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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: The geography of evolutionary divergence in the highly endemic avifauna from the Sierra Madre del Sur, Mexico

Fig. 1

a Map of Mesoamerica showing the distribution of montane regions for which genetic data were analyzed in the present study, and summary of the main geographic groups in which they were divided; based on [37] and Natural Earth data (http://naturalearthdata.com). Highlighted in orange is the SMS region and main geographical breaks are shown with red lines. Evaluated barriers in this study are numbered as follows: 1) Balsas Depression, 2) Río Verde drainage, 3) Oaxaca’s Central Valley, 4) Isthmus of Tehuantepec, 5) Nicaragua Depression, and 6) Panama Channel Fault Zone (PCFZ). b Sierra Madre del Sur mountain range (SMS, ca. 56,729 km2) highlighted in orange, showing the broken topography and main mountain peaks. The red dot depicts Oaxaca’s Central Valley, whereas the red line depicts the Río Verde drainage

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