Regeneration Of Aspen By Suckering On Burned Sites In Western Wyoming

Numbers of suckers produced following burning of aspen stands varied greatly between areas but followed similar trends over a 6-year period: a relative abundance the first year, followed by an abrupt decline by the third year and a gradual decline thereafter. First-year sucker numbers that ranged from 34,000 to 147,000/ha suffered mortality between 54 and 93 percent by the sixth year. Only 40 percent of the variability between sites in number of suckers the second postburn year, and only 44 percent of the variability the sixth year, could be accounted for by season of burn and preburn site and stand charaderistics. Of the variability between sites in the sixth-year sucker numbers, 96 percent is accounted for by season of burn and number of year-old suckers present the second year following burning.

Excerpt from Regeneration of Aspen by Suckering on Burned Sites in Western Wyoming The resulting data were used to plot sucker num ber and height growth changes on the different areas for 6 years following burning or clearcutting and to develop predictive models. Season of burning and preburn and posthum parameters were used as independent variables and posthum number of suck ers as the dependent variable. The preburn inde pendent variables consisted of the number, age, height, and diameter of suckers before burning; elevation, incident solar radiation (frank and Lee and mean diameter of old trees. The posthum independent variables were the number of new suckers the first fall following burning and the number of year-old suckers the second growing sea son after burning. Dependent variables were the number of year-old suckers present the second fall following burning and the number of' old suckers present the sixth year following burning. Regres sion analyses were performed to determine the best fitting relationships that were also judged to be bio logically reasonable. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.