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Long‐Term Effects of Defoliation of Aspen by the Forest Tent Caterpillar
Author(s) -
Churchill G. B.,
John H. H.,
Duncan D. P.,
Hodson A. C.
Publication year - 1964
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1936115
Subject(s) - caterpillar , biology , ecology , larva
A second study of the effect of aspen of defoliation by the forest tent caterpillar in Minnesota was conducted 6 years after the conclusion of an initial comprehensive investigation. Results indicate increasing mortality in other than suppressed trees with increasing defoliation intensity. Hypoxylon, Nectria, and insect incidence increased with defoliation intensity. Growth is significantly reduced 1 year beyond the cessation of defoliation in stands where three successive heavy defoliations have occurred. Growth of the dominants increases significantly, however, the third year after defoliation in such stands.