@article{fdi:010062559,
  title = {{F}unctional over-redundancy and high functional vulnerability in global fish faunas on tropical reefs},
  author = {{M}ouillot, {D}. and {V}illeger, {S}. and {P}arravicini, {V}aleriano and {K}ulbicki, {M}ichel and {A}rias-{G}onzalez, {J}. {E}. and {B}ender, {M}. and {C}habanet, {P}ascale and {F}loeter, {S}. {R}. and {F}riedlander, {A}. and {V}igliola, {L}aurent and {B}ellwood, {D}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}hen tropical systems lose species, they are often assumed to be buffered against declines in functional diversity by the ability of the species-rich biota to display high functional redundancy: i.e., a high number of species performing similar functions. {W}e tested this hypothesis using a ninefold richness gradient in global fish faunas on tropical reefs encompassing 6,316 species distributed among 646 functional entities ({FE}s): i.e., unique combinations of functional traits. {W}e found that the highest functional redundancy is located in the {C}entral {I}ndo-{P}acific with a mean of 7.9 species per {FE}. {H}owever, this overall level of redundancy is disproportionately packed into few {FE}s, a pattern termed functional over-redundancy ({FOR}). {F}or instance, the most speciose {FE} in the {C}entral {I}ndo-{P}acific contains 222 species (out of 3,689) whereas 38% of {FE}s (180 out of 468) have no functional insurance with only one species. {S}urprisingly, the level of {FOR} is consistent across the six fish faunas, meaning that, whatever the richness, over a third of the species may still be in overrepresented {FE}s whereas more than one third of the {FE}s are left without insurance, these levels all being significantly higher than expected by chance. {T}hus, our study shows that, even in high-diversity systems, such as tropical reefs, functional diversity remains highly vulnerable to species loss. {A}lthough further investigations are needed to specifically address the influence of redundant vs. vulnerable {FE}s on ecosystem functioning, our results suggest that the promised benefits from tropical biodiversity may not be as strong as previously thought.},
  keywords = {fish ecology ; coral reefs ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{P}roceedings of the {N}ational {A}cademy of {S}ciences of the {U}nited {S}tates of {A}merica},
  volume = {111},
  numero = {38},
  pages = {13757--13762},
  ISSN = {0027-8424},
  year = {2014},
  DOI = {10.1073/pnas.1317625111},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062559},
}