Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3323610h&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 23, CiteID L23610
Mathematics
Logic
1
Geochemistry: Organic And Biogenic Geochemistry, Oceanography: Biological And Chemical: Carbon Cycling (0428), Oceanography: Biological And Chemical: Marine Organic Chemistry (0470, 1050), Oceanography: Biological And Chemical: Radioactivity And Radioisotopes, Oceanography: Biological And Chemical: Stable Isotopes (0454, 1041)
Scientific paper
To study cycling of organic fractions in the ocean, relative abundances and radio- and stable-carbon isotope measurements of total lipid extract, acid-soluble, and acid-insoluble fractions of suspended particulate organic carbon (POC) were made. Changes in relative abundances occurred mostly in the upper 1000 m of the water column, with a decrease in total lipid extract and the acid-soluble fraction and an increase in the acid-insoluble fraction with increasing depth. We found lower Δ14C values for total lipid extract and the acid-insoluble fraction than for the acid-soluble fraction, which is consistent with the previous suggestion of incorporation of dissolved organic carbon and/or resuspended sediment to POC (Druffel and Williams, 1990; Sherrell et al., 1998). The Δ14C values of these fractions in a given organic carbon pool must be understood in terms of acquisition of 14C-depleted carbon from other carbon pools in addition to aging within the reservoir.
Druffel Ellen R. M.
Hwang Jeomshik
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