Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Aspen Crown Dieback And Mortality On The Williams Ranger District, Kaibab National Forest, Arizona, Thomas J. Zegler
Aspen Crown Dieback And Mortality On The Williams Ranger District, Kaibab National Forest, Arizona, Thomas J. Zegler
Aspen Bibliography
Crown dieback and mortality of quaking or trembling aspen (Populus tremuloides) were extensive within pine-oak and mixed conifer forest types of the Williams Ranger District, Kaibab National Forest in northern Arizona. I collected data from 48 aspen sites to determine if predisposing site and stand factors and contributing damaging agents were associated with aspen crown dieback and mortality. Overstory aspen mortality averaged 50% by stems per hectare and 44% by basal area. Based upon univariate relationships, elevation was the most significant site factor related to both overstory aspen crown dieback (R2 = 0.15, P = 0.0069) and overstory aspen mortality …