“…In nature, however, the decomposition of SOM is mediated by extracellular enzymes, produced by microorganisms (Allison et al, 2010 ; Glanville et al, 2012 ; Zimmermann and Bird, 2012 ; Van Gestel et al, 2013 ). Therefore, deviations from Arrhenius behavior can occur as a consequence of temperature sensitivity of enzyme systems, through enzyme denaturation and proteolysis, for example (Bennett et al, 2008 ; Maire et al, 2013 ; Goyal et al, 2014 ) or by temperature-accelerated desorption of immobilized enzymes (Nannipieri et al, 1996 ; Nielsen et al, 2006 ). Besides that, changes in the temperature dependency of microbial communities may cause expression of various set of isoenzymes (i.e., an enzyme with the same function but a different structure) or changes in enzyme conformation (Bradford, 2013 ).…”