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Soil microorganisms as controllers of methane emission from soils
Elhottová, Dana ; Němcová, Anna ; Chroňáková, Alica ; Šimek, Miloslav
The pilot study on functional microbial groups responsible for methanogenic and methanotrophic processes in soil of specific model ecosystem – the cattle overwintering pasture was given. The enrichment by methanogenic archaea was shown in soils strongly impacted due to cattle pasture. The increased methanogenic abundance was accompanied by increased abundance of methylotrophic bacteria. Nevertheless, the ratio of methylotrophic to methanogenic microorganisms was significantly higher in the control soils without cattle impact in comparison to the cattle-impacted soils.
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Mercury content and speciation in contaminated soils
Hojdová, Maria ; Rohovec, Jan ; Navrátil, Tomáš
The study deals with the determination of Hg distribution and speciation in soils with different level of contamination in the CR. The highest concentrations of Hg were found in topsoil horizons and declined with increasing depth and decreasing content of humus. Thermodesorption analysis distinguished Hg2+ weakly bound to clay minerals from Hg bound to organic matter or sulfides.
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Metodické aspekty studia biodiverzity v půdě
Šimek, Miloslav ; Krištůfek, Václav
Soil has many ecological and human-linked functions which can be fulfilled mostly due to the presence of countless living creatures - soil biota. Diversity of soil organisms is often linked to other important soil attributes, e.g. fertility, productivity, resilience, quality and health, as well as soil degradation. In this paper, concept of soil biodiversity is analysed and traditional and current methodological approaches in studying soil biodiversity are listed and briefly discussed
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