Dissipation of bacterially derived C and N through the meso- and macrofauna of a grassland soil

Philip J. Murray*, Christopher D. Clegg, Felicity V. Crotty, Noelia de la Fuente Martinez, Jennifer K. Williams, Rod P. Blackshaw

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (SciVal)

Abstract

Feeding relationships between organisms may be determined by observations of behaviour in manipulative experiments or, as in more recent times, by the use of stable isotope labelling to trace the passage of (13)C and (15)N through food webs. Here we introduce living bacteria, labelled with both (13)C and (15)N into intact soil cores to understand further the movement of bacterially sourced C and N into the meso- and macrofauna of a grassland soil. We found that these groups showed a range of isotope levels which relate to their feeding strategies. Some had no label (e.g. dipterous larvae), whilst others were highly labelled which may indicate a preference for the added bacteria. This latter group included Collembola, generally perceived as being predominantly fungal feeders. This work describes a novel technique which has the potential to provide critical information about the dissipation of bacterially derived C and N through the soil food web. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1146-1150
Number of pages5
JournalSoil Biology and Biochemistry
Volume41
Issue number6
Early online date17 Mar 2009
DOIs
Publication statusPublished - Jun 2009

Keywords

  • ISOTOPE ANALYSIS
  • CARBON ASSIMILATION
  • FOOD WEBS
  • (15)N
  • DYNAMICS
  • Grassland
  • Soil food webs
  • COLLEMBOLA
  • FLUXES
  • (13)C
  • NITROGEN MINERALIZATION
  • GROWTH
  • AGRICULTURAL MANAGEMENT
  • PLANTS
  • Stable isotopes

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