Outbreaks of Insect Herbivores on Plants Along Motorways in the United Kingdom

摘要: Recent outbreaks of defoliating insects on trees and shrubs used for landscaping major roads in the U.K. are reported. The reasons some were investigated with special reference to effects roadside environment. An outbreak Phalera bucephala Fagus sylvatia was examined each year between 1975 1979 one Euproctis similis Crataegus monogyna from 1975-1978. nitrogen content vegetation near a heavily motorway greatly enhanced, probably by oxides emitted vehicle exhausts. increased plants increases insect populations. could not be explained relaxation predation.