@article{fdi:010053556,
  title = {{D}o plant families with contrasting functional traits show similar patterns of endemism ? {A} case study with {C}entral {A}frican {O}rchidaceae and {R}ubiaceae},
  author = {{D}roissart, {V}incent and {S}onke, {B}. and {H}ardy, {O}. {J}. and {S}imo, {M}. and {T}aedoumg, {H}. and {N}guembou, {C}. {K}. and {S}tevart, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he influence of functional traits on floristic patterns remains poorly understood in tropical rain forests. {T}his contribution explores whether patterns of endemism of plant species are influenced by their life form and mode of dispersal. {W}e used a comprehensive dataset of 3650 georeferenced plant specimens collected in {C}ameroon belonging to 115 taxa of {O}rchidaceae and 207 {R}ubiaceae endemic to {A}tlantic {C}entral {A}frica. {S}pecies diversity of each family was compared using raw species richness ({SR}) and an index of species diversity ({S} (k) ) using subsampling procedure to correct for sampling bias. {M}easures were compared at three scales (square grids of one half-degree and one-degree per side and ecoregions) and according to elevation and continentality gradients. {S}pecies similarity between grid cells was measured using the sample-size corrected {NNESS} index. {F}or both families, {SR} and {S} (k) decreased along the continentality gradient. {I}n forest habitats below 1500 m altitude, both {O}rchidaceae and {R}ubiaceae show similar endemism patterns, but they differ in intensity. {A}t higher altitudes, {S} (k) is higher for orchids due to the presence of endemic terrestrial taxa in grasslands, where the endemic {R}ubiaceae flora is rather poor. {S}ubstantial endemism observed at the ecoregion level and turnover analysis supported the role of the {S}anaga {R}iver as a phytogeographical boundary. {S}imilar endemism patterns were observed in lowland forests for {O}rchidaceae and {R}ubiaceae, even though {O}rchidaceae are assumed to have better long distance dispersal capabilities. {T}he dispersal ability of {O}rchidaceae could be limited by the need of specific mycorhizal fungi for seed germination or host specificity for epiphytic orchids.},
  keywords = {{A}tlantic {C}entral {A}frica ; {B}iodiv{R} ; {C}ameroon ; {E}piphyte ; {F}orest refuge ; {L}ife form ; {S}anaga {R}iver ; {S}eed dispersal ; {S}hrub ; {S}ubsampling procedure},
  booktitle = {},
  journal = {{B}iodiversity and {C}onservation},
  volume = {20},
  numero = {7},
  pages = {1507--1531},
  ISSN = {0960-3115},
  year = {2011},
  DOI = {10.1007/s10531-011-0042-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053556},
}