Entomology Commons^™

Patterns Of Tree Mortality During An Uncontrolled Spruce Budworm Outbreak In Baxter State Park, 1983, Akira Osawa, Charles J. Spies Iii, John B. Dimond

Technical Bulletins

A forest inventory of Baxter State Park, Maine, was done during the summer and fall of 1983 to study the patterns of mortality in balsam fir and in the red-black spruce complex during an uncontrolled spruce budworm outbreak. The volume of trees that died during the outbreak was estimated at 40% of the original quantity. Fir mortality was consistently greater than that of spruce. The percentage mortality of spruce was always greater in the higher elevation zone than in the lower elevation zone. Percentage mortality of fir and spruce showed inconsistent patterns in relation to the proportion of hardwood species …