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Ranga bioindykacji w ekotoksykologii wód

100%
Sadowska U.
Studia Ecologiae et Bioethicae
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2012
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vol. 10
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issue 2
33-52
EN
Bioindication methods are applied in ecotoxicological studies which in turn are widely used in the biological monitoring of surface water. Bioindication has been applied for a long time and so far it has created a multiple classification based on diagnosis groups of organisms. Bioindicators play a significant role in bioindication; they are species used to monitor the health of the environment or ecosystem. Some of them are standard test organisms used in ecotoxicology in the so-called bioassays, which provide a great deal of information about the type and influence of pollution. These studies are vital nowadays, as compounds have been found to be the greatest threat to aquatic ecosystems. In relation to ecotoxicology, research allows us to determine bioconcentration, bioaccumulation and biomagnification factors, and to assess the ecological status of water used in many different indexes so as to determine such relevant parameters as saprobic, biological bio-diversity and biotic indexes. Poland is preparing for the extension of monitoring systems that take into account all the necessary elements of the environment, even the sediments. It is required by the Water Frame Directive.
2

Nicienie glebowe na polu i odłogu – zagęszczenie i różnorodność

100%
Ilieva-Makulec K., Franczak R., Makulec G.
Studia Ecologiae et Bioethicae
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2011
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vol. 9
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issue 2
43-66
EN
The results presented here concern the study, which was carried out in the spring 2009 on an arable field and a fallow. Following parameters were analysed: density, taxonomic composition, trophic and dominance structure of soil nematode communities. Shannon-Weaver diversity index, Sørensen’s index of similarity and Maturity index were also calculated. The results show that the nematode community in the soil of arable field differed from that on the fallow in respect of density and trophic structure. Nematode density was higher in the arable soil than in the fallow. The group of bacterial-feeding nematodes was the most numerous among five trophic groups recorded in the study. The higher density of that group in the arable soil than in the fallow indicates the positive response of bacterial-feeding nematodes to the higher nutrient supply after the manure applying. The results show that in three years of fallow nematode communities became more mature and diverse than in the arable soil. The study confirms the indicative value of some nematode community parameters and indices for the assessment of the varying human intervention and the functional state of soil.
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