Vegetation composition of roadside verges in Scotland

The effects of nitrogen deposition, disturbance and management

Anne-Marie Truscott, S. C F Palmer, G. M. McGowan, J. N. Cape, S. Smart

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Vehicular emissions of NOx and NH3 result in elevated concentrations of nitrogen at roadside verges. To determine the extent that vehicular nitrogen emissions, disturbance and management affect the vegetation composition of road verges, a survey of 92 verges in Scotland was carried out with sites stratified by background nitrogen deposition and road type. NO x and NH3 concentrations were monitored at 15 key sites for a year, and showed a decreasing gradient with increasing distance from the road. Ellenberg fertility indices of the vegetation communities also showed a general decrease with increasing distance from the road, but there was no straightforward correlation with NOx and NH3 air concentrations between sites. Cover of bare ground, ruderal species and salt-tolerant species were highest at the verge edge. The proximity of the verge to traffic is important both in terms of NOx and NH3 gradients, but also for deposited salt, grit and physical disturbance.

Original languageEnglish
Pages (from-to)109-118
Number of pages10
JournalEnvironmental Pollution
Volume136
Issue number1
DOIs
Publication statusPublished - Jul 2005

Fingerprint

Roadsides
Scotland
Vehicle Emissions
Nitrogen
road
disturbance
vegetation
nitrogen
Salts
Chemical analysis
salt
physical disturbance
ruderal
Fertility
Air
fertility
effect
air

Keywords

  • Ellenberg
  • Fertility
  • Nitrogen
  • Pollution
  • Roadside verges

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Pollution

Cite this

Vegetation composition of roadside verges in Scotland : The effects of nitrogen deposition, disturbance and management. / Truscott, Anne-Marie; Palmer, S. C F; McGowan, G. M.; Cape, J. N.; Smart, S.

In: Environmental Pollution, Vol. 136, No. 1, 07.2005, p. 109-118.

Research output: Contribution to journalArticle

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