Volume 9
Issue 2
Forestry
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume9/issue2/abs-13.html
SHOOT DAMAGE AND RADIAL INCREMENT OF TREES IN SCOTS PINE (PINUS SYLVESTRIS) STANDS AFFECTED BY A ONE-YEAR’S OUTBREAK OF PINE SHOOT BEETLES TOMICUS PINIPERDA AND T. MINOR (COL., SCOLYTIDAE) IN SOUTHERN POLAND
Andrzej Borkowski
Department of Ecology and Environment Protection,
Institute of Biology, Jan Kochanowski University of Kielce, Poland
ABSTRACT
The level of shoot damage and the annual radial increment were estimated in Scots pine stands affected by a severe maturation feeding of pine shoot beetles Tomicus piniperda (L.) and T. minor (Hart.). Studies were conducted on sample plots situated about 60 and 500 m from sawmill timber storage sites during 2001-2005. In both investigated stands the radial increment in 2003 was smaller than that in 2002. There was no significant difference between the damaged stand and the control stand in respect of its relative value. The relative value of radial increment during the period 2003—2005 showed that a severe maturation feeding of pine shoot beetles had no effect on weakening of increment dynamics of trees in the edge part of the stand.
Key words: Pinus sylvestris, Tomicus piniperda, T. minor, shoot damage, growth.
Andrzej Borkowski
Department of Ecology and Environment Protection,
Institute of Biology, Jan Kochanowski University of Kielce, Poland
15 ¦więtokrzyska, 25-406 Kielce, Poland
phone (0-41) 349 63 19
email: andrzej.borkowski@ujk.edu.pl
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