Summary
Rising salinization of extended river-sides and estuary areas due to climate warming might alter microbial metabolic activity and cause unpredictable consequences for matter and energy turnover in soil. Therefore, we investigated the combined effects of salinization and warming on microbial activity and growth, examining CO₂ emissions (matter loss) and heat production (energy loss) during glucose metabolism. Soil from Elbe estuary was artificially salinized to medium (2.06 mS cm −1 ) and high (3.45 mS cm −1 ) levels, and ambient low salinity soil (0.93 mS cm −1 ) served as the control. We examined the influence of a comprehensive +2 °C climate warming (20 vs. 22 °C) on soil respiration (CO 2 emission), heat release, enzyme kinetics (cellobiohydrolase, β-glucosidase, acid phosphomonoesteras
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