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Title: Silvicultural methods of Lymantria dispar L. management: effects on Agrilus bilineatus (Weber) populations

Author: Muzika, Rose-Marie; Liebhold, Andrew; Gottschalk, Kurt.;

Date: 1997

Source: In: Gregoire, J.C.; Liebhold, A.M.; Stephens, F.M.; Day, K.R.; Salom, S.M., eds. Proceedings: Integrating cultural tactics into the management of bark beetle and reforestation pests; 1996 September 1-3; Vallombrosa, Italy. Gen. Tech. Rep. NE-236. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 9-14.

Publication Series: Paper (invited, offered, keynote)

Description: The abundance of twolined chestnut borer, Agrilus bilineatus (Weber), adults were sampled using sticky panels over a 6-year period in a mixed hardwood forest in West Virginia. Sixteen stands (average size 10.5 ha) were used in the study; eight of these were silviculturally thinned in 1989, the remainder were uncut. During 1990 and 1991, populations of gypsy moth, Lymantria dispar L., reached outbreak levels. Densities of A. bilineatus adults peaked in 1992, the year following the second defoliation year (1992), and were always greater in thinned than unthinned stands, however overstory mortality was greater in unthinned stands. Correlations between twolined chestnut borer abundance and tree mortality were not strong, nor were the relationships between defoliation and twolined chestnut borer.

Keywords: Agrilus bilineatus, silviculture, mortality, Quercus, defoliation

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Citation:


Muzika, Rose-Marie; Liebhold, Andrew; Gottschalk, Kurt. 1997. Silvicultural methods of Lymantria dispar L. management: effects on Agrilus bilineatus (Weber) populations. In: Gregoire, J.C.; Liebhold, A.M.; Stephens, F.M.; Day, K.R.; Salom, S.M., eds. Proceedings: Integrating cultural tactics into the management of bark beetle and reforestation pests; 1996 September 1-3; Vallombrosa, Italy. Gen. Tech. Rep. NE-236. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 9-14.

 


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