@article{fdi:010071315,
  title = {{D}ry season characteristics in western {A}mazonia underlie the divergence of {A}strocaryum section {H}uicungo ({A}recaceae) and evaluation of potential anatomical adaptations},
  author = {{J}imenez-{V}asquez, {V}. and {M}illan, {B}. and {M}achahua, {M}. and {K}ahn, {F}rancis and {R}amirez, {R}. and {P}intaud, {J}ean-{C}hristophe and {R}oncal, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}opulation and species divergence in {S}outh {A}merica are usually attributed to geographical barriers in the form of rivers, mountains or climate. {I}n western {A}mazonia (< 1000 m elevation) case studies addressing the ecological niche as a divergent selection agent are scarce. {U}sing sequences from five plastid and six low-copy nuclear {DNA} regions, we reconstructed coalescent species phylogenetic trees for {A}strocaryum section {H}uicungo (15 species, {A}recaceae), which corroborated the presence of two lineages distributed north and south of 5 degrees {S} in western {A}mazonia. {U}sing elevation, three climatic and six soil variables we evaluated the ecological niche of each lineage. {D}ifferent annual precipitation regimes were associated with each lineage. {N}otably, a lower precipitation seasonality and lower elevation were attributed for the northern clade and the opposite was found for the southern clade. {W}e also explored the diagnostic and evolutionary importance of 35 anatomical and 31 morphological characters using a phylogenetic analysis and ancestral character reconstructions. {N}one of the anatomical characters was diagnostic for either lineage. {H}owever, hypodermal cell wall width and the location of aerenchyma had different ancestral states for the two lineages, and their adaptive values to the dry season differences are discussed.},
  keywords = {anatomy ; coalescent species tree ; dry season ; ecological speciation ; morphology ; {N}eotropics ; precipitation seasonality ; species distribution ; modelling ; {PEROU} ; {BOLIVIE} ; {COLOMBI}e ; {EQUATEUR} ; {BRESIL} ; {AMAZONIE} ; {ZONE} {NEOTROPICALE}},
  booktitle = {},
  journal = {{B}otanical {J}ournal of the {L}innean {S}ociety},
  volume = {185},
  numero = {3},
  pages = {291--306},
  ISSN = {0024-4074},
  year = {2017},
  DOI = {10.1093/botlinnean/box060},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071315},
}