Resumen

GUERRERO-MARMOLEJO, Altagracia; PEREZ-SALICRUP, Diego R.; MARTINEZ-RAMOS, Miguel  y  RAMIREZ, M. Isabel. Altitudinal distribution, diversity, and conservation of pines and oaks in the Monarch Butterfly Biosphere Reserve, Mexico. Rev. Mex. Biodiv. [online]. 2025, vol.96, e965345.  Epub 11-Nov-2025. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2025.96.5345.

Pinus and Quercus species face anthropogenic disturbances that affect their structure and distribution. Understanding the distribution patterns of these species is crucial for establishing appropriate management practices to conserve their diversity and the ecosystem services they provide. The aim of this study was to analyze pine and oak species’ distribution, dominance, and diversity patterns along an altitudinal gradient in the Monarch Butterfly Biosphere Reserve. We established 6 elevation transects (2,250 - 3,300 m asl) with 32 points every 150 m. At each site, 25 pine and oak trees located between 0 and 60 m from a central coordinate, with a diameter at breast height ≥ 10 cm, were recorded. Distribution patterns, dominance, and alpha and beta diversity were analyzed. The least abundant species were the most geographically restricted. Pinus pseudostrobus and Quercus laurina were the most dominant species. Alpha diversity was not associated with elevation, nor did it show a defined distribution pattern. Beta diversity was associated with elevation at the highest and lowest elevations, forming an inverted hump. These patterns may be the result of human activities, such as logging and agriculture, which have altered natural patterns of diversity and distribution.

Palabras llave : Distribution; Dominance; Forest management strategies; Tropical montane forests.

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