@article{fdi:010060361,
  title = {{N}atural fragmentation in river networks as a driver of speciation for freshwater fishes},
  author = {{D}ias, {M}. {S}. and {C}ornu, {J}ean-{F}ran{\c{c}}ois and {O}berdorff, {T}hierry and {L}asso, {C}. {A}. and {T}edesco, {P}ablo},
  editor = {},
  language = {{ENG}},
  abstract = {{A}lthough habitat fragmentation fosters extinctions, it also increases the probability of speciation by promoting and maintaining divergence among isolated populations. {H}ere we test for the effects of two isolation factors that may reduce population dispersal within river networks as potential drivers of freshwater fish speciation: 1) the position of subdrainages along the longitudinal river gradient, and 2) the level of fragmentation within subdrainages caused by natural waterfalls. {T}he occurrence of native freshwater fish species from 26 subdrainages of the {O}rinoco drainage basin ({S}outh {A}merica) was used to identify those species that presumably arose from in-situ cladogenetic speciation (i.e. neo-endemic species; two or more endemic species from the same genus) within each subdrainage. {W}e related subdrainages fish diversity (i.e. total, endemic and neo-endemic species richness) and an index of speciation to our two isolation factors while controlling for subdrainages size and energy availability. {T}he longitudinal position of subdrainages was unrelated to any of our diversity measures, a result potentially explained by the spatial grain we used and/or the contemporary connection between {O}rinoco and {A}mazon basins via the upstream {C}asiquiare region. {H}owever, we found higher neo-endemic species richness and higher speciation index values in highly fragmented subdrainages. {T}hese results suggest that habitat fragmentation generated by natural waterfalls drives cladogenetic speciation in fragmented subdrainages. {M}ore generally, our results emphasize the role of history and natural waterfalls as biogeographic barriers promoting freshwater biodiversity in river drainage basins.},
  keywords = {},
  booktitle = {},
  journal = {{E}cography},
  volume = {36},
  numero = {6},
  pages = {683--689},
  ISSN = {0906-7590},
  year = {2013},
  DOI = {10.1111/j.1600-0587.2012.07724.x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060361},
}