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  • Author: Jolanta Bąk-Badowska x
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Jolanta Bąk-Badowska

Abstract

The aim of the study, carried out from April to October in 2004 and 2005, was to characterise bee (Apiformes) assemblages in the phytosociologically diversified forest communities of the Suchedniów-Oblęgorek Landscape Park. Moericke colour traps were used to capture the bees. The five study sites yielded 76 bee species. There was a predominance of representatives from the families Apidae (28 species, 900 individuals) and Andrenidae (20 species, 222 individuals). The indices of species diversity (H’) and evenness (J’) reached their highest values in a mixed coniferous forest (BM) site, and reached their lowest values in a fi r forest (BJ) site. Qualitative and quantitative similarity of assemblage structure was highest in assemblages in mixed coniferous forest, mesic coniferous forest, and oak-hornbeam forest habitats, decreasing in floristically poor habitats not favourable to nesting, i.e. fi r forest and riparian forest. Traps placed on the forest floor in ground cover contained more individuals and species of bees, with 1192 individuals (88.8%) and 76 species, than in the canopy layer, with 150 individuals (11.2%) and 23 species. This trend was consistent across all the habitats in the Landscape Park.

Open access

Jolanta Bąk-Badowska, Ilona Żeber-Dzikowska and Jarosław Chmielewski

Abstract

In the period of 2012-2013, a research was conducted to investigate the insects damaging the seeds of field elm (Ulmus minor Mill.). The aim of the research was to specify the damages to field elm seeds caused mainly by the brick (Agrochola circellaris) and to indicate the possible dependence between the number of damaged seeds by the caterpillars of this moth and stand density. The research was conducted in the areas of Cisów-Orłowiny Landscape Park (C-OLP) and Nida Landscape Park (NLP) in the Świętokrzyskie Province. In both parks, there were two test stands situated, each of which covered the material collected from the trees. The number of field elms ranged from four to six. Furthermore, a sample of 300 seeds were randomly collected from each tree. The elms in Cisów-Orłowiny Landscape Park were observed in full density stands (fully stocked stands); however, these trees in Nida Landscape Park were growing in loose density stands (under-stocked stands). In total, there were 12,000 seeds collected from 20 trees. The analysis of the collected research material demonstrated that 436 seeds from the field elms (Ulmus minor) were damaged by the brick (Agrochola circellaris). It constituted 3.6% of the total number of collected samples (Table 1). In the seed samples collected from the test stands in Cisów-Orłowiny Landscape Park, the damages caused by the caterpillars of the brick moth ranged between 0.8% and 2.9%. In the case of seed samples collected from Nida Landscape Park, the damages caused by the caterpillars of the brick moth were greater and ranged between 4.1% and 6.5%. The percentage of undamaged seeds ranged between 94.4% in Cisów-Orłowiny Landscape Park and 84.7% in Nida Landscape Park, which constituted, on an average, 89.5% for both parks. The 6.8% of the seeds were also damaged by other insects. The results of the research showed the dependence between the number of field elm seeds damaged by the brick Agrochola circellaris and the stand density (Table 2). The seeds collected from trees growing in the Nida Landscape Park in loose density stands (under-stocked stands) were twice as frequently damaged than those collected from the trees growing in Cisów-Orłowiny Landscape Park in full density stands. Also, the damages caused by other insects were greater among the seeds collected from trees growing in loose density stands than in full density stands (Table 1).

Open access

Jolanta Bąk-Badowska, Ilona Żeber-Dzikowska and Jarosław Chmielewski

Abstract

The aim of the study was to demonstrate the degree of healthiness of the pedunculate oak (Quercus robur) acorns found in the Włoszczowa-Jędrzejów Nature Park (abbreviation: W-JOChK) and in the neighbouring area. It was dealt with by making the analysis of health of the acorns (total 3,600). The research material included the samples of fallen down acorns, collected under the pedunculate oaks in Kurzelów (W-JOChK), as well as Żelisławice. The study was conducted from late September 2014 to early October 2015.

The analysis of acorns demonstrated that over 50% of the acorns were damaged by insects. The ‘perpetrators’ of the damage proved to be Curculio glandium (Coleoptera: Curculionidae - acorn weevil) and Cydia splendana (Lepidoptera: Tortricidae - chestnut tortrix). It was stated that acorns from the pedunculate oak trees, which were found on the protected area, were twice less frequently inhabited by Curculio glandium than those originating from the trees in Żelisławice - near the industrial firm. The damages caused by Cydia splendana in both study sites were similar in number. The results indicate that the acorns of oaks in more polluted environment are probably more vulnerable to infestation by insects.