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Revista Chapingo serie ciencias forestales y del ambiente
On-line version ISSN 2007-4018Print version ISSN 2007-3828
Abstract
CORTES-CABRERA, Héctor E. et al. Effect of fire and elevation on the regeneration of Pinus hartwegii Lindl. in northeastern Mexico. Rev. Chapingo ser. cienc. for. ambient [online]. 2018, vol.24, n.2, pp.197-205. ISSN 2007-4018. https://doi.org/10.5154/r.rchscfa.2017.09.057.
Introduction:
Fire regimes and climate change affect the regeneration of vegetation, composition and abundance of the species.
Objectives:
To compare P. hartwegii regeneration and the number of trees with fire scars at different elevations; and determine whether regeneration is related to the density of adult trees and to the density of pine trees with fire evidence.
Materials and methods:
P. hartwegii regeneration was studied at the altitudinal ranges 3 050, 3 225 and 3 400 m in the mountain El Potosí located in northeastern Mexico. Adult trees were sampled using the point-centered quarter method and saplings on square plots.
Results and discussion:
Density of adult pine trees and seedlings was higher at the low elevations (3 050 and 3 225 m). Density of pine trees with fire scars was similar (P > 0.05) at the three elevations. No correlation was detected between regeneration and number of pine trees with fire scars, but there was a positive correlation between density of seedlings and that of adult pines
Conclusion:
Altitude influences regeneration and density of P. hartwegii adult trees. Its regeneration is not related to fire evidence.
Keywords : density of pine trees; fire scars; altitudinal migration; El Potosí mountain.