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[1] We examined the age and structural composition of dissolved organic carbon (DOC) transported in the Kolyma River, two large tributaries and several small upland and lowland streams in 2003. The sampling took place under ice through the winter and included the spring flood period. Radiocarbon mea...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.420.2818 2023-05-15T17:05:08+02:00 Click Here for Full Article J. C. Finlay S. A. Zimov S. P. Davydov J. J. Carrasco The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2818 http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2818 http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf text ftciteseerx 2016-01-08T03:59:08Z [1] We examined the age and structural composition of dissolved organic carbon (DOC) transported in the Kolyma River, two large tributaries and several small upland and lowland streams in 2003. The sampling took place under ice through the winter and included the spring flood period. Radiocarbon measurements of the DOC indicated that the bulk of the annual DOC flux was modern in origin (D 14 C> 100%) and pyrolysis-gas chromatography/mass spectroscopy techniques showed high concentration of terrestrial lignin monomers consistent with vigorous leaching of surface horizons during the spring thaw. By September 2003 however, little terrestrial lignin was present and the radiocarbon age became significantly older (D 14 C< 0%) indicating that the mechanism of DOC generation transitions from surface to deeper soils or other terrestrial sources of old, previously stabilized C. Citation: Neff, J. C. Text kolyma river Unknown Kolyma ENVELOPE(161.000,161.000,69.500,69.500) |
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English |
description |
[1] We examined the age and structural composition of dissolved organic carbon (DOC) transported in the Kolyma River, two large tributaries and several small upland and lowland streams in 2003. The sampling took place under ice through the winter and included the spring flood period. Radiocarbon measurements of the DOC indicated that the bulk of the annual DOC flux was modern in origin (D 14 C> 100%) and pyrolysis-gas chromatography/mass spectroscopy techniques showed high concentration of terrestrial lignin monomers consistent with vigorous leaching of surface horizons during the spring thaw. By September 2003 however, little terrestrial lignin was present and the radiocarbon age became significantly older (D 14 C< 0%) indicating that the mechanism of DOC generation transitions from surface to deeper soils or other terrestrial sources of old, previously stabilized C. Citation: Neff, J. C. |
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J. C. Finlay S. A. Zimov S. P. Davydov J. J. Carrasco |
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J. C. Finlay S. A. Zimov S. P. Davydov J. J. Carrasco Click Here for Full Article |
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J. C. Finlay S. A. Zimov S. P. Davydov J. J. Carrasco |
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J. C. Finlay |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2818 http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Kolyma |
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Kolyma |
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kolyma river |
genre_facet |
kolyma river |
op_source |
http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2818 http://www.lter.uaf.edu/pdf/1228_Neff_Finlay_2006.pdf |
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1766059542575054848 |