Different sources and degradation state of dissolved, particulate, and sedimentary organic matter along the Eurasian Arctic coastal margin
作者: Emma KarlssonJohan GeltingTommaso TesiBart DongenAugust AnderssonIgor SemiletovAlexander CharkinOleg DudarevÖrjan Gustafsson
作者单位: 1Department of Environmental Science and Analytical Chemistry Stockholm University Stockholm Sweden
2 Bolin Centre for Climate Research Stockholm University Stockholm Sweden
3 Institute of Marine Sciences ISMAR‐CNR Bologna Italy
4 School of Earth, Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science University of Manchester Manchester UK
5 Pacific Oceanological Institute Russian Academy of Sciences Vladivostok Russia
6 International Arctic Research Center University Alaska Fairbanks Fairbanks Alaska USA
7 National Research Tomsk Polytechnic University Tomsk Russia
刊名: Global Biogeochemical Cycles, 2016, Vol.30 (6), pp.898-919
来源数据库: Wiley Journal
DOI: 10.1002/2015GB005307
关键词: organic mattercoastal Arcticdegradation statebiomarkerscarbon isotopessource apportionment
原始语种摘要: Thawing Arctic permafrost causes massive fluvial and erosional releases of dissolved and particulate organic carbon (DOC and POC) to coastal waters. Here we investigate how different sources and degradation of remobilized terrestrial carbon may affect large‐scale carbon cycling, by comparing molecular and dual‐isotope composition of waterborne high molecular weight DOC (>1 kD, aka colloidal OC), POC, and sedimentary OC (SOC) across the East Siberian Arctic Shelves. Lignin phenol fingerprints demonstrate a longitudinal trend in relative contribution of terrestrial sources to coastal OC. Wax lipids and cutins were not detected in colloidal organic carbon (COC), in contrast to POC and SOC, suggesting that different terrestrial carbon pools partition into different aquatic carrier phases. The...
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关键词翻译
关键词翻译
  • sedimentary 沉积的
  • particulate 粒子
  • matter 物质
  • degradation 减嚣夷酌
  • margin 边限
  • permafrost 永冻土
  • compositional 合成的
  • organic 有机的
  • fluvial 生在河中的
  • carbon