Nitrogen isotope signature variability in plant species from open peatland
作者: Taro AsadaBarry G. WarnerRamon Aravena
作者单位: 1Wetlands Research Centre, University of Waterloo, Waterloo, Ont., Canada N2L 3G1
刊名: Aquatic Botany, 2005, Vol.82 (4), pp.297-307
来源数据库: Elsevier Journal
DOI: 10.1016/j.aquabot.2005.05.005
关键词: PeatlandSphagnumNitrogen sourceStable isotopeδ 15 N
原始语种摘要: Abstract(#br)We report natural abundance of 15 N content in a suite of plants and lichens from a sloping open peatland in coastal northern British Columbia, Canada. A wide range of δ 15 N values varying between −11 and +3‰ were observed in the studied species. Herbs, mosses, and shrubs generally grouped individually along the δ 15 N gradient from enriched to more depleted values. This grouping probably reflects similar nitrogen acquiring strategies within the group, but some species with different strategies showed deviated δ 15 N values from the cluster. Hummock-lawn gradient, which is illustrated as depth to water table, explains the variation in δ 15 N signature of cryptogams: the deeper the groundwater table, the more depleted is the 15 N. This trend might be explained by differences...
全文获取路径: Elsevier  (合作)
影响因子:1.593 (2012)

  • peatland 泥炭地
  • nitrogen 
  • species 
  • values 价值观
  • table 
  • illustrated 以…说明
  • plant 植物
  • signature 签名
  • studied 学习
  • range 射程