Wyniki wyszukiwania - AGRO

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Forest habitats use by wild boar in the Zielonka Game Investigation Centre

100%

Labudzki L., Gorecki G., Skubis J., Wlazelko M.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2009

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tom 08

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nr 4

The research was aimed at establishing the degree to which wild boar used different parts of habitats in a large forest complex. In the Zielonka Game Investigation Centre, wild boar most actively rooted from October to March, in fresh mixed broadleaved forest and fresh broadleaved forest, in stands aged over 41 years.

2

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Current data about the reservoir for Borrelia burgdorferi S.L. in the district of Mazury Lakes, Poland

86%

Sinski E., Pawelczyk A., Karbowiak G.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

3

Biting midges [Diptera: Ceratopogonidae] from forest habitats in Norway

86%

Hagan D. V., Hassold E., Kynde B., Szadziewski R., Thunes K. H., Skartveit J., Grogan W. L.

Polskie Pismo Entomologiczne

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2000

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tom 69

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nr 4

4

Factors influencing the distribution of the bank vole in forest habitats

86%

Mazurkiewicz M.

Acta Theriologica

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1994

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tom 39

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nr 2

In mosaics of forest environment the bank vole Clethrionomys glareolus {Schreber, 1780) prefers patches with dense vegetal cover like understorey or tail herbaceous plants, like ferns or sedges. The size and intensity of the space use, the rate of colonization of free space with population increases and mean home range size are highest in habitats, or their parts, covered uniformly by this type of vegetation. Habitats with dense and uniform understorey characteristically support high vole densities, high numbers of sexually active individuals, high survival rates of individuals entering the population at the beginning of the reproductive season, a high emigration during the second half of the season and a low immigration. Voie populations in habitats of poor and clumped understorey are characterized by low densities, high immigration of individuals entering to the population during the second half of the season and a high turnover of individuals. It has been suggested that vole distribution in a mosaic of forest habitats depends upon the abundance of structural elements of the habitat that may serve as defensive structures against predators.

5

Small mammals in the diet of the Tawny Owl [Strix aluco L.] in Central European Lowland

72%

Zmihorski M., Balciauskiene L., Romanowski J.

Polish Journal of Ecology

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2008

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tom 56

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nr 4

693-700

We analysed the variation of small mammal species composition in the Tawny Owl Strix aluco L. diet in forest habitats of Central European Lowland. We used published and unpublished materials from forest-dominated landscapes in Lithuania (n = 7 locations), Poland (n = 8) and East Germany (n = 1); marginal localities were ca. 870 km from each other. We recorded that in Central European Lowland the proportion of Arvicolidae in the Tawny Owl diet significantly increased, while that of Muridae decreased toward north-east. The proportion of less common rodent species (including Gliridae and Sicita betulina Pallas) in the diet also increased significantly toward NE. We did not record any trend of small mammals diversity along the analysed transect. We suggest that the change of Arvicolidae to Muridae ratio toward north-east can be caused by the replacement of mice with boreal vole species in small mammal community. Small mammal diversity in Central Europe is subject of discussion.

6

Selection of browse twigs by moose

72%

Dzieciolowski R.

Acta Theriologica

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1974

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tom 19

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nr 14-25

7

The evaluation of manganese, zinc and copper content in the soils of chosen forest habitats in the area of the Jezierzyca River Valley Landscape Park

72%

Kawalko D.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2009

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tom 541

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nr 1

The aim of the study was to analyze the total content of micronutrients in the soils in some habitats in the area of the Jezierzyca River Valley Landscape Park. Experimental sites were chosen with regard to different habitats (humid mixed coniferous forest, fresh mixed coniferous forest, humid mixed forest, fresh mixed forest). There are arenosoils, rusty and podzol soils and gley soils. The soils were developed from the river alluvial sands and fluvial sands and prove the acidic reaction. Results showed that the total content of Mn, Zn and Cu is highest in the organic levels and decreases with the depth in the analyzed soils. Only in the podzols soils the total content of Mn decreases in the eluvial horizon and increases in the iluvial horizon. The conducted investigations indicate no pollution of the soils with the micronutrients. The exception was a higher content of Cu in the superficial level of soils in humid and fresh mixed coniferous forest.

8

Badania nad roznicowaniem typow siedliskowych lasu na glebach piaszczystych

72%

Rutkowski P.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2002

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tom 01

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nr 1

73-85

9

Ground nesting in recultivated forest habitats - a study with artificial nests

72%

Purger J. J., Meszaros L. A., Purger D.

Acta Ornithologica

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2004

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tom 39

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nr 2

The study was carried out in the outskirts of the town of Pécs (southern Hungary) in a recultivated former coal mine. Bordered by Turkey Oak forests, this open area forms a wedge-shaped clearing in that woodland. Since trees and taller shrubs are rare in the area, it is mainly ground nesting bird species that occur in the clearing. In order to discover whether it is more advantageous to nest in the recultivated area (clearing) than in the nearby forest or at its edges, 150 artificial ground nests were constructed. On 7 May 2002, one quail egg and a plasticine egg of similar size were placed in each of the artificial nests. After a week it was found that 24% of nests in the clearing, 30% of those in the forest edge, and 44% of the ones inside the forest had suffered depredation. The proportions of damaged plasticine and quail eggs inside the forest and at the forest edge were similar, whereas the quail eggs in the clearings were significantly less damaged than plasticine eggs. Of all the experimental eggs, significantly more plasticine eggs (29%) were damaged than quail eggs (17%), which suggests that small-bodied predators are unable to break the quail eggs. 18% of the plasticine eggs attacked, and 72% of the quail eggs attacked were removed from the nest by the predator. Among the predators, small mammals were dominant in the clearing and inside the forest, and birds at the forest edge. Based on the predation of quail eggs, the survival chances of ground nests in the clearing are greater than at the forest edge or inside the forest.

10

Urban and forest-living blackbirds Turdus merula as hosts of Borreliella spp. infected ticks

72%

Gryczynska A.

Polish Journal of Ecology

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2018

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tom 66

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nr 3

The effect of urbanisation on parasite prevalence, especially these associated with human diseases, such as Lyme borreliosis, is of high interest. The blackbird Turdus merula is a ground-feeding species particularly predisposed to constitute a Borreliella spp. (Lyme borreliosis causative agent) reservoir. So, the aim of the study was to examine if the tick infestation level and their Borreliella spp. infection prevalence differs in blackbirds resident in two disparate habitats in Poland – one highly urbanized (in Warsaw agglomeration) and the other forested (in Mazurian Lake region). The infection in ticks feeding on blackbirds was ascertained based on detection of bacterium DNA (PCR). The prevalence of tick infestation in urban and forest-living blackbirds was similar (90 and 91.7%, respectively) but the mean number of parasites per bird was markedly greater in the forest (4.0 ind.) than in the urban populations (1.5 ind.). Even though, the Borreliella spp. infection of the ticks was significantly greater in the urban (46.7%) than in forest habitat (35.4%). Additionally, in the urban site more birds carry at least one infected tick than in the forest. The results of the study seem to confirm the role of blackbirds in establishing Borreliella spp. reservoir. Special regard should be given to highly urbanized areas, where the relative increase in the relevance of birds as tick hosts and pathogen transmitters may pose high risk to public health. Thus, the study constitutes a small-scale but an important contribution to our understanding of the role of birds in maintenance of Borreliella spp. foci in urban habitats.

11

Post-fire succession on abandoned fields in coniferous forest habitat [Nord-East Poland]

72%

Kwiatkowska-Falinska A. J.

Acta Societatis Botanicorum Poloniae

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2008

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tom 77

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nr 3

245-254

In July, 1992, fire swept through the Jelonka Reserve (52o35'33"N; 23o22'10"E). Litter, herbs layer and juniper shrubs were razed and the tree trunks of Pinus sylvestris and Populus tremula damaged, which resulted in their death the following year. Five research plots of 25 m2 each were established in the post-fire area. The species present there and their degrees of coverage were listed on the Londo scale between 1993 and 2002. The calculation of average degrees of coverage for individual populations allowed for the establishing of a chronological pattern of post-fire succession. The following findings have been made: 1) the primary function in colonization belongs to species of guerilla strategy of growth whose dormant buds survived fire underground (Holcus mollis, Calluna vulgaris and Populus tremula) or phalanx strategy of growth (Corynephoms canescens); 2) the dominants of the initial succession stage are perennial grasses, not therophytes; 3) the spatial pattern of succession is influenced by the occurrence of H. mollis or C. canescens in a particular location; 4) the initial stage terminates with the occurrence and further growth of C. vulgaris clumps; the post-fire succession in the Jelonka Reserve attained a brushwood stage faster in comparison to secondary succession, formerly triggered by the cessation of cultivation on arable land.

12

Ancient forest species in tree stands of different age as indicators of the continuity of forest habitat

72%

Sikorska D., Sikorski P., Wierzba M.

Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture

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2008

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tom 29

13

Lichens and lichenicolous fungi in the Bolimow Landscape Park

72%

Czyzewska K.

Monographiae Botanicae

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2003

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tom 92

14

Trends in biodiversity research over two decades: paradigmatic finders keepers?

72%

France R. L.

Biodiversity: Research and Conservation

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2011

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tom 21

15

Occurrence of Ixodes ricinus in different types of forest habitats of the city of Poznan and their infection rate with Borrelia burgdorferi sensu lato

72%

Michalik J., Rejmenciak A.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

16

Sensitivity of Tilia cordata seeds to dehydration and temperature of liquid nitrogen

72%

Chmielarz P.

Dendrobiology

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2002

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tom 47 Supplement

The aim of the study was to assess the susceptibility of small-leaved lime (Tilia cordata Mill.) seeds to drying and freezing in liquid nitrogen (-196°C). Seed samples were frozen in liquid nitrogen for 24 h at 11 different levels of seed moisture content (m.c.), ranging from 3.1% to 22.8% (fresh weight basis). All samples, including unfrozen control samples, were subjected to scarification with concentrated sulphuric acid (Tylkowski 1998) either before or after freezing. Seed pre-treatment before germination (at 3~15°C/16~8h) involved cold stratification at 3°C without substrate. Seed drying to 3.1% m.c. significantly reduced their germinability (to 63%), as compared to the high germinability (82-88%) of seeds with 5.2-20.9% m.c. Thus seeds of this species can be assigned to the ‘suborthodox' category. Such a high germinability (79-87%) was preserved after freezing in liquid nitrogen in samples dried to 9.0-17.4% m.c. if scarification was performed before freezing, and in samples dried to 9.1-16.2% m.c. if scarification was performed after freezing. The highest percentage of seedlings emerged after freezing in liquid nitrogen from seeds dried to 11.1-20.1% m.c. (emergence 65-75%) if scarification was performed before freezing, and from seeds dried to 7.3-17.8% m.c. (emergence 53%-71%) if scarification was performed after freezing.

17

Abundance, biomass and density boundaries in the Hymenoptera: analysis of the abundance - weight relationship and differences between forest and open landscape habitats

72%

Ulrich W.

Polish Journal of Ecology

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1999

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tom 47

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nr 1

18

Vegetation succession of forested and unforested habitats on coastal dunes of the Swina gate barrier

72%

Labuz T. A.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2004

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tom 69

19

Dispersion of the bank vole in fine- and coarse-grained mosaics of deciduous and mixed coniferous forests

72%

Chetnicki W., Mazurkiewicz M.

Acta Theriologica

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1994

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tom 39

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nr 2

Density and distribution of the bank vole Clethrionomys gtareolus (Schreber, 1780) was studied in 1986-1989 on two forest plots (one of 5.4 and one of 5.8 ha) that differed with respect to their mosaic character. On both plots densities of bank voles were similar in different habitats. The same trap sites were used by voles in a similar way in successive study years. Spatial variations in habitat use were primarily related to the density of plant cover and its spatial distribution providing shelter from predators. Frequency and intensity of use of trap sites by voles was positively correlated with the percent cover of shrubs and tall herbaceous plants. It was negatively correlated with the percent area without herb cover and with the percent cover of photophilous herbs. Using the correlation method, it was possible to estimate the effect of a given environmental factor on the distribution of bank voles only when the range of spatial variation of this factor was large.

20

Increase of Mean Individual Biomass [MIB] of Carabidae [Coleoptera] in relation to succession in forest habitats

72%

Schwerk A., Szyszko J.

Wiadomości Entomologiczne

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2007

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tom 26

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nr 3

The applicability of Mean Individual Biomass (MIB) of Carabidae as an indicator of succession stage was tested on 35 forest stands in western Poland. The differences in MIB values as well as similarity indices (Jaccard index, Wainstein index) were calculated between two inventories at the study sites separated by a time span of 13 years. The hypotheses were set that (1) MIB values increase with time on the study areas and (2) the differences in MIB values are negatively correlated with the corresponding similarity indices. The results show an increase in numbers of species and individuals of big sized carabids in the total samples. MIB values increase at the vast majority (85.7%) of the individual study sites between the two inventories. The increase in MIB shows a significant negative correlation with both similarity indices. The correlation is more pronounced when using the Wainstein index. The results verify the applicability of MIB of Carabidae as an indicator of stage of succession. Based on the results we suggest MIB as a useful tool in forest research and forest management.

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