Digest: Population-level processes that facilitate divergence differ between Andean and Amazonian birds

Key Points

• This research aims to understand how landscape differences affect genetic divergence in birds from the Andes and Amazon.
• Analyzed genomic data from eight Tangara bird species
• Compared genetic structure and gene flow between Andean and Amazonian populations
• Assessed genetic diversity in both landscapes
• Andean populations exhibit strong genetic structure with lower gene flow
• Amazonian populations show weak genetic structure with higher gene flow and diversity
• Divergence is facilitated more effectively in the Andes due to significant geoclimatic barriers

Abstract