@article{fdi:010074870, title = {{T}he biotic and abiotic drivers of "living" diversity in the deadly traps of {N}epenthes pitcher plants}, author = {{G}aume, {L}. and {B}azile, {V}. and {B}ouss{\`e}s, {P}hilippe and {L}e {M}oguedec, {G}. and {M}arshall, {D}. {J}.}, editor = {}, language = {{ENG}}, abstract = {{N}epenthes pitcher plants are carnivorous plants that paradoxically harbor a living infauna (the inquilines) in their pitchers, which withstands the hostile conditions of the digestive fluid and plays a role in prey digestion. {B}ecause most {N}epenthes species are threatened by human activity, we aimed to assess how their inquiline communities are likewise endangered. {T}his involved testing whether arthropod infaunal composition is {N}epenthes-specific or even species-specific, as well as determining the ecological drivers of its diversity. {I}n a field experiment in {B}runei ({B}orneo), prey items were introduced into the fluid of newly open pitchers in four sympatric {N}epenthes species, and into water control reservoirs. {A}bundance, species richness and {S}hannon diversity of metazoans in all reservoirs were analyzed 1month later. {R}eservoir dimensions and fluid p{H} were measured, and the natural prey and vegetal detritus were identified and quantified. {T}he inquiline diversities of the {N}epenthes pitchers were much greater than those of the water controls. {D}issimilarity indices showed that the inquiline composition was specific to each {N}epenthes species. {T}he fate of the inquiline community is thus intrinsically linked to that of its host plant, underlining its threatened status. {I}nquiline abundance was determined by pitcher aperture diameter, pitcher volume, fluid p{H} and the prey number. {I}nquiline species richness increased solely with abiotic factors, such as fluid p{H} and pitcher aperture diameter, and thereby with habitat area, reflecting the well-known species-area relationship, but it did not vary with species richness of prey. {N}epenthes pitcher plants thus control, to some extent, the establishment of their inquilines via fluid physico-chemistry and pitcher design. {F}rom a conservation perspective, priority protection should be given to {N}epenthes species with pitchers of large aperture, keystone for a broader biodiversity.}, keywords = {{A}rthropod community ; {B}iodiversity ; {C}arnivorous plant ; {K}eystone species ; {P}hytotelma ; p{H} ; {S}pecies-area relationship ; {BORNEO} ; {BRUNEI}}, booktitle = {}, journal = {{B}iodiversity and {C}onservation}, volume = {28}, numero = {2}, pages = {345--362}, ISSN = {0960-3115}, year = {2019}, DOI = {10.1007/s10531-018-1658-z}, URL = {https://www.documentation.ird.fr/hor/fdi:010074870}, }