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Full-Text Articles in Life Sciences
Examining Methodologies To Assess Abrasion In Tree Crowns, Tyler Matt Lynn Brannon
Examining Methodologies To Assess Abrasion In Tree Crowns, Tyler Matt Lynn Brannon
Masters Theses
New methodologies were explored to determine if crown abrasion affects shoot elongation of preformed and sustained growth form species during stand development. Bud growth form differences can influence which species’ buds are abraded or broken upon impact with adjoining crowns affecting crown growth. Analysis of branch elongation, apical bud toughness and tree sway were investigated in this study. Branch elongation was measured on crowns where growth was inhibited by crowns of adjacent trees and on crowns where growth is uninhibited. Bud mass was also measured. Bud toughness by species’ shoot growth form was evaluated using a pendulum impact tester for …
Interacting Effects Of Fire Activity, Climate, And Habitat Diversity On Forest Dynamics, El Malpais National Monument, New Mexico, Usa, Alex John Pilote
Interacting Effects Of Fire Activity, Climate, And Habitat Diversity On Forest Dynamics, El Malpais National Monument, New Mexico, Usa, Alex John Pilote
Masters Theses
The historic effects of fire and climate on stand dynamics in the ponderosa pine-dominated forests of the American Southwest are of increasing concern to land management agencies. Using present forest stand structure, the mixed-conifer forests of the volcanic features in El Malpais National Monument were analyzed at three separate sites: a cinder cone, an ancient basalt flow, and an isolated “island” (kipuka) completely surrounded by basalt flows. Increment cores were collected from 632 trees in 19 plots within the monument to obtain dates of establishment. These dates were compared with historic fire histories and precipitation records to analyze the effects …