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The paper presents an evaluation of health condition of selected oak stands in the Włoszakowice Forest Division based on a synthetic tree damage index. Field work was conducted in 2007-2008. In order to perform this task seven experimental sites were established, with 25 trees from Kraft’s age classes I-III evaluated in each. It was found that the overall health condition of most stands deteriorated...
This paper presents a proposal for commercial measures aiming at protecting the Ergates faber (Linnaeus 1761). Ergates faber is a beetle species (Coleoptera) from the longhorn beetles’ family, Cerambycidae, and remained protected in Poland since 2001 following the Regulation of the Minister of the Environment of 26th September 2001 (Journal of Laws 2001, no. 130, item 1456), while it was never listed...
The aim of the study was to inventory potential habitats and localities of Eastern eggar Eriogaster catax (Linnaeus, 1758) on the route of expressway S5 Poznań-Wrocław at the Kaczkowo-Korzeńsko section. Insects from documented localities overlapping with the planned expressway were translocated to new locations, guaranteeing development and existence of this protected insect species.
W czasie inwentaryzacji przyrodniczo-leśnej z terenu Polski wykazano 1597 stanowisk czerwończyka nieparka oraz 111 stanowisk czerwończyka fioletka. Struktura siedlisk, po analizie zebranych materiałów, wskazuje na większe uzależnienie czerwończyka fioletka od wilgotności, w porównaniu z L. dispar, i na mniejsze ich zróżnicowanie. W pracy przedstawiono propozycje postępowania ochronnego mającego na...
The aim of the study was to determine whether extracts of tobacco leaves may reduce feeding of the large pine weevils on twigs of pine – Pinus sylvestris. The research was conducted in laboratory conditions. The research proved statistically significant decrease in damage size on the pine twigs as a result of application of each tested extract.
The influence of Fastac 100 EC, Marshal 250 CS and Nomolt 150 SC insecticides on the (L1) caterpillars of Siberian Silk Moth (Dendrolimus superans sibiricus) was investigated. Three different concentrations were prepared for each insecticide. It has been shown that all variants of the tested insecticides reduced the population of the larvae, whereby in case of Fastac 100 EC infusion, no statistically...
The purpose of the research was the comparison of capturing effectiveness of large pine weevils with different types of traps. The research was conducted in the forest of Oborniki forest division (RDLP Poznań). It has been shown that most large pine weevils are captured by the IBL4 type trap. The least effective trap turned out to be the trap log.
The aim of the study was to verify whether methanolic extracts prepared from plants of 26 selected species contained substances reducing feeding of Hylobius abietis beetles on shoots of Pinus sylvestris. Experiments were conduced under laboratory conditions. A statistically significant reduction in the size of damage was recorded on pine twigs treated with methanol extracts of leaves of Trifolium...
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