Introduction: Understanding the dendroclimatic potential of a species allows us to
reconstruct the climate variability in the latitudes and altitudes of its distribution.
Objective: To determine the potential of Pinus montezumae Lamb. to reconstruct
Materials and methods: A total of 80 samples were extracted with a Pressler
increment borer and dated, allowing growth rates to be generated. Average monthly
rainfall and minimum and maximum temperature were obtained, and a response
function analysis between growth rates and climate data was conducted.
Results and discussion: Dated samples represented 75 % of the total. The
COFECHA program indicated a correlation between series of r = 0.57 (P < 0.01) and
a mean sensitivity of 0.31; P. montezumae is sufficiently sensitive to record climate
variability. Three chronologies (standard, residual and arstan) covering 228 years
(1790-2017) were generated for each of the three growth rates (total ring, early and
latewood). The response function analysis showed that it is possible to reconstruct
the spring rainfall and the May-July maximum temperature based on the total ring (r =
0.66; P < 0.01) and latewood (r = 0.35; P < 0.01) indices, respectively.
Conclusion: Statistical parameters indicate that P. montezumae is an adequate
proxy source for climate variability reconstruction studies.