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Physical and Environmental Geography Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Physical and Environmental Geography
Changes In The Forest Composition In The Great Lakes St. Lawrence Forest Region Of Ontario And The Resultant Outbreaks Of The Spruce Budworm Choristoneura Fumiferana (Clem.), John F. Bowen
Theses and Dissertations (Comprehensive)
The spruce budworm Choristoneura fumiferana Clem. is the foremost forest pest in Canada. The species is endemic to eastern North America. Since the turn of the century the insect has become a major problem in the “Great Lakes St. Lawrence Forest Region” of Ontario, an area where prior to recent times the insect did not occur in damaging numbers.
Analysis of the life cycle of the insect reveals that the only limiting factor capable of controlling outbreaks is a lack of food. The required tree species is balsam fir Abies balsama (L.) Mill. The forests of Ontario have been altered …
Development And Application Of Pleistocene Sea Level Curve To The Coastal Plain Of Southeastern Virginia, Linda R. Zellmer
Development And Application Of Pleistocene Sea Level Curve To The Coastal Plain Of Southeastern Virginia, Linda R. Zellmer
Dissertations, Theses, and Masters Projects
No abstract provided.
Historical Evolution Of Coastal Sand Dunes On Currituck Spit, Virginia/North Carolina, Harold F. Hennigar
Historical Evolution Of Coastal Sand Dunes On Currituck Spit, Virginia/North Carolina, Harold F. Hennigar
Dissertations, Theses, and Masters Projects
No abstract provided.