Abstract
SUMMARY In a previous study of the incidence of termites in living forest regrowth. it was found that termites can infest regrowth trees through a system of foraging soil galleries radiating out from colonies established in old-growth trees and stumps. Because of the implications of this finding to forest management, a survey has been conducted to determine the incidence of termites (Coptotermes acinaciformis (Frogg.)) in living blackbutt (Eucalyptus pilularis Sm.) regrowth in four forests in south-east Queensland. In a number of stands termites were absent from regrowth in spite of an apparently high potential infestation hazard, and in other stands the infestation was considered to be light. In only one stand was infestation regarded as serious, 33.5 per cent of trees in a planted forest being attacked. Hypotheses are developed to suggest that (a) regardless of the apparent hazard, infestation may be high if the trees in a stand are in poor physiological condition; and (b) the structure of some soils ma...
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