Abstract

ORTEGA-CERVANTES, Miguel Ángel; CUAPIO-HERNANDEZ, Liliana; MONTERROSO-RIVAS, Alejandro Ismael  and  CORONA-AMBRIZ, Alejandro. Influence of climatic variation on the radial growth of Pinus montezumae in Iztaccíhuatl - Popocatépetl National Park. Rev. Mex. Biodiv. [online]. 2026, vol.97, e975644.  Epub Jan 14, 2026. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2026.97.5644.

Climate variability, intensified by climate change, influences tree growth patterns, affecting their development and response to extreme environmental conditions. This study aimed to identify patterns associated with climate change in the region. From this, radial growth chronologies were generated. Cross-dating was also used to verify the dates and generate chronologies. Reanalysis climate-radial growth response periods and calculate correlations between the chronologies and climate variables. The results showed a moderate to high dendrochronological potential for Pinus montezumae and indicated that the species responds to spring and summer precipitation, which favors annual radial growth. Maximum autumn temperatures contribute to the development of earlywood at the end of the growth cycle, while mean and minimum winter temperatures promote latewood formation. Additionally, the species was sensitive to drought events, as evidenced by reduced radial growth over the past decade. These findings highlight the importance of P. montezumae as an indicator of the impact of climate variability on regional forests.

Keywords : Growth rings; Tree ring; Conifer Forest; Dendrochronology; Climate response.

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