Different temperature sensitivity and kinetics of soil enzymes indicate seasonal shifts in C, N and P nutrient stoichiometry in acid forest soil

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F14%3A43887145" target="_blank" >RIV/60076658:12310/14:43887145 - isvavai.cz</a>
Result on the web
<a href="http://download.springer.com/static/pdf/218/art%253A10.1007%252Fs10533-013-9898-1.pdf?auth66=1422182864_84084019bd7a1f07c698f5fcb16d85ad&ext=.pdf" target="_blank" >http://download.springer.com/static/pdf/218/art%253A10.1007%252Fs10533-013-9898-1.pdf?auth66=1422182864_84084019bd7a1f07c698f5fcb16d85ad&ext=.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10533-013-9898-1" target="_blank" >10.1007/s10533-013-9898-1</a>

Result language
angličtina
Original language name
Different temperature sensitivity and kinetics of soil enzymes indicate seasonal shifts in C, N and P nutrient stoichiometry in acid forest soil
Original language description
Acid forest soils in the Bohemian Forest in Central Europe are biogeochemically imbalanced in organic C, N and P processing. We hypothesized that these imbalances can be due to different temperature sensitivities of soil enzyme activities and their affinities to substrate in litter and organic soil horizons. We measured potential activities of five main soil enzymes (beta-glucosidase, cellobiohydrolase, Leu-aminopeptidase, Ala-aminopeptidase, and phosphatase) responsible for organic carbon, nitrogen andphosphorus acquisition. We also modeled potential in situ enzyme activities and nutrient release based on continuous in situ temperature measurements. We determined basic kinetic parameters (K-m, V-max), enzyme efficiencies (k(cat)) and temperature sensitivities (E-a and Q(10)) according to Michaelis-Menten kinetic and modified Arrhenius models. Our results showed significant differences in substrate affinities between the litter and organic soil horizons. Higher aminopeptidase affinity
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
CE - Biochemistry
OECD FORD branch
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Project
<a href="/en/project/GA526%2F08%2F0751" target="_blank" >GA526/08/0751: Soil processes and microbial communities related to C and N cycles during spruce forest recovery after bark beetle outbreak</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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