Major flux of terrigenous dissolved organic matter through the Arctic Ocean

@article{Opsahl1999MajorFO,
  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},
  year={1999},
  volume={44}
}
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… 

Evidence for terrigenous dissolved organic nitrogen in the Arctic deep sea

The model presented here provides the first direct evidence of terrigenous DON in the deep sea and may be directly applied to trace the fate of ter Rigorous dissolved organic nitrogen in other terrestrially dominated marine environments.

Terrigenous dissolved organic matter in the Arctic Ocean and its transport to surface and deep waters of the North Atlantic

Surface waters of the Arctic Ocean have the highest concentrations of dissolved organic carbon (DOC) and terrigenous dissolved organic matter (DOM) of all ocean basins. Concentrations of dissolved

Flux and Seasonality of Dissolved Organic Matter From the Northern Dvina (Severnaya Dvina) River, Russia

Pan‐Arctic riverine dissolved organic carbon (DOC) fluxes represent a major transfer of carbon from land‐to‐ocean, and past scaling estimates have been predominantly derived from the six major Arctic

A novel molecular approach for tracing terrigenous dissolved organic matter into the deep ocean

Marine dissolved organic matter (DOM) contains one of the largest exchangeable organic carbon pools on Earth. Riverine input represents an important source of DOM to the oceans, yet much remains to

Export of young terrigenous dissolved organic carbon from rivers to the Arctic Ocean

Soils in the drainage basins of Arctic rivers are a major global reservoir of aged organic carbon. The fate of this old carbon is of growing concern as the effects of climate change become more

The fate of terrigenous dissolved organic carbon on the Eurasian shelves and export to the North Atlantic

Dissolved lignin phenols, chromophoric dissolved organic matter (CDOM) absorption, and fluorescence were analyzed along cross-slope mooring locations in the Barents, Laptev, and East Siberian Seas to

Degradation of Terrigenous Dissolved Organic Carbon in the Western Arctic Ocean

Using isotopic tracers of water-mass age, it is determined that terrigenous dissolved organic carbon is mineralized with a half-life of 7.1 ± 3.0 years, thus allowing only 21 to 32% of it to be exported to the North Atlantic Ocean.
...

References

SHOWING 1-10 OF 44 REFERENCES

Distribution and cycling of terrigenous dissolved organic matter in the ocean

Terrigenous dissolved organic matter (DOM) is continuously discharged by rivers into the ocean, yet its distribution and reactivity within ocean basins remain poorly defined aspects of the global

A sediment and organic carbon budget for the Canadian Beaufort Shelf

Cycling of dissolved and particulate organic matter in the open ocean

Author(s): Druffel, Ellen R. M; Williams, Peter M; Bauer, James E; Ertel, John R | Abstract: Radiocarbon (Δ14C), δ13C, bulk carbon and organic constituent concentration measurements are presented for

Carbon cycling in the Amazon River: Implications from the 13C compositions of particles and solutes

The 13C:12C of suspended particu-late organic C (POC), dissolved organic C (DOC), and dissolved inorganic C (DIC) were measured during 1982–1984 at 11 main-channel and 7 tributary stations over an

Photochemical reactivity of dissolved lignin in river and ocean waters

The photochemical reactivity of dissolved lignin and photobleaching of dissolved organic matter (DOM) were examined in riverine and open‐ocean water samples. Approximately 75% of the total dissolved

A carbon budget for the Arctic Ocean

We present a carbon budget for the Arctic Ocean that is based on estimates of water mass transformation and transport. The budget is constrained by conservation of mass and salt. In the model, the