References
- Alma , P. J. 1973 . N.Z. For. Serv , 57 Ann. Rep. For. Res. Inst . 1972
- Blais , J. R. 1958 . Effects of defoliation by spruce budworm (Choristoneura fumijerana Clem.) on radial growth at breast height of balsam fir (Abies balsamea (L.) Mill.) and white spruce (Picea glauca (Moench) Voss.) . For. Chron. , 34 : 39 – 47 .
- Dixon , A. F. G. 1971 . The role of aphid's in wood formation. I. The effects of the sycamore aphid, Drepanosiphum plantanoides (Schr.) (Aphididae), on the growth of sycamore, Acer pscudoplatanus (L.) . J. Appl. Ecol. , 8 : 165 – 180 .
- Funke , W. 1971 . “ Food and energy turnover of leaf-eating insects and their influence on primary production ” . In Integrated Experimental Ecology. Methods and results of ecosystem research in the German Soiling Project , Edited by: Ellenberg , H. London : Chapman and Hall Ltd .
- Knight , F. B. 1967 . Evaluation of forest insect infestations . Ann. Rev. Ent. , 12 : 206 – 228 .
- Kozlowski , T. T. 1969 . Tree physiology and forest pests . J. For. , 67 : 118 – 123 . Ent. 16: 289-324
- Kulman , H. 1971 . Effects of insect defoliation on growth and mortality of trees . Ann. Rev. Ent. , 16 : 289 – 324 .
- Morris , R. F. 1955 . The development of sampling techniques for forest insect defoliators, with particular reference to the spruce budworm . Can. J. Zool. , 33 : 225 – 294 .
- Rafes , P. M. 1971 . “ Estimation of the effects of phytophagous insects on forest production ” . In Analysis of temperate forest ecosystems , Edited by: Reichle , D. E. London : Chapman and Hall Ltd .