Isoprene emission from a subarctic peatland under enhanced UV‐B radiation

• DOI: 10.1111/j.1469-8137.2007.02164.x
• Publication Date: 2007-07-21T02:41:14Z
• Authors: Päivi Tiiva; Riikka Rinnan; Patrick Faubert; Janne Räsänen; Toini Holopainen; Esko Kyrö; Jarmo K. Holopainen
• Keywords: Subarctic climate; Isoprene

• Isoprene is a reactive hydrocarbon with an important role in atmospheric chemistry, and emissions from vegetation contribute to carbon fluxes. The magnitude of isoprene arctic peatlands not known, it may be altered by increasing UV-B radiation. emission was measured the dynamic chamber method subarctic peatland under long-term enhancement radiation targeted correspond 20% loss stratospheric ozone layer. site type flark fen dominated moss Warnstorfia exannulata sedges Eriophorum russeolum Carex limosa. relationship between species densities also assessed. were significantly increased enhanced during second (2004) fourth (2006) growing seasons exposure. Emissions related density E. russeolum. dominant moss, W. exannulata, proved emit small amounts laboratory trial. Subarctic fens, even without Sphagnum are significant source atmosphere, especially periods warm weather. Warming Arctic together substantially increase emissions.