Lipid-like material as the source of the uncharacterized organic carbon in the ocean?

被引：79

作者：

Hwang, JS ^{[1
]}

Druffel, ERM ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA

来源：

SCIENCE | 2003年 / 299卷 / 5608期

关键词：

D O I：

10.1126/science.1078508

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The composition and formation mechanisms of the uncharacterized fraction of oceanic particulate organic carbon (POC) are not well understood. We isolated biologically important compound classes and the acid-insoluble fraction, a proxy of the uncharacterized fraction, from sinking POC in the deep Northeast Pacific and measured carbon isotope ratios to constrain the source(s) of the uncharacterized fraction. Stable carbon and radiocarbon isotope signatures of the acid-insoluble fraction were similar to those of the lipid fraction, implying that the acid-insoluble fraction might be composed of selectively accumulated lipid-like macromolecules.

引用

页码：881 / 884

页数：4

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