Unraveling Biogeographic Boundaries Within the Sierra Madre Oriental, Mexico: An Endemicity Analysis Using a Taxonomically Diverse Dataset.

ABSTRACT: The Sierra Madre Oriental (SMO) is a significant mountain range and one of Mexico's 14 biogeographical provinces. Its delimitation has been debated. This study aims to analyze the distribution of plants, beetles, odonates, amphibians, reptiles, and mammals using an endemicity analysis to identify endemism areas and confirm the SMO's biogeographical units. Georeferenced data for 326 species distributed in the Sierra Madre Oriental were compiled using QGIS software, and an endemicity analysis (EA) was carried out with NDM-VNDM to evaluate taxon distribution congruence in predefined grids. Different grid sizes and specific parameters were used to identify areas of endemism, with an Endemicity Index (EI) assigned to measure the consistency of these areas. Six main areas of endemism (EA) were i

SUBMITTER: Goyenechea Mayer-Goyenechea I 

PROVIDER: S-EPMC11739711 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature