00000nam 2200000za 4500 9.858519 CaOODSP 20241203113643 cr ||||||||||| 180704t19811980abc o f000 0 eng d CaOODSP eng n-cn-mb n-cn-sn Fo29-2/11-1981E-PDF Weather and forest insect population trends [electronic resource] / [W.G.H. lves]. Edmonton : Northern Forest Research Centre, c1980. 4 p. Forest management note ; 11 Caption title. "December 1981." Digitized edition from print. Includes bibliographic references (p. 4). "A recently completed study of Forest Insect and Disease Survey (Canadian Forestry Service) data collected in Manitoba and Saskatchewan from 1945 to 1969 has shown that weather influences the population trends of 21 forest insect defoliators (Ives 1981). This note summarizes some results of interest to forest managers"--P. [1]. gccst Weather gccst Insects gccst Forests Ives, W. G. H. Canada. Environment Canada. Northern Forest Research Centre (Canada) Canadian Forestry Service. Canada. Natural Resources Canada. Canadian Forest Service. Forest management note ; 11 (CaOODSP)9.845990 PDF 167 KB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/Fo29-2/Fo29-2-11-1981-eng.pdf