PT - JOURNAL ARTICLE AU - Dery Rocray AU - et Associes TI - Problems Affecting Urban Trees in Quebec City AID - 10.48044/jauf.1983.041 DP - 1983 Jun 01 TA - Arboriculture & Urban Forestry (AUF) PG - 167--169 VI - 9 IP - 6 4099 - http://auf.isa-arbor.com/content/9/6/167.short 4100 - http://auf.isa-arbor.com/content/9/6/167.full AB - The study of approximately 5,000 trees growing in the Quebec City area permitted the identification of the major problems related to the urban environment. These trees include ornamentals, those they grow along streets, and those in urban parks and woods. The results show that abiotic diseases are far more important and cause much greater damage than biotic diseases.