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Aleksandra Samecka-Cymerman Grzegorz Kosior Krzysztof Kolon Bronisław Wojtuń Krzysztof Zawadzki Andrzej Rudecki Alexander J. Kempers 《Journal of Atmospheric Chemistry》2013,70(2):105-114
This research is continuation of the investigation of metal accumulation in native and transplanted moss Pleurozium schreberi in the most industrialized and affected region in Poland (Upper Silesia). We tested the hypotheses that in Upper Silesia transplants of P. schreberi may be used in a 90 days bioindication experiment in case native specimens are absent; a 90 days exposure of transplanted P. schreberi was long enough for evaluation of Hg pollution of the environment. An assay was carried out with native mosses at 27 polluted sites and mosses from an uncontaminated control site transplanted to the same 27 polluted sites. P. schreberi collected from the same sites as classified for more and less polluted basing on Pb and Zn concentrations show quite different pattern of pollution with mercury; The accumulation of Hg by the transplants increased much faster in the first 45 days of the experiment (accumulation factor 1.5–6.7; mean 3.4?±?0.5) in comparison with the second period from day 45 to 90 (accumulation factor 1.0–1.6; mean 1.2?±?0.1). The 90 days exposure of transplanted P. schreberi was long enough for evaluation of Hg pollution of the environment. Transplants of P. schreberi may be used in a 90 days bioindication experiment in case native specimens are absent. 相似文献
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Restructuring the Polish countryside is a complex and urgent task. Adapting agriculture for EU entry will mean a considerable
reduction in employment and rural diversification is needed because other sectors of the national economy will not be able
to absorb all the displaced people if they arrive in the towns. However, providing non-agricultural employment in rural areas
depends to a large extent on the technical infrastructure available: running water, sewerage systems, gas supply and telecommunications.
The paper deals with voivodeships in southern and southwestern Poland (formerly Galicia) and shows that while much progress
has been made since the end of the communist period, the inherited inequalities are being perpetuated and in some cases increased.
However, even where the infrastructure is satisfactory, private business does not develop at a uniform rate and action is
needed to stimulate communities in remoter rural areas, particularly in the eastern part of the study region.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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