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Citation for Study 21294

Citation title: "Dry season characteristics in western Amazonia underlie the divergence of Astrocaryum section Huicungo (Arecaceae) and evaluation of potential anatomical adaptations".

Study name: "Dry season characteristics in western Amazonia underlie the divergence of Astrocaryum section Huicungo (Arecaceae) and evaluation of potential anatomical adaptations".

This study is part of submission 21294 (Status: Published).

Citation

Jimenez-vasquez V.A., Millan B., Machahua M., Kahn F., Ramirez R., Pintaud J., & Roncal J. 2017. Dry season characteristics in western Amazonia underlie the divergence of Astrocaryum section Huicungo (Arecaceae) and evaluation of potential anatomical adaptations. Botanical Journal of the Linnean Society, 185(3): 291?306.

Authors

• Jimenez-vasquez V.A. 051965194584
• Millan B.
• Machahua M.
• Kahn F.
• Ramirez R.
• Pintaud J.
• Roncal J. (submitter) +1 709 3516771

Abstract

Population and species divergence in South America are usually attributed to geographic barriers in the form of rivers, mountains or climate. In Western Amazonia (<1000 m of elevation) case studies addressing the ecological niche as a divergent selection agent are scarce. Using sequences from five plastid and six low-copy nuclear DNA regions, we reconstructed coalescent species phylogenetic trees for Astrocaryum section Huicungo (15 species, Arecaceae), which corroborated the presence of two lineages distributed north and south of 5?S in Western Amazonia. Using seven climatic, elevation, and eight soil variables we evaluated the ecological niche of each lineage. A north to south precipitation gradient was associated with each lineage. Notably, a higher driest month precipitation, lower seasonality, and lower elevation were attributed to the northern clade, while the opposite was found for the southern clade. We also explored the diagnostic and evolutionary importance of 35 anatomical and 31 morphological characters using a phylogenetic analysis and ancestral character reconstructions. None of the anatomical characters were diagnostic for either lineage. However, hypodermal cell wall width and the location of aerenchyma had different ancestral states for the two lineages, and their adaptive values to the precipitation regime differences are discussed

Keywords

anatomy ? coalescent species tree ? driest month - ecological speciation - morphology ? Neotropics - precipitation seasonality ? species distribution modeling

External links

• DOI: 10.1093/botlinnean/box060

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S21294
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref27425,
  	 author = {Victor  Alberto  Jimenez-Vasquez and Betty  Millan and Miguel  Machahua and Francis  Kahn and Rina   Ramirez and Jean-Christophe  Pintaud and Julissa  Roncal},
  	 title = {Dry season characteristics in western Amazonia underlie the divergence of Astrocaryum section Huicungo (Arecaceae) and evaluation of potential anatomical adaptations},
  	 year = {2017},
  	 keywords = {anatomy ? coalescent species tree ? driest month - ecological speciation - morphology ? Neotropics - precipitation seasonality ? species distribution modeling},
  	 doi = {10.1093/botlinnean/box060},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Botanical Journal of the Linnean Society},
  	 volume = {185},
  	 number = {3},
  	 pages = {291?306},
  	 abstract = {Population and species divergence in South America are usually attributed to geographic barriers in the form of rivers, mountains or climate. In Western Amazonia (<1000 m of elevation) case studies addressing the ecological niche as a divergent selection agent are scarce. Using sequences from five plastid and six low-copy nuclear DNA regions, we reconstructed coalescent species phylogenetic trees for Astrocaryum section Huicungo (15 species, Arecaceae), which corroborated the presence of two lineages distributed north and south of 5?S in Western Amazonia. Using seven climatic, elevation, and eight soil variables we evaluated the ecological niche of each lineage. A north to south precipitation gradient was associated with each lineage. Notably, a higher driest month precipitation, lower seasonality, and lower elevation were attributed to the northern clade, while the opposite was found for the southern clade. We also explored the diagnostic and evolutionary importance of 35 anatomical and 31 morphological characters using a phylogenetic analysis and ancestral character reconstructions. None of the anatomical characters were diagnostic for either lineage. However, hypodermal cell wall width and the location of aerenchyma had different ancestral states for the two lineages, and their adaptive values to the precipitation regime differences are discussed}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 27425
  AU  - Jimenez-Vasquez,Victor  Alberto 
  AU  - Millan,Betty 
  AU  - Machahua,Miguel 
  AU  - Kahn,Francis 
  AU  - Ramirez,Rina  
  AU  - Pintaud,Jean-Christophe 
  AU  - Roncal,Julissa 
  T1  - Dry season characteristics in western Amazonia underlie the divergence of Astrocaryum section Huicungo (Arecaceae) and evaluation of potential anatomical adaptations
  PY  - 2017
  KW  - anatomy ? coalescent species tree ? driest month - ecological speciation - morphology ? Neotropics - precipitation seasonality ? species distribution modeling
  UR  - http://dx.doi.org/10.1093/botlinnean/box060
  N2  - Population and species divergence in South America are usually attributed to geographic barriers in the form of rivers, mountains or climate. In Western Amazonia (<1000 m of elevation) case studies addressing the ecological niche as a divergent selection agent are scarce. Using sequences from five plastid and six low-copy nuclear DNA regions, we reconstructed coalescent species phylogenetic trees for Astrocaryum section Huicungo (15 species, Arecaceae), which corroborated the presence of two lineages distributed north and south of 5?S in Western Amazonia. Using seven climatic, elevation, and eight soil variables we evaluated the ecological niche of each lineage. A north to south precipitation gradient was associated with each lineage. Notably, a higher driest month precipitation, lower seasonality, and lower elevation were attributed to the northern clade, while the opposite was found for the southern clade. We also explored the diagnostic and evolutionary importance of 35 anatomical and 31 morphological characters using a phylogenetic analysis and ancestral character reconstructions. None of the anatomical characters were diagnostic for either lineage. However, hypodermal cell wall width and the location of aerenchyma had different ancestral states for the two lineages, and their adaptive values to the precipitation regime differences are discussed
  L3  - 10.1093/botlinnean/box060
  JF  - Botanical Journal of the Linnean Society
  VL  - 185
  IS  - 3
  ER  -