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Abstract
Woody plant resistance to insect damage is of great importance in forest protection, and tree tolerance is an important element of this resistance. The compensating mechanisms responsible for tolerance are nonspecific as a rule and develop after damage has been caused by phytophagous animals or other unfavorable effects. Beyond that, plant tolerance depends on duration, repetition, and phenological periods of the damage effects, and on environmental conditions. We have studied of radial increment patterns in trees as a measure of their physiological state. This approach may be tested in areas infested by various dendrophagous species and is especially useful if the outbreak areas are vast, similar dynamics prevail in different forest site conditions, and the damage inflicted generally does not cause tree mortality. In these respects, the areas infested by
Zeiraphera griseana Hbn.,
Dasychira abietis Schiff.,
Pygaera anastomosis L., and
Leucoma salicis L. represent potentially significant conditions for estimation of the defoliation tolerance of larch, pine, and aspen trees, respectively, in Eastern Siberia.
Parent Publication
Citation
Pleshanov, Andrey A.; Voronin, Victor I.; Khlimankova, Elena S.; Epova, Valentina I. 1991. Tolerance to insect defoliation: biocenotic aspects. In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 211-212.
