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Thirty-nine weevil species are listed from the Świętokrzyskie Mountains for the first time, raising the total number of Curculionoidea (except Scolytinae) known to occur in this region of Poland to 438. New records concern species from the families Anthribidae (1), Apionidae (4) and Curculionidae (34). Several species are commented upon, providing also a critical discussion on host associations of...
In Poland, the majority of silver fir stands is characterised by a single−layer stand structure. The current silvicultural activities aim at obtaining multilayer stands, which requires a clearer definition of the structure, and more precisely, a better knowledge of the pattern of diameters at breast height (DBH) distribution. The aim of the research was to develop a pattern of DBH distribution of...
The paper presents the dendrochronological analysis of silver firs (Abies alba Mill.) growing in the canopy layer of the forest stands. We searched for the similarities in the rhythm of radial growth of studied trees and we analysed the response of these stands to the increment disturbances related to the occurrence of adverse climatic factors and the pressure from industrial pollution. The research...
The study assesses the damage to silver fir from the canopy layer in the stands of the Świętokrzyskie Mountains (central Poland) using three methods. The suitability of these methods was also analysed by calculating the correlation between increment of the diameter at breast height (DBH) and the level of damage. In total we investigated 240 trees. The first analysed method involves tree defoliation...
Przedstawiono rozmieszczenie w Polsce chrząszcza z rodziny ryjkowcowatych - Acallocrates colonnellii Bahr, 2003 oraz omówiono znaczenie starych parków podworskich w zachowaniu różnorodności biologicznej.
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