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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Oak (Quercus spp.) response to climate differs more among sites than among species in central Czech Republic

100%
Rybnicek M., Cermak P., Prokop O., Zid T., Trnka M., Kolar T.
Dendrobiology
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2016
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tom 75
Climatic parameters are the main environmental factors affecting tree growth. The main aim of the presented study was to determine whether different oak species growing under contrasting environmental conditions show different sensitivity to climatic parameters. Four oak stands with Quercus robur, Quercus petraea, Quercus polycarpa and Quercus dalechampii growing in the same area were evaluated. Standard dendrochronological methods were used for sample preparation, ring width measurements, cross-dating, chronology development, and the assessment of growth-climate response patterns. Although the species grew under different environmental conditions, their local tree-ring chronologies are highly correlated. The radial growth responses to climatic parameters differ slightly, but the response depends more on local site conditions than on the oak species. At the same time, the strongest correlations between radial growth and climatic parameters were identical among species and sites. The amount of water available in the soil was the main climate-dependent factor limiting radial growth. Approximately since the 1990s, the distribution of rainfalls within the growing season has changed at the expense of spring precipitation. The significance of relative soil moisture content during spring for oak growth increased and the significance of summer values decreased.
2
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The use of LabView environment for the bulding of supervision system controlling the climatic and technical parameters in farm rooms

100%
Buczaj M., Sumorek A.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2011
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tom 11
3

The importance of forest patches in supporting steppe-species: a case study from the Carpathian Basin

100%
Erdos L., Tolgyesi C., Kormoczi L., Batori Z.
Polish Journal of Ecology
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2015
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tom 63
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nr 2
Moderating effects of trees on the environment in their immediate proximity are considered an important force in structuring plant communities, especially in harsh environments. In the semi-arid regions of the middle Carpathian Basin, such facilitative influences are expected to become crucial for the survival of several plant species, given the current warming and drying tendencies. We used 20 × 20 m plots to analyze whether grassland species adapted to mesic conditions penetrate forest patches, where they are able to survive. Using transects and the moving split window analysis, we also investigated how far the positive effects of the forest patches extend into grasslands, and whether this enables the existence of a steppe community that cannot tolerate extreme dry conditions and unfavorable soils. We found that beside forest-related species, forest patches hosted large numbers of grassland-related species. Among them, plants of closed steppe grasslands were the most numerous, which usually cannot tolerate the harsh conditions of open sandy grasslands, and are often confined to areas with better water and soil conditions. Our results showed that there is a 5–8 m wide closed steppe zone around the forest patches. Some species that are not able to survive in open xeric sandy grasslands are restricted to this zone. Unfortunately, while considerable attention is paid to the research, protection and restoration of sandy grasslands, forest patches are usually neglected. Our results emphasize that the establishment of individual trees and groups of trees should be actively promoted, because they have considerable nature conservation benefits by supporing closed steppe species.
4

Variability of air temperatures of the temperate climatic belt of the Beskid Sadecki Mountains in the period 1971-2000 as exemplified by the Climatological Station in Kopciowa

80%
Feliksik E., Wilczynski S., Durlo G.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
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2001
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tom 04
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nr 2
5

Influence of climate parameters on long-term variations of the distribution of phytoplankton biomass and nutrient concentration in the Baltic Sea simulated by a 3D model

80%
Dzierzbicka-Glowacka L., Piskozub J., Jakacki J., Janecki M., Nowicki A.
Polish Journal of Ecology
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2012
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tom 60
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nr 4
We used a 3-D coupled seaice ecological model of the Baltic Sea to investigate the influence of long-term trends in average temperature, wind speed and solar irradiance on nutrients concentration and distribution of phytoplankton. We tested the sensitivity of the model to changes of the main physical parameters such as temperature, wind speed, solar and thermal radiation performing several numerical experiments with different configurations. Discussion about the relevance of the results for the expected future climate change is provided. The calculations were done for whole Baltic Sea for the period from 2004 to 2048. The results of the numerical simulations for the different areas of Baltic Sea (nine stations: Gulf of Gdańsk, Gdańsk Deep, Gotland Deep, Bornholm Deep, Gulf of Finland, Gulf of Riga, Gulf of Bothnian, Bothnian Sea, Danish Straits) were presented. The simulations results show significant changes in phytoplankton biomass and nutrient concentration distributions, which took place in the regions where a significant increase in currents (to 100 cm s-1) was found. The results of the numerical simulations for five years (2000– 004) are consistent with in situ observations for temperature and phytoplankton (Dzierzbicka-Glowacka et al. 2011b).
6

Analysis of distribution patterns of selected ephemeral wetland species in Western Pomerania (NW Poland, NE Germany)

80%
Popiela A., Nalepka D., Lysko A.
Biodiversity: Research and Conservation
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2010
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tom 19
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Processes of running sands decay in the Bledow Desert during the last 30 years [Silesian Upland, South Poland]

80%
Rahmonow O., Snieszko Z.
Acta Agrophysica
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2001
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tom 50
The Błędów Desert is situated in the south of Poland. In this area, sand-gravel sediments predominate. The origin of the Błędów Desert is not associated with climatic conditions but with a strong development of excavation industry which started in the region in the Middle Ages. The surrounding forests became the main fuel source for the development of mining and metallurgical industry. Therefore, the area of the Błędów Desert was completely deforested. The paper presents reasons for the acceleration of biocenotical systems in the investigation area. For this purpose, transects representative for the following stages of plants successions: stage of encroachment plants, stage of sodding, stage of bushes (shrubs), stage of biogroup and stage of afforestation were made. Plant succession in the investigated transects developed in a multidirectional way. The ground for plants settling in the Błędów Desert represents fluvoiglacial, fluvial and aeolian sand with various grain sizes. Locally, in the old deflation fields, relict horizons of older podzolic and rust-coloured soil are the ground for the invading plants. The process of plant and soil succession takes place at the same time. Content of the available mineral elements in the initial horizons is different; it depends on the plant species in the places where these horizons developed.
8

Ecological background of the floristic diversity in northern Asia

80%
Malyshev L. I.
Fragmenta Floristica et Geobotanica. Supplementum
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1993
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tom 02
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nr 1
9

La contribution des experiences en laboratoire aux recherches sur le periglaciaire: histoire, acquis et perspectives

70%
Coutard J. P., Lautridou J. P., Ozouf J. C.
Biuletyn Peryglacjalny
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2000
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tom 39
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