early stages of plant succession following logging and burning in the western cascades of oregon c t dyrness forestry sciences laboratory pacific northwest forest and range experiment stution forest service ...
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...Early stages of plant succession following logging and burning in the western cascades oregon c t dyrness forestry sciences laboratory pacific northwest forest range experiment stution service u s department agriculture corvallis abstract vegetative changes were documented for years on permanent milacre plots located three clearcut logged units cascade mountains cover composition observed year prior to old growth pseudotsuga menziesii after but before during each five growing seasons broadcast slash total was first second fifth respectively invading herbaceous species dominated from through fourth by residual regained dominance differences disturbance strongly influenced successional trends undisturbed soil areas such as acer circinatum oxalis oregana gaul theira shallon disturbed unburned supported a wide variety both invader light severely burned sites largely occupied invaders ceanothus velutinus epilobium angustifolium e paniculatum although often obscured varying degrees relations...