Spatial distribution of fallen shoots of Scots pine pruned by pine shoot beetles (<Emphasis Type="Italic">Tomicus</Emphasis> spp.), and evaluation of methods of shoot collection in central Poland |
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Authors: | Andrzej Borkowski |
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Institution: | (1) Department of Ecology and Environment Protection, Institute of Biology, Pedagogical University, ul. Świętokrzyska 15, 25-406 Kielce, Poland |
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Abstract: | Methods of spatial distribution of fallen shoots, pruned by pine shoot beetles, and estimation of efficiency of methods based
on collection of fallen shoots and used in forecasting of the occurrence of these insects, are presented in this paper. The
fallen shoots were distributed in clusters. The distribution was statistically different from random. Relative errors in estimation
of shoot-fall density were the smallest in study transects. Early and late autumn and the following spring, after the snow
melt, are the optimum seasons for collecting fallen shoots. |
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Keywords: | Pinus sylvestris Shoot damage Tomicus piniperda T minor |
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