Natural Resources, School of


Document Type


Date of this Version

April 1981


Published in OIKOS (Copenhagen) 36:1 (1981), pp. 65-67. Issued by the Nordic Ecological Society. Copyright © 1981 OIKOS. Published by Blackwell Publishing. Used by permission.


The rate of attack on elm seedlings by the Elm Leaf Beetle is affected by the seedlings position relative to adult elms. Those seedlings directly under adult trees suffer 580 times the insect attack from the beetles as seedlings not directly under adult elms. Excluding seedlings under adult elms, the number of egg masses found on an elm plant is directly proportional to its size. It was found that below a certain size seedlings were completely free from beetle attack.