grassland to crop on flower and bee trait diversity. {R}esults {L}and-use history was a strong driver of flower and bee trait diversity in grasslands. {P}articularly, bee trait diversity was lower in landscapes where much of the land was converted from grassland to crop long ago. {B}ee trait diversity was also strongly driven by plant trait diversity computed with flower traits. {H}owever, this relationship was not observed in landscapes with a long history of grassland-to-crop conversion. {T}he effects of land-use history on bee communities were as strong as those of current land use, such as grassland or mass-flowering crop cover in the landscape. {C}onclusions {H}abitat loss that occurred long ago in agricultural landscapes alters the relationship between plants and bees over time. {T}he retention of permanent grassland sanctuaries within intensive agricultural landscapes can offset bee decline.}, keywords = {{F}unctional trait diversity ; {G}rassland ; {H}abitat loss ; {L}and-use changes ; {L}andscape history ; {P}lant-pollinator interactions}, booktitle = {}, journal = {{L}andscape {E}cology}, volume = {36}, numero = {1}, pages = {281--295}, ISSN = {0921-2973}, year = {2021}, DOI = {10.1007/s10980-020-01141-2}, URL = {https://www.documentation.ird.fr/hor/fdi:010079862}, }