Major flux of terrigenous dissolved organic matter through the Arctic Ocean

  title={Major flux of terrigenous dissolved organic matter through the Arctic Ocean},
  author={Stephen P. Opsahl and Ronald Benner and Rainer M. W. Amon},
  journal={Limnology and Oceanography},
High‐latitude rivers supply the Arctic Ocean with a disproportionately large share of global riverine discharge and terrigenous dissolved organic matter (DOM). We used the abundance of lignin, a macromolecule unique to vascular plants, and stable carbon isotope ratios (δ13C) to trace the high molecular weight fraction of terrigenous DOM in major water masses of the Arctic Ocean. Lignin oxidation products in ultrafiltered DOM (UDOM; >1,000 Da) from Arctic rivers were depleted in syringyl… 

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