Denitrification potential in a grassland subsoil: effect of carbon substrates

A - Papers appearing in refereed journals

Murray, P. J., Hatch, D. J., Dixon, E. R., Stevens, R. J., Laughlin, R. J. and Jarvis, S. C. 2004. Denitrification potential in a grassland subsoil: effect of carbon substrates. Soil Biology and Biochemistry. 36 (3), pp. 545-547.

AuthorsMurray, P. J., Hatch, D. J., Dixon, E. R., Stevens, R. J., Laughlin, R. J. and Jarvis, S. C.
Abstract

We examined the potential of a subsoil to denitrify nitrate under optimal anaerobic conditions in a laboratory-based incubation when supplied with a range of C substrates of increasing recalcitrance. Both topsoil and its associated subsoil were supplied with nitrate and either glucose, starch or cellulose. Microbial respiration and the evolution of N2O and N2 were measured. The subsoil supported low amounts of microbial activity and responded only to the glucose treatment; with less than one-fifth of the N2O production measured in the top soil. Overall, our findings demonstrated that the denitrification potential of this particular subsoil is relatively low and that only simple carbohydrates could be utilised readily by the resident microorganisms.

Year of Publication2004
JournalSoil Biology and Biochemistry
Journal citation36 (3), pp. 545-547
Digital Object Identifier (DOI)doi:10.1016/j.soilbio.2003.10.020
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Natural Environment Research Council
Funder project or codeSoil Science and Environmental Quality (SSEQ)
Project: 2430 6138
Output statusPublished
Publication dates
Online02 Dec 2003
Publication process dates
Accepted31 Oct 2003
PublisherElsevier
Copyright licensePublisher copyright
ISSN0038-0717

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