The effect of litter type and macrofauna community on litter decomposition and organic matter accumulation in post-mining sites |
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Authors: | Jan Frouz |
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Institution: | (1) Institute of Soil Biology, Biological Center, Academy of Sciences of the Czech Republic, Na Sádkách 7, CZ-37005 České Budějovice, Czech Republic |
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Abstract: | Field microcosms consisting of mineral soil (spoil substrate) and two types of litter taken either from an unreclaimed site
with spontaneously developed vegetation (mostly Salix caprea) or from an alder plantation (a mixture of Alnus glutinosa and A. incana) were exposed in spontaneously developed or reclaimed sites at a post-mining heap near Sokolov (Czech Republic) for one year.
The litter types differed remarkably in C:N ratio which was 29 for spontaneous litter and 14 for alder litter. The two microcosm
types were either accessible or not accessible to soil macrofauna. The effect of macrofauna exclusion on soil mixing was complex
and depended on litter quality and the site that determined soil fauna composition. In reclaimed sites where macrofauna was
dominated by saprophags, mainly earthworms, the macrofauna access increased soil mixing. In sites where predators dominated,
the macrofauna exclusion probably suppressed fragmentation and mixing activity of the mesofauna. |
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Keywords: | soil formation reclamation succession litter type macrofauna |
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