Microbial and plant ecology of a long-term TNT-contaminated site

Travis, E.R., Bruce, N.C. and Rosser, S.J. (2008) Microbial and plant ecology of a long-term TNT-contaminated site. Environmental Pollution, 153(1), pp. 119-126. (doi: 10.1016/j.envpol.2007.07.015)

Abstract

The contamination of the environment with explosive residues presents a serious ecological problem at sites across the world, with the highly toxic compound trinitrotoluene (TNT) the most widespread contaminant. This study examines the soil microbial community composition across a long-term TNT-contaminated site. It also investigates the extent of nitroaromatic contamination and its effect on vegetation. Concentrations of TNT and its metabolites varied across the site and this was observed to dramatically impact on the extent and diversity of the vegetation, with the most heavily contaminated area completely devoid of vegetation. Bryophytes were seen to be particularly sensitive to TNT contamination. The microbial population experienced both a reduction in culturable bacterial numbers and a shift in composition at the high concentrations of TNT. DGGE and community-level physiological profiling (CLPP) revealed a clear change in both the genetic and functional diversity of the soil when soil was contaminated with TNT. Long-term contamination of soil with TNT reduces the extent and diversity of vegetation, decreases culturable bacterial numbers and shifts the microbial community composition.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Rosser, Professor Susan and Travis, Dr Emma
• Authors: Travis, E.R., Bruce, N.C., and Rosser, S.J.
• College/School: College of Medical Veterinary and Life Sciences > School of Molecular Biosciences
• Journal Name: Environmental Pollution
• Publisher: Elsevier
• ISSN: 0269-7491
• ISSN (Online): 1873-6424
• Published Online: 06 September 2007