Dating Recent Peat Accumulation in European Ombrotrophic Bogs

• DOI: 10.2458/azu_js_rc.55.16057
• Publication Date: 2013-05-09T03:18:02Z
• Authors: Johannes van der ...
• Keywords: Ombrotrophic; Deposition

This study compares age estimates of recent peat deposits in 10 European ombrotrophic (precipitation-fed) bogs produced using the 14C bomb peak, 210Pb, 137Cs, spheroidal carbonaceous particles (SCPs), and pollen. At 3 sites, results different dating methods agree well. In 5 cores, there is a clear discrepancy between peak 210Pb estimates. upper layers profiles, are agreement. However, with increasing depth, difference appears to become progressively greater. The evidence from sites featured suggests that, provided aboveground plant material (seeds, leaves) selected for dating, reliable method, not significantly affected by incorporation old carbon low content originating sources including air pollution deposition or methane decomposition. that too may be explained enrichment activity surface resulting hypothesized mechanism where rapidly infilling hollows, rich binding scavenge associated dissolved organic matter passing through hollow, as part drainage network. Until further research identifies resolves cause inaccuracy samples based only on should used caution.