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Zwackhia viridis is a crustose lichen being found in forests throughout Poland. It belongs to rare species being labelled primeval forest lichens which are associated with large forest complexes. The eastern populations of Z. viridis were examined using RAPD technique in order to check whether geographic distance affects genetic diversity of the populations under study. The analysis of seven populations of that species showed large intraspecific diversity. The greatest genetic similarity occurred between populations from the north-eastern area of the country, about 300 km away from each other. In dendrograms, only these populations have simple matching distance greater than 50%.
Detailed knowledge of the foraging behaviour of endangered species, especially in relation to available resources, may be useful in conservation management. I studied the year-round foraging behaviour of the White- backed Woodpecker in broadleaved, primeval Białowieża Forest (NE Poland), and investigated how foraging time was divided among various substrates and foraging techniques. Of the 13 tree species used for foraging, woodpeckers were most frequently recorded utilising the three most common tree species: hornbeam Carpinus betulus, lime Tilia cordata and spruce Picea abies (totalling 61-68% of observed time), and the proportional use of tree species did not change seasonally. Observations of birds foraging on snags increased and foraging on fallen trees decreased from spring to winter. Foraging was most frequently recorded on dead substrates (72-85%), usually those covered with bark. Mean time of foraging on an individual tree increased significantly from spring to winter. The foraging techniques most often used by woodpeckers were bark-pecking (29-11%) and superficial wood-pecking (12-27%). During winter, foraging techniques did not change significantly in relation to weather. These results suggest that forest stand composition is less important to this species than tree condition. Most broadleaved tree species and, under some conditions, spruce can be utilised for foraging by this woodpecker if they provide dead or dying substrates.
W pracy przedstawiono metodykę stosowaną w monitoringu biologicznym, prowadzonym od 1994 roku w celu oceny poziomu i kierunku zmian intoksykacji środowiska leśnego Puszczy Białowieskiej. Metoda bioindykacyjna polega na analizie składu chemicznego wybranego bioindykatora roślinnego: mchu rokietnika pospolitego Pleurozium schreberi, zbieranego corocznie w sieci powierzchni bioindykacyjnych. Zawartość metali ciężkich (Fe, Mn, Zn, Cu, Cr, Ni, Pb, Cd) w próbkach mchu jest oznaczana metodą optycznej spektrometrii emisyjnej z plazmą wzbudzoną indukcyjnie (ICP-OES). Podano błąd analityczny zastosowanej metody dla poszczególnych pierwiastków oraz limity detekcji oraz granice oznaczalności metali ciężkich dla procedury badawczej PB-07. Przedstawiono ocenę poziomów i trendów zmian oraz rozkładu przestrzennego kumulacji metali ciężkich przez mech na obszarze Puszczy Białowieskiej w latach 1994-2009.
The paper presents the results of studies on bryophyte flora of the Reberce forest reserve located in the Przemyśl foothills. Thirty-three species of liverworts, 70 species and two varieties of mosses were found. Terrestrial (66 species) and epixylic (58) bryophytes formed the largest ecological groups in the reserve. Twenty-four protected species were also recorded, eight endangered bryophytes and six taxa considered as primeval forest species. The most interesting finds are: Bazzania trilobata, Buxbaumia viridis, Calypogeia suecica, Cephalozia catenulata, Frullania dilatata, Metzgeria conjugata, Nowellia curvifolia, Orthotrichum lyellii, O. stramineum, Trichocolea tomentella and Ulota crispa.
The paper gives an annotated list of 40 species of macrofungi found in the Białowieża Forest recently. Two genera (Mycoaciella J. Erikss. & Ryvarden and Sphaerobasidium Oberw.) and nine species (Alnicola amarescens (Quel.) R. Heim & Romagn., Ceriporiopsis rivulosa (Berk. & M. A. Curtis) Gilb. & Ryvarden, Henningsomyces puber (Romell ex W. B. Cooke) D. A. Reid, Mycena silvae-nigrae Maas Geest. & Schwobel, Mycoaciella bispora (Stalpers) J. Erikss. & Ryvarden, Psathyrella maculata (C. S. Parker) A. H. Sm., Sphaerobasidium minutum (J. Erikss.) Oberw. ex Julich, Steccherinum tenuispinum Spirin, Zmitr. & Malysheva, and Xenasma pruinosum (Pat.) Donk) are reported for the fi rst time from Poland. A further 23 species are new for the Białowieża Forest: Antrodia mellita Niemela & Penttila, Antrodiella citrinella Niemela & Ryvarden, Asterodon ferruginosus Pat., Athelia decipiens (Hohn. & Litsch.) J. Erikss., Byssocorticium atrovirens (Fr.) Bondartsev & Singer ex Singer, Conferticium ochraceum (Fr.) Hallenb., Coniophora olivacea (Fr.) P. Karst., Crepidotus crocophyllus (Berk.) Sacc., C. lundellii Pilat, Dacryomyces tortus (Willd.) Fr., Exidia villosa Neuhoff, Hyphodontia pruni (Lasch) Svrček, Kavinia alboviridis (Morgan) Gilb. & Budington, Lentinus suavissimus Fr., Mycoacia uda (Fr.) Donk, Peniophora limitata (Chaillet ex Fr.) Cooke, Pezicula acericola (Peck) Peck ex Sacc. & Berl., Piloderma byssinum (P. Karst.) Julich, Pseudomerulius aureus (Fr.) Julich, Rectipilus fasciculatus (Pers.) Agerer, Sebacina incrustans (Pers.) Tul. & C. Tul., Sistotrema raduloides (P. Karst.) Donk and Trechispora hymenocystis (Berk. & Broome) K. H. Larss. The species new for Poland are described and their micromorphological characters are illustrated.
Nest predation is a major factor limiting breeding bird populations in primeval tree stands. Factors such as food limitation, availability of nesting sites or competition are not so important. Nest predation is usually more common along the edges of forests than in their interiors. The aim of this study was to determine how breeding losses in the secondary cavity-nester Collared Flycatcher Ficedula albicollis that bred in natural holes varied with distance from the forest edge in primeval stands of the Białowieża National Park (NE Poland). A comparison of the breeding losses along the edges and in the interiors revealed no statistical differences. The main nest predators were the forest species Apodemus flavicollis, Martes martes, and Dendrocopos major. It is better to keep forest tracts unfragmented, with a belt of bushes and thickets or woodland in an early successional stage along the edge. This would protect forest birds from predators living in open habitats.
Territoriality in Red-breasted Flycatchers was studied in the Białowieża Forest of Eastern Poland during five consecutive breeding seasons (2000-2004). In total 99 males were individually marked, and evidence of polyterritoriality was found in 10% of them. The proportion of polyterritorial males varied from 0% (in 2003) to 13.6% (in 2001). The mean distance between the first and second territories was 278 m (± 179.37, n = 10). The rate of polyterritoriality was not related to age class, as older males defended dual territories that were, on average, not more distantly separated than those of younger males. One case of polygyny was recorded. To our knowledge, this is the first evidence for polyteritoriality and polygyny in male Red-breasted Flycatchers.
Long-term observations (1991-2002) have shown that Hawfinches breed throughout the extensive Białowieża Forest; they are only slightly less numerous in the forest interior than at its edge. Population size, habitat and nest sites were studied in two plots in the species-optimal habitat (continuous oak-lime-hornbeam old-growth). The true breeding density there was 4.0-8.4, reaching as much as 15.2 p/10 ha in some years, while, according to the combined territory-mapping method for the same period, it was, on average, 5.8 pairs/10 ha in oak-lime-hornbeam, 3.3 pairs/10 ha in riparian ash-alder, but less than 0.5 pairs/10 ha in mixed coniferous-deciduous or young deciduous stands (marginal habitats for this species). Being among the most numerous species in the Białowieża Forest bird community, Hawfinches hold small nesting territories that are sometimes loosely grouped. Nests are built at an average height of 18.1 (7-34) m in the tree canopy. Hornbeams are the preferred tree species for nesting in the oak-lime-hornbeam stands (also clumps of mistletoe in the continental maple), while black alders in the riparian woodland. Originally, the Hawfinch must have been a species of old, high forests. Its recent nesting elsewhere — low in bushes or, preferably, along woodland edges — is likely to be a secondarily acquired trait; it could also be due to a bias — Hawfinch nests are more easily discovered in such localities.
Forest seed banks mostly studied in managed forests proved to be small, species poor and not reflecting aboveground species composition. Yet studies conducted in undisturbed communities indicate a different seed bank characteristic. Therefore we aimed at describing soil seed bank in an undisturbed forest in a remnant of European lowland temperate forests, the Białowieża Forest. We compared similarity between the herb layer and seed bank, similarity of seed bank between different patches, and dominance structure of species in the herb layer and in the seed bank of two related oak-hornbeam communities. We report relatively high values of Sorensen species similarity index between herb layer and seed bank of both patches. This suggests higher species similarity of the herb layer and soil seed bank in natural, unmanaged forests represented by both plots than in fragmented communities influenced by man. Although there was a set of core seed bank species present at both plots, yielding high Sorensen species similarity index values, considerable differences between plots in seed bank size and dominance structure of species were found, indicating spatial variability of studied seed bank generated by edaphic conditions. Dominance structure of species in the herb layer was not reflected in the underlying seed bank. This stresses, that natural forest regeneration cannot rely only on the seed bank, although some forest species are capable of forming soil seed banks. While forest seed banks may not reflect vegetation composition of past successional stages, they may inform on history and land use of a specific plot.
The reproductive behaviour of Wood Warblers was studied in a primeval forest area in the Białowieża National Park (E Poland). Observations carried out during twelve seasons (1976-1979, 1985-1988, 2002-2005) in deciduous and coniferous old-growth habitats spanned a 30-year period. The present paper examines whether the birds advanced their breeding dates during that time and whether any long-term shifts in fecundity or productivity were detectable. Though temperatures in the settlement period (the second half of April) rose, neither males nor females significantly advanced their dates of arrival. Wood Warblers bred earlier in 2002-2005 than in the two previous periods — the combined effect of earlier female arrival and shortening of post settlement breaks. Clutch size declined with season, was smaller in the coniferous habitat and in rodent outbreak years, but no long-term trend was perceptible. Apart from two exceptionally successful years (2003 and 2004) breeding losses remained high during the whole study. Predation was responsible for 80-95% of them and was concentrated on the nestling stage. Overall Wood Warbler phenology and breeding performance in BNP have changed relatively little during the last 30 years. These findings support the results of other studies demonstrating the remarkable resilience of this primeval forest biota to environmental change.
W pracy przedstawiono metodykę stosowaną w monitoringu zanieczyszczeń powietrza w Puszczy Białowieskiej, gdzie zlokalizowana jest sieć 7 punktów pomiarowych, w których mierzone jest stężenie w powietrzu zanieczyszczeń gazowych (depozycja sucha) i skład chemiczny opadów atmosferycznych (depozycja mokra). Pomiary wykonywane są według jednolitej metodyki stosowanej w europejskim i krajowym monitoringu lasu. Opisano metodę pasywną pomiaru zanieczyszczeń gazowych oraz metody badań opadów atmosferycznych, w tym metodę chromatografii jonowej (IC) oraz optycznej spektrometrii emisyjnej z plazmą wzbudzoną indukcyjnie (ICP-OES). Przedstawiono ocenę poziomu i trendów zmian oraz rozkładu przestrzennego depozycji całkowitej siarki i azotu na obszarze Puszczy Białowieskiej w latach 2002-2010.
Feeding habits of pine marten Martes martes (Linnaeus, 1758) were studied in 1985 - 1992 in the pristine forests of Białowieża National Park, eastern Poland, The study covered 5 years of moderate numbers of forest rodents and 2 years of outbreak and crash. In 1735 analysed scats, rodents (Clethrionomys glareolus, Apodemus flavi- collis, and Microtus sp.) were staple food for martens, constituting from 50% of biomass consumed in June to over 90% in October - November. Birds (mainly thrushes and woodpeckers) were captured by martens mainly in spring and summer (up to 37% biomass in June). Vegetable matter (Rubus berries, Sorbus aucuparia fruit, mush­rooms) was frequently eaten in July - October (up to 17% biomass in September). Ungulate carcasses were scavenged in winter. Marten preferred the remains of wolf and lynx kills and avoided ungulates that had died from undernutrition and/or disease. Between-year variation in marten diet was shaped by variation in rodent (especially bank vole) numbers. Percent of bank vole biomass in marten diet in autumn-winter was determined by the summer-autumn numbers of these rodents. Martens' consump­tion of mice in the cold season did not reflect the changes in mouse numbers, but it was positively correlated with their preying on bank voles. Spring numbers of mice determined the percentage of biomass of mice in marten diet in spring-summer. Snow cover significantly decreased martens' preying on C. glareolus, but not A. flavicollis and Aficroius sp, In the cold season, insectivores and ungulate carcasses were crucial alternative food for the pine marten and they compensated for the decreased avail­ability of rodents. In spring and summer, birds and fruit were alternative food, the consumption of which negatively correlated with the consumption of rodents. Snow- tracking showed that in their search for prey, martens utilized both fallen and standing trees, and moved on the ground as welt as in the forest canopy. Over 90% of all recorded attacks were on rodents. Marten attacked rodents 4.1 times/km of trail but 35% of attacks failed.
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