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Wyszukujesz frazę "Zolnierz, L." wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
Wpływ oddziaływań brzegowych na roślinność polan leśnych w Sudetach Środkowych
Influence of the edge effect on the vegetation of forest glades in the Middle Sudety Mts. (SW Poland)
Autorzy:
Pruchniewicz, D.
Żołnierz, L.
Powiązania:
https://bibliotekanauki.pl/articles/989965.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
gory
Sudety Srodkowe
Gory Sowie
Gory Bardzkie
Wzgorza Wlodzickie
Wzgorza Wyrebinskie
polany srodlesne
oddzialywania brzegowe
roslinnosc lakowa
sklad gatunkowy
roznorodnosc gatunkowa
forest glades
edge effect
species composition
functional groups
species diversity
Opis:
The influence of the edge effect on the meadow vegetation pattern was studied in the forest glades in the central part of the Middle Sudety Mts. (SW Poland). The spectacular edge effect is seen in the range of 4 m from the forest border towards the center of the glades. Within that belt we observed decrease in tree and bush species number, increase in share of graminoids and Fabaceae species, as well as increase in share of species generally related to grassland communities. A significant increase in species number and values of Shannon−Wiener diversity index was noticed within the distance of eight meters from the edges of glades.
Źródło:
Sylwan; 2014, 158, 07; 524-530
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of Calamagrostis epigejos expansion on the species composition and soil properties of mountain mesic meadows
Autorzy:
Pruchniewicz, D.
Zolnierz, L.
Powiązania:
https://bibliotekanauki.pl/articles/58902.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
Due to social and economic changes which have occurred in the last decades, many meadows located in mountain regions have ceased to be used. Abandonment of meadows leads to the degradation of their species composition. An example of degradation may be seen in the development of patches dominated by Calamagrostis epigejos. The aim of this research was to determine the influence of C. epigejos in its consecutive expansion stages on qualitative properties of meadow sward and on selected physico-chemical properties of soils. The study revealed strong degradation of mountain meadows due to the expansion of C. epigejos. The degradation manifested in a decrease in species diversity, a decline of species typical for mesic meadows, and an increased proportion of synanthropic species. The increase in aboveground biomass of C. epigejos strongly reduced the biomass of other species, while underground biomass had no effect on accompanying species. However, only a small impact of C. epigejos expansion on soil degradation was detected. The cumulating plant necromass dominated by this species caused a decrease in diversity indices and, at the same time, an increase in exchangeable forms of potassium and phosphorus in the soil.
Źródło:
Acta Societatis Botanicorum Poloniae; 2017, 86, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New distributional data on bryophytes of Poland and Slovakia, 13
Autorzy:
Górski, P.
Voncina, G.
Foudali, E.
Żołnierz, L.
Powiązania:
https://bibliotekanauki.pl/articles/2130811.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Opis:
This work presents a list of localities for the following species: Didymodon fallax var. brevifolius, Fissidens exilis, Nowellia curvifolia, Orthocaulis atlanticus, Orthotrichum lyellii, Ptilium crista-castrensis, and Syntrichia virescens.
Źródło:
Steciana; 2018, 22, 1; 13-18
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A performance comparison of sampling methods in the assessment of species composition patterns and environment–vegetation relationships in species-rich grasslands
Autorzy:
Swacha, G.
Botta-Dukat, Z.
Kacki, Z.
Pruchniewicz, D.
Zolnierz, L.
Powiązania:
https://bibliotekanauki.pl/articles/57680.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
The influence that different sampling methods have on the results and the interpretation of vegetation analysis has been much debated, but little is yet known about how the spatial arrangement of samples affect patterns of species composition and environment–vegetation relationships within the same vegetation type. We compared three data sets of the same sample size obtained by three standard sampling methods: preferential, random, and systematic. These different sampling methods were applied to a study area comprising of 36 ha of intermittently wet Molinia meadows. We compared the performance of the three methods under two management categories: managed (extensively mown) and unmanaged (abandoned for 10 years). A total of 285 vegetation-plots were sampled, with 95 plots recorded per sampling method. In preferential sampling, we sampled only patches of vegetation with an abundance of indicator species of the habitat type, while random and systematic plots were positioned independently from the researcher by using GIS. The effect of each sampling method on the patterns of species composition and species–environment relationships was explored by redundancy analysis and the significance of effects was tested by the randomization test. Preferential sampling revealed different patterns of species composition than random and systematic sampling methods. Random and systematic sampling methods have resulted in broader vegetation variability than with preferential sampling method. Preferential sampling revealed different relationship between soil parameters and species composition in contrast to random and systematic sampling methods. Although we have not found significant differences in vegetation–environment relationships between random and systematic sampling methods, random sampling revealed a more robust correlation of species data to soil factors than preferential and systematic sampling methods. Intentional restriction of vegetation variation sampled preferentially may be detrimental to statistical inference in studies of species composition patterns and vegetation–environment relationships.
Źródło:
Acta Societatis Botanicorum Poloniae; 2017, 86, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New distributional data on bryophytes of Poland and Slovakia, 10
Autorzy:
Gorski, P.
Fudali, E.
Zolnierz, L.
Smoczyk, M.
Wierzcholska, S.
Rosadzinski, S.
Dyderski, M.K.
Powiązania:
https://bibliotekanauki.pl/articles/790595.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
bryophyte
distribution
Anomodon attenuatus
Anomodon viticulosus
Dicranum viride
Gymnomitrion alpinum
Hedwigia ciliata
Homalia trichomanoides
Lophoziopsis longidens
Obtusifolium obtusum
Odontoschisma elongatum
Orthodicranum tauricum
Porella platyphylla
Syntrichia papillosa
locality list
Polska
Slovakia
Opis:
This work presents a list of localities for the following species: Anomodon attenuatus, A. viticulosus, Dicranum viride, Gymnomitrion alpinum, Hedwigia ciliata, Homalia trichomanoides, Lophoziopsis longidens, Obtusifolium obtusum, Odontoschisma elongatum, Orthodicranum tauricum, Porella platyphylla, and Syntrichia papillosa.
Źródło:
Steciana; 2017, 21, 2
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New distributional data on bryophytes of Poland and Slovakia, 12
Autorzy:
Gorski, P.
Pawlikowski, P.
Fojcik, B.
Fudali, E.
Cykowska-Marzencka, B.
Soltes, R.
Wierzgon, M.
Zolnierz, L.
Powiązania:
https://bibliotekanauki.pl/articles/790676.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Opis:
This work presents a list of localities for the following species: Bucklandiella heterosticha, Conocephalum salebrosum, Fuscocephaloziopsis lunulifolia, Hamatocaulis vernicosus, Harpanthus scutatus, Hedwigia ciliata, Leskea polycarpa, Lophoziopsis excisa, Odontoschisma denudatum, Schljakovia kunzeana, Sciuro-hypnum reflexum, Sphagnum riparium and Tomentypnum nitens.
Źródło:
Steciana; 2017, 21, 4
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane aspekty termowizyjnych pomiarów temperatury tarczy podczas eksperymentalnych badań hamulców tarczowych
Some aspects of IR temperature measurements of a disc during experimental investigations of disc brakes
Autorzy:
Kruczek, T.
Kowal, L.
Turewicz, K.
Ścieszka, S. F.
Żołnierz, M.
Powiązania:
https://bibliotekanauki.pl/articles/155564.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
hamulec tarczowy
temperatura tarczy
pomiary termowizyjne
emisyjność tarczy
disc brake
disc temperature
infrared camera measurements
disc emissivity coefficient
Opis:
Przedstawiono wybrane wyniki badań hamulca tarczowego na stanowisku laboratoryjnym. W trakcie doświadczeń mierzone były główne parametry procesu hamowania oraz rozkłady temperatury w klocku i na powierzchni tarczy hamulcowej za pomocą kamery termowizyjnej. Zebrane dane pomiarowe stanowią materiał do weryfikacji modeli matematycznych przy numerycznej symulacji działania tego typu hamulców. Głównym tematem tej pracy jest analiza zmian współczynnika emisyjności powierzchni tarczy w warunkach prowadzenia eksperymentów. Znajomość stwierdzonych prawidłowości jest przydatna przy planowaniu i prowadzeniu tego typu badań.
Selected results of testing a disc brake on the laboratory stand, Fig. 1, are presented. There were measured the parameters of braking mechanics as well as the temperature distribution in a brake block and on the disc surface. The temperature distribution was determined with use of an infrared camera. The obtained measurement data were used for verification of the mathematical models for numerical simulations of brakes operation. The problems in determination of the disc surface emissivity coefficient and the character of its changeability during experiments at different braking parameters, Figs. 58, were the objectives of the project. The measurements of the emissivity coefficient on the entire disc surface were taken repeatedly, Figs. 2, 3. A correlation between the disc emissivity coefficient and the mechanical parameters of braking was found. Despite the fact that these correlations are qualitative rather than quantitative, they are interesting from the point of view of identification of the braking process as well as of planning such experiments. During the measurements, some interesting practical experience in the field of infrared measurements of temperature of the surface of not high emissivity coefficient was gained. In the project an isothermal protective screen was applied to normalize the radiation impact of the environment on the measurements, Figs 1, 4.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 9, 9; 969-972
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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