Mercury in tundra vegetation of Alaska: Spatial and temporal dynamics and stable isotope patterns
作者: Christine L. OlsonMartin JiskraJeroen E. SonkeDaniel Obrist
作者单位: 1Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA
2Geosciences Environnement Toulouse, CNRS/OMP/Université de Toulouse, 14 Avenue Edouard Belin, 31400 Toulouse, France
3Environmental Geosciences, University of Basel, Bernoullistrasse 30, 4056 Basel, Switzerland
4Department of Environmental, Earth, and Atmospheric Sciences, University of Massachusetts, Lowell, MA, USA
刊名: Science of the Total Environment, 2019, Vol.660 , pp.1502-1512
来源数据库: Elsevier Journal
DOI: 10.1016/j.scitotenv.2019.01.058
关键词: TundraVegetationMercuryStable Hg isotopesArcticAlaska
英文摘要: Abstract(#br)Vegetation uptake of atmospheric mercury (Hg) is an important mechanism enhancing atmospheric Hg deposition via litterfall and senescence. We here report Hg concentrations and pool sizes of different plant functional groups and plant species across nine tundra sites in northern Alaska. Significant spatial differences were observed in bulk vegetation Hg concentrations at Toolik Field station (52 ± 9 μg kg −1 ), Eight Mile Lake Observatory (40 ± 0.2 μg kg −1 ), and seven sites along a transect from Toolik Field station to the Arctic coast (36 ± 9 μg kg −1 ). Hg concentrations in non-vascular vegetation including feather and peat moss (58 ± 6 μg kg −1 and 34 ± 2 μg kg −1 , respectively) and brown and white lichen (41 ± 2 μg kg −1 and 34 ± 2 μg kg −1 , respectively), were three...
全文获取路径: Elsevier  (合作)
影响因子:3.258 (2012)

  • 动力学 冻原
  • Mercury 水星水银
  • Alaska 阿拉斯加
  • temporal 现世的
  • stable 稳定的
  • tundra 冻原
  • dynamics 冻原
  • vegetation 植被