@article{fdi:010069289, title = {{E}xtensions of {I}sland {B}iogeography {T}heory predict the scaling of functional trait composition with habitat area and isolation}, author = {{J}acquet, {C}. and {M}ouillot, {D}. and {K}ulbicki, {M}ichel and {G}ravel, {D}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {T}heory of {I}sland {B}iogeography ({TIB}) predicts how area and isolation influence species richness equilibrium on insular habitats. {H}owever, the {TIB} remains silent about functional trait composition and provides no information on the scaling of functional diversity with area, an observation that is now documented in many systems. {T}o fill this gap, we develop a probabilistic approach to predict the distribution of a trait as a function of habitat area and isolation, extending the {TIB} beyond the traditional species-area relationship. {W}e compare model predictions to the body-size distribution of piscivorous and herbivorous fishes found on tropical reefs worldwide. {W}e find that small and isolated reefs have a higher proportion of large-sized species than large and connected reefs. {W}e also find that knowledge of species body-size and trophic position improves the predictions of fish occupancy on tropical reefs, supporting both the allometric and trophic theory of island biogeography. {T}he integration of functional ecology to island biogeography is broadly applicable to any functional traits and provides a general probabilistic approach to study the scaling of trait distribution with habitat area and isolation.}, keywords = {{A}llometric theory ; body-size ; food web ; island biogeography ; tropical reefs}, booktitle = {}, journal = {{E}cology {L}etters}, volume = {20}, numero = {2}, pages = {135--146}, ISSN = {1461-023{X}}, year = {2017}, DOI = {10.1111/ele.12716}, URL = {https://www.documentation.ird.fr/hor/fdi:010069289}, }