Ignacy Korczyński

Ignacy Korczyński
Poznań University of Life Sciences · Department of Forest Entomology

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15
Publications
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30
Citations

Publications

Publications (15)
Article
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The aim of this study was to determine the effect of long-term flood water stagnation on the volume and degree of insect damage to leaves in oak stands. Analyses were conducted in the Wołów Forest District in 18 stands, including nine with stagnant waters and nine with no flood water stagnation. In order to determine the degree of leaf damage in...
Article
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The goal of the study was to determine the mortality of pupae of Panolis flammea and Hyloicus pinastri caused by Micromammalia in pine tree stands and in deciduous tree and bush patches present in such tree stands. The pupae of P. flammea and H. pinastri were put in the forest plant litter. The observations were conducted in the period between 6th...
Article
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This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean...
Article
Abstract The peptides proctolin, crustacean cardioactive peptide (CCAP) and FMRFamide, which are known to modulate insect muscle contractions, were assayed for their action on oviduct contractions in Hylobius abietis. A video microscopy technique and computer-based method of data acquisition and analysis were used to investigate the effects of thes...
Article
In this paper we report on the herbivore-affected C and N concentrations in the throughfall and altered canopy to soil transfer during a Pine Lappet (Dendrolimus pini L) mass infestation in 60-year-old Scots Pine (Pinus sylvestris L) forests. Our investigations covered a period of 7 months and could show, that herbivore defoliation significantly al...
Article
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The aim of the study was to verify whether oil extracts prepared from plants of 22 selected species contained substances reducing feeding of Hylobius abietis beetles in shoots of Pinus sylvestris. Experiments were conduced under laboratory conditions. A sta-tistically significant reduction was shown for the size of damage on pine twigs treated with...
Article
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The aim of the study was to determine the motor response of large pin weevil beetles to the smell of methanol extracts prepared from leaves of plants belonging to 23 selected species. Responses were analysed under laboratory conditions using olfactome-ters. Large pine weevil beetles were shown to respond to the aroma of two extracts. Methanol extra...
Article
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The aim of the study was to investigate the dependency between size reduction rate of thin pine stem fragments and population size of young Pityogenes bidentatus bee-tles, which developed on this material. Experimental plots were established in seven Pinus sylvestris stands. Thin stem tops were left on the ground after thinning. Some of them were c...
Article
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Investigations were conducted in central western Poland, in Scots pine stands aged 25-36 years. The population size of Hylobius abietis larvae was determined on stumps left after felled pine trees in eight stands. It was found that on stumps located in strip roads the number of weevil larvae was significantly higher than on stumps found outside tho...
Article
Full-text available
The aim of the study was to verify whether oil extracts prepared from plants of 22 selected species contained substances reducing feeding of Hylobius abietis beetles in shoots of Pinus sylvestris. Experiments were conduced under laboratory conditions. A statistically significant reduction was shown for the size of damage on pine twigs treated with...
Article
Full-text available
The aim of the study was to determine the dependency between the age of stand and species abundance of insects inhabiting parts of felled trees, such as stems and branches with diameters smaller than 7 cm. Investigations were conducted in central-western Poland, in pine stands aged 6-60 years. It was shown that the age of felled trees has an effect...
Article
The study compares the catchability of soil Barberys traps depending on the manner of setting them in pine forest conditions (Leucobryo - Pinetum and Peucedano - Pinetum). The first kind of traps were placed with their top edge on the level of the forest floor litter or the layer of moss. In the other case litter and plants were removed from a smal...
Article
Full-text available
Epidemics of forest insects can have deep impacts on ecosystem functioning and dynamics, with consequences for forest economics and forest carbon feedback to climate change. Despite the many roles that insects fulfil in terrestrial ecosystems, their importance in nutrient cycling is not well known (Kosola et al., 2001). The only instances where her...

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