Wave effect and shyness phenomenon in homogeneous forests of Alnus acuminata

The wave effect and the shyness phenomenon in Alnus acuminata (Kunth) are crown parameters rarely studied, but important quality of wood standing trees, therefore, a morphometric modeling crowns homogeneous forests Sierra Norte de Puebla was carried out. In 20 rectangular sites 1,000 m2, following were evaluated: total height (TA), normal diameter (ND), (CD) cover (CC). Kruskal Wallis test applied to data that did not meet assumption normality; for those did, analysis variance (ANOVA) used, with Tukey mean comparison tests (α ≤ 0.05). forest value index 14.99, so its two-dimensional structure is based on DN, AT CC. Its average slenderness 93.52, which makes tree very stable mechanical damage. life-space 38.92, high indicating trees low intraspecific competition developed better. At canopy level, pattern an upward, oscillatory constant observed groups 10 trees. showed crack opening 27.39 cm between canopies, this well defined species. It concluded acuminata, as consequence inequality acquisition resources, one way minimize through botanical shyness.