Abstract
The period between 2000 and 2002 repeated outbreaks of the web spinning sawfly Cephalcia lariciphila (Wachtl 1898) around the village of Větrný Jeníkov, Czech Republic. The impact of defoliation, caused by C. lariciphila feeding, on tree-ring formation of European larch (Larix decidua Mill.) was studied using dendrochronological methods. Heavy defoliation resulted in much less growth in the years of insect attack, the average incremental loss being 67% for the 2000–2002 period. Also, defoliation resulted in the formation of latewood with fewer cells and reduced cell-wall thickness.
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Acknowledgements
This research was supported by the grant No. 0002070201 of the Ministry of Agriculture of the Czech Republic. We thank to Roman Volf for assistance in the field and Prof. Karel Klinka (Canada), Dr. Tomasz Zielonka (Poland) and Dr. Jack Sutherland (Canada) for improving the manuscript and language revision.
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Vejpustková, M., Holuša, J. Impact of defoliation caused by the sawfly Cephalcia lariciphila (Hymenoptera: Pamphilidae) on radial growth of larch (Larix decidua Mill.). Eur J Forest Res 125, 391–396 (2006). https://doi.org/10.1007/s10342-006-0112-z
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DOI: https://doi.org/10.1007/s10342-006-0112-z