The fate of C-14-naphthalene in soil microcosms containing Scots pine seedlings and enchytraeids

Louise Amanda Uffindell, Andy A. Meharg

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Abstract

The fate of freshly spiked and aged C-14-naphthalene associated residues as investigated in the presence and absence of ectomycorrhizal Scots pine seedlings and enchytraeid worms, in a factorial experimental design. Microcosms were used which enabled the C-14-labelled naphthalene associated residues to be quantified, including plant lipids which acted as an additional naphthalene sink within the microcosms. The presence of plant roots altered the availability of the C-14-naphthalene and associated residues to degrading microbes. Mineralisation and volatilisation of C-14 naphthalene in freshly spiked soil were lower in the presence of Scots pine. Conversely, in soil aged for 180 d, Scots pine increased mineralisation, and bioavailability of naphthalene. Root-mediated processes, microbial activity and enchytraeids interact with desorption, bioavailability and mineralisation of naphthalene. (c) 2006 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)560-566
Number of pages7
JournalSoil Biology and Biochemistry
Volume39
Issue number2
Early online date13 Oct 2006
DOIs
Publication statusPublished - Feb 2007

Keywords

  • naphthalene
  • Scots pine
  • enchytraeids
  • ageing
  • desorption
  • polycyclic aromatic-hydrocarbons
  • coniferous forest soil
  • ectomycorrhizal fungi
  • degradation
  • growth
  • decomposition
  • contaminants
  • worms
  • plant
  • PAH

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