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Observations of a seasonally shifting thermal optimum in peatland carbon-cycling processes; implications for the global carbon cycle and soil enzyme methodologies ... article from: Soil Biology and Biochemistry]
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Observations of a seasonally shifting thermal optimum in peatland carbon-cycling processes; implications for the global carbon cycle and soil enzyme methodologies ... article from: Soil Biology and Biochemistry] | Digital

by N. Fenner (Author), C. Freeman (Author), B. Reynolds (Author)

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Binding:  Digital
Publisher:  Elsevier


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This digital document is a journal article from Soil Biology and Biochemistry, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Thermal gradient apparatus has been used to study enzyme activity and carbon cycling in peat collected seasonally from a Northern upland peatland. A thermal optimum was observed in the peat where maximum carbon-cycling enzyme activities (phenol oxidase and @b-glucosidase), phenolic compound concentrations, dissolved organic carbon (DOC) concentrations and microbial respiration (CO"2 efflux) were all found in a given season. The thermal optimum for these carbon-cycling processes coincided with the highest ambient soil temperature recorded at the time of peat collection, suggesting microbial acclimation to the external conditions. Under the waterlogged conditions of this experiment, phenol oxidase activites correlated positively with phenolic compounds (winter 0.96, P
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