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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Seawater carbon measurement

Article Abstract:

The hot-temperature catalytic oxidation (HTCO) method for determining the carbon content of seawater involves the use of blanks that may account for variations between HTCO's measurements and those obtained by another method, wet chemical oxidation (WCO). In addition, these blanks may account for the seemingly low molecular mass fraction for WCO-resistant water. However, the ambiguity in measuring carbon content may actually derive from variations in the scale of blanks in HTCO instruments and from how measurements are adjusted for the blanks.

Author: Hedges, John I., Bergamaschi, Brian A., Ogawa, H., Ogura, N.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
Environmental aspects, Composition, Sea-water, Seawater, Chemical oceanography

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Influence of oxygen exposure time on organic carbon preservation in continental margin sediments

Article Abstract:

More than 90% of organic carbon burial in the ocean happens in the continental margin sediments. It is linked to the cycling of elements such as N, P, S, Fe and Mn, and controls atmospheric oxygen content. There is debate about the processes that rule sedimentary organic carbon preservation. Analyses of sediments underlying two areas of the eastern North Pacific Ocean were compared. Organic carbon burial efficiency was strongly linked to the amount of time accumulating particles are exposed to molecular oxygen in the sediment pore waters.

Author: Devol, Allan H., Hedges, John I., Keil, Richard G., Hartnett, Hilary E.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
Observations, Sediments (Geology), Continental margins

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Reburial of fossil organic carbon in marine sediments

Article Abstract:

An interpretation of the marine sediments act as the ultimate sink for organic carbon is discussed. Further understanding about the transport and distribution of black carbon is also given.

Author: Gelinas, Yves, Hedges, John I., Dickens, Angela F., Masiello, Caroline, Wakeham, Stuart
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
Science & research, Marine sediments, Extraction (Chemistry), Carbon fixation

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Subjects list: Research, Carbon
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