What happens to terrestrial organic matter in the ocean?
What happens to terrestrial organic matter in the ocean?
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DOI：
10.1016/j.marchem.2004.06.033
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发表时间：
2004-12-01
期刊：
影响因子：
3
通讯作者：
Benner, R
中科院分区：
文献类型：
--
作者：
Benner, R
这次会议的标题是，海洋中的陆地有机物会发生什么？直接来自Hedges等人发表的一篇论文的标题。（1997），并继续成为一个伟大的讨论的主题。从陆地环境到海洋环境的有机物质（~ 0.5 Pg C）的年通量是相当大的，是全球碳和其他生物活性元素循环的重要组成部分。约翰·赫奇斯（John Hedges）在20世纪70年代初首次思考海洋中陆地有机物的命运，当时他是德克萨斯州阿兰萨斯港德克萨斯大学海洋科学研究所的研究生。作为一名学生，John开发了使用木质素衍生的酚作为陆生植物的独特生物标志物的方法（Hedges，1975; Hedges和帕克，1976）。他研究了墨西哥湾沉积物中陆地有机碳（TOC）的丰度和分布，使用木质素酚与大量稳定的碳同位素作为TOC的示踪剂。他开创性地将木质素酚作为陆地物质的生物标志物，这是他毕生追求的开始。John的研究，以及其他许多人使用各种方法的研究，得出了一个普遍的结论，即从河流排放的TOC的很大一部分在海洋边缘被同化（Hedges等人，1997年）。
The title of this session, What happens to terrestrial organic matter in the ocean? comes directly from the title of a paper published by Hedges et al.(1997) and continues to be a topic of great discussion. The annual flux of organic matter (~ 0.5 Pg C) from the terrestrial to marine environment is substantial and an important component of the global cycles of carbon and other bioactive elements. John Hedges first pondered the fate of terrestrial organic matter in the ocean in the early 1970s as a graduate student at the University of Texas Marine Science Institute in Port Aransas, Texas. As a student, John developed methods for using lignin-derived phenols as unique biomarkers of terrestrial plants (Hedges, 1975; Hedges and Parker, 1976). He investigated the abundance and distribution of terrestrial organic carbon (TOC) in Gulf of Mexico sediments using lignin phenols in combination with bulk stable C isotopes as tracers of TOC. His pioneering application of lignin phenols as biomarkers of terrestrial material was the beginning of a lifelong pursuit. John’s studies, as well as those of many others using a variety of approaches, lead to the general conclusion that a large fraction of the TOC discharged from rivers is remineralized within ocean margins (Hedges et al., 1997).