Input of easily available organic C and N stimulates microbial decomposition of soil organic matter in arctic permafrost soil

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F14%3A43887508" target="_blank" >RIV/60076658:12310/14:43887508 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0038071714001345" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0038071714001345</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.soilbio.2014.04.014" target="_blank" >10.1016/j.soilbio.2014.04.014</a>

Result language
angličtina
Original language name
Input of easily available organic C and N stimulates microbial decomposition of soil organic matter in arctic permafrost soil
Original language description
Rising temperatures in the Arctic can affect soil organic matter (SOM) decomposition directly and indirectly, by increasing plant primary production and thus the allocation of plant-derived organic compounds into the soil. Such compounds, for example root exudates or decaying fine roots, are easily available for microorganisms, and can alter the decomposition of older SUM ("priming effect"). We here report on a SUM priming experiment in the active layer of a permafrost soil from the central Siberian Arctic, comparing responses of organic topsoil, mineral subsoil, and cryoturbated subsoil material (i.e., poorly decomposed topsoil material subducted into the subsoil by freeze-thaw processes) to additions of C-13-labeled glucose, cellulose, a mixture of amino acids, and protein (added at levels corresponding to approximately 1% of soil organic carbon).Our findings provide a first mechanistic understanding of priming in permafrost soils and suggest that an increase in the availability of o
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DF - Pedology
OECD FORD branch
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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