o:10154 The results of 20 years of forest condition monitoring as a milestone for future improvement and harmonization en Abstract Forest condition monitoring under the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) is one of the world's largest biomonitoring networks. In this paper, we present the results of 20 years of forest condition monitoring in Serbia. As methodological background, we use Manual for visual assessment of crown condition and damaging agents. Assessment was performed on 130 sample plots Level I in 16 x 16 km grid and 4 x 4 km. Results present crown defoliation and tree damage from biotic and abiotic agents. Defoliation is analyzed and compared by tree species, age classes, elevation, and forest management practice. Influence on forest conditions was tested relative to (extreme) meteorological parameters. Detail analysis of biotic and abiotic damages was presented. The results have provided a chronological analysis of the crown condition and determination of main stressors. forest vitality, defoliation, ICP Forests, biotic/abiotic agents, stressors 1552102 https://icas.ro/90boa.html 2026-08-23T14:14:45.851Z 44 yes 46 Zoran Poduška 0000-0003-0593-0103 Snežana Stajić person 0000-0001-9023-3542 Branka Pavlović person 0000-0002-7507-2231 Vlado Čokeša person 0000-0003-1940-2598 application/pdf 676706 https://unilib.phaidrabg.rs/o:10154 no yes 1 70 92000001 Book of abstracts International scientific conference: „Forest science for people and societal challenges“ - The 90th„Marin Drăcea“ INCDS Anniversary, 2nd - 5th of October 2023, Bucharest. 30 2023