Journal ArticleDOI
Partitioning of organic matter in continental margin sediments among density fractions
Stuart G. Wakeham,Elizabeth A. Canuel,Elizabeth J. Lerberg,Patrice Mason,Troy P. Sampere,Thomas S. Bianchi +5 more
TLDR
In this paper, the authors conducted density fractionations on sediments from diverse margins (Mexico margin, Gulf of Mexico, Mississippi River delta, Eel River margin) to investigate the nature, provenance and age of organic matter (OM) among density fractions.About:
This article is published in Marine Chemistry.The article was published on 2009-08-20. It has received 87 citations till now. The article focuses on the topics: Organic matter & Total organic carbon.read more
Citations
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Journal ArticleDOI
Global carbon export from the terrestrial biosphere controlled by erosion
TL;DR: It is concluded that burial of biospheric POC in marine sediments becomes the dominant long-term atmospheric carbon dioxide sink under enhanced physical erosion.
Journal ArticleDOI
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins.
Xiaojuan Feng,Jorien E. Vonk,Bart E. van Dongen,Örjan Gustafsson,Igor Semiletov,Igor Semiletov,Oleg V. Dudarev,Zhiheng Wang,Daniel B. Montluçon,Lukas Wacker,Timothy I. Eglinton +10 more
TL;DR: By radiocarbon dating various terrestrial OC components in fluvially and coastally integrated estuarine sediments, a unique framework is presented for deconvoluting the contrasting mobilization mechanisms of surface vs. deep (permafrost) carbon pools across the climosequence of the Eurasian Arctic.
Journal ArticleDOI
Centers of organic carbon burial and oxidation at the land-ocean interface
Thomas S. Bianchi,Xingqian Cui,Xingqian Cui,Neal E. Blair,David J. Burdige,Timothy I. Eglinton,Timothy I. Eglinton,Valier Galy +7 more
TL;DR: In this article, a compilation of compositional data from a set of illustrative settings, including fjords, small mountainous river margins, large deltaic systems and upwelling areas, is presented.
Journal ArticleDOI
Composition and fate of terrigenous organic matter along the Arctic land-ocean continuum in East Siberia : Insights from biomarkers and carbon isotopes
Tommaso Tesi,Igor Semiletov,Igor Semiletov,Gustaf Hugelius,Oleg V. Dudarev,Peter Kuhry,Örjan Gustafsson +6 more
TL;DR: In this article, the authors investigated the fate of permafrost carbon along the land-ocean continuum by characterizing the terrigenous organic carbon (TerrOC) composition in three different terrestrial carbon pools from Siberian permfrost (surface organic rich horizon, mineral soil active layer, and ice complex deposit) and marine sediments collected on the extensive East Siberian Arctic Shelf.
Journal ArticleDOI
Bounding cross-shelf transport time and degradation in Siberian-Arctic land-ocean carbon transfer.
Lisa Bröder,Lisa Bröder,Tommaso Tesi,Tommaso Tesi,August Andersson,Igor Semiletov,Igor Semiletov,Örjan Gustafsson +7 more
TL;DR: Using compound-specific radiocarbon dating of terrestrial biomarkers, the authors show that transport across the East Siberian Arctic shelf takes 3600 ± 300 years, which constitutes a carbon source to the atmosphere over millennial time.
References
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Journal ArticleDOI
Geomorphic/Tectonic Control of Sediment Discharge to the Ocean: The Importance of Small Mountainous Rivers
TL;DR: In this paper, data from 280 rivers discharging to the ocean indicates that sediment loads/yields are a log-linear function of basin area and maximum elevation of the river basin.
Journal ArticleDOI
Sedimentary organic matter preservation: an assessment and speculative synthesis
John I. Hedges,Richard G. Keil +1 more
TL;DR: For example, in a recent paper as discussed by the authors, the authors investigated the mechanisms governing sedimentary organic matter preservation in marine sediments and found that organic preservation in the marine environment is < 0.5% efficient, and that the factors which directly determine preservation vary with depositional regime, but have in common a critical interaction between organic and inorganic materials over locally variable time scales.
Journal ArticleDOI
What happens to terrestrial organic matter in the ocean
TL;DR: In this article, the authors focus on the transport and transformations of land-derived organic matter in the ocean, highlighting recent research on the patterns and processes involved in the degradation of terrestrial organic matter.
Journal ArticleDOI
Role of the soil matrix and minerals in protecting natural organic materials against biological attack
Jeff Baldock,Jan O. Skjemstad +1 more
TL;DR: In this paper, the authors consider the stabilisation of organic materials in soils by the soil matrix is a function of the chemical nature of the soil mineral fraction and the presence of multivalent cations.
Journal ArticleDOI
Carbon and nitrogen determinations of carbonate‐containing solids1
John I. Hedges,Jeffrey H. Stern +1 more
TL;DR: In this paper, two methods for determination of organic carbon, inorganic carbon, and total nitrogen in sediments, sediment trap materials, and plankton are described, using an automated CHN analyzer for all elemental determinations.
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Sedimentary organic matter preservation: an assessment and speculative synthesis
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