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  • Impeded drainage stimulates extracellular phenol oxidase activity in riparian peat cores

    Author(s)
    Toberman, H.
    Freeman, C.
    E Artz, R.
    Evans, C.
    Fenner, N.
    Griffith University Author(s)
    Toberman, Hannah
    Year published
    2008
    Metadata
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    Abstract
    Peat drainage, a common land-use practice in Europe, has been associated with habitat degradation and increased particulate and dissolved carbon release. In the UK, peatland drain blockage has been encouraged in recent years as a management practice to preserve peatland habitats and to reduce fluvial carbon loss and municipal water discoloration. Drain blockage has, however, been found to increase drain-water dissolved organic carbon (DOC) concentrations and coloration in the short term. In order to investigate the contribution of changes in extracellular phenol oxidase activity to the increase in water coloration following ...
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    Peat drainage, a common land-use practice in Europe, has been associated with habitat degradation and increased particulate and dissolved carbon release. In the UK, peatland drain blockage has been encouraged in recent years as a management practice to preserve peatland habitats and to reduce fluvial carbon loss and municipal water discoloration. Drain blockage has, however, been found to increase drain-water dissolved organic carbon (DOC) concentrations and coloration in the short term. In order to investigate the contribution of changes in extracellular phenol oxidase activity to the increase in water coloration following peatland drain blockage, cores collected from a riparian peatland in North Wales were incubated under impeded drainage conditions. Impeded drainage resulted in the stimulation of peat extracellular phenol oxidase activity and heightened soluble phenolic concentrations, suggesting that changes in extracellular phenol oxidase activity may be a key driver of increases in DOC and water coloration following peatland drain blockage. An increase in peat pH with impeded drainage was also observed that may have contributed to the heightened soluble phenolic concentrations - directly (through effects on solubility) and / or indirectly as a driver of the elevated extracellular phenol oxidase activity.
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    Journal Title
    Soil Use and Management
    Volume
    24
    Issue
    4
    DOI
    https://doi.org/10.1111/j.1475-2743.2008.00174.x
    Subject
    Soil Biology
    Soil Sciences
    Crop and Pasture Production
    Publication URI
    http://hdl.handle.net/10072/38502
    Collection
    • Journal articles

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