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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Climatic dynamics and topography control genetic variation in Atlantic Forest montane birds

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Author(s):
Thom, Gregory [1, 2] ; Smith, Brian Tilston [1] ; Gehara, Marcelo [3, 4] ; Montesanti, Julia [5] ; Lima-Ribeiro, Matheus S. [6] ; Piacentini, Vitor Q. [7] ; Miyaki, Cristina Y. [2] ; do Amaral, Fabio Raposo [5]
Total Authors: 8
Affiliation:
[1] Amer Museum Nat Hist, Dept Ornithol, New York, NY 10024 - USA
[2] Univ Sao Paulo, Dept Genet & Biol Evolut, Rua Matao, 277, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
[3] Amer Museum Nat Hist, Sackler Inst Comparat Genom, New York, NY 10024 - USA
[4] Rutgers State Univ, Dept Biol Sci, 195 Univ Ave, Newark, NJ 07102 - USA
[5] Univ Fed Sao Paulo, Dept Ecol & Biol Evolut, Rua Prof Artur Riedel 275, BR-09972270 Diadema, SP - Brazil
[6] Univ Fed Goias, Lab Macroecol, Jatai, Go - Brazil
[7] Univ Fed Mato Grosso, Inst Biociencias, Dept Biol & Zool, Cuiaba - Brazil
Total Affiliations: 7
Document type: Journal article
Source: Molecular Phylogenetics and Evolution; v. 148, JUL 2020.
Web of Science Citations: 0
Abstract

Montane organisms responded to Quaternary climate change by tracking suitable habitat along elevational gradients. However, it is unclear whether these past climatic dynamics generated predictable patterns of genetic diversity in co-occurring montane taxa. To test if the genetic variation is associated with historical changes in the elevational distribution of montane habitats, we integrated paleoclimatic data and a model selection approach for testing the demographic history of five co-distributed bird species occurring in the southern Atlantic Forest sky islands. We found that changes in historical population sizes and current genetic diversity are attributable to habitat dynamics among time periods and the current elevational distribution of populations. Taxa with populations restricted to the more climatically dynamic southern mountain block (SMB) had, on average, a six-fold demographic expansion, whereas the populations from the northern mountain block (NMB) remained constant. In the current configuration of the southern Atlantic Forest montane habitats, populations in the SMB have more widespread elevational distributions, occur at lower elevations, and harbor higher levels of genetic diversity than NMB populations. Despite the apparent coupling of demographic and climatic oscillations, our data rejected simultaneous population structuring due to historical habitat fragmentation. Demographic modeling indicated that the species had different modes of differentiation, and varied in the timing of divergence and the degree of gene flow across mountain blocks. Our results suggest that the heterogeneous distribution of genetic variation in birds of the Atlantic Forest sky islands is associated with the interplay between topography and climate of distinct mountains, leading to predictable patterns of genetic diversity. (AU)

FAPESP's process: 11/50143-7 - Comparative multilocus phylogeography of three species of Poospiza (Aves, Passeriformes): exploring the history of the montane Atlantic Forest
Grantee:Fábio Sarubbi Raposo do Amaral
Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants
FAPESP's process: 13/50297-0 - Dimensions US-BIOTA São Paulo: a multidisciplinary framework for biodiversity prediction in the Brazilian Atlantic forest hotspot
Grantee:Cristina Yumi Miyaki
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 11/23155-4 - Comparative multilocus phylogeography of three species of Poospiza (Aves, Passeriformes): exploring the history of the montane Atlantic Forest
Grantee:Fábio Sarubbi Raposo do Amaral
Support Opportunities: Scholarships in Brazil - BIOTA - Young Researchers
FAPESP's process: 17/25720-7 - Comparative phylogeography of montane bird species from southern Atlantic Forest: Integrating evolutionary and ecological traits in the study of community assemblage
Grantee:Gregory Thom e Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/17869-3 - Comparative phylogeography of montane bird species from southern Atlantic Forest: Integrating evolutionary and ecological traits in the study of community assemblage
Grantee:Gregory Thom e Silva
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 18/03428-5 - Dimensions US-BIOTA-Sao Paulo: traits as predictors of adaptive diversification along the Brazilian Dry Diagonal
Grantee:Vera Nisaka Solferini
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants