Persistent organic matter in oxic subseafloor sediment
Persistent organic matter in oxic subseafloor sediment
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DOI：
10.1038/s41561-018-0291-5
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发表时间：
2019-02-01
影响因子：
18.3
通讯作者：
Hansel, Colleen M.
中科院分区：
文献类型：
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作者：
Estes, Emily R.;Pockalny, Robert;Hansel, Colleen M.
全球近一半的海底被沉积物所覆盖，这些沉积物充氧到了地下室。然而，尽管有氧气可以为有氧呼吸提供燃料，但有机碳仍会持续存在数百万年的时间尺度。确定有机碳保存的控制措施需要更好地了解深层寡营养海洋沉积物中有机碳的组成和分布。在这里，我们表明来自贫营养的北大西洋和南太平洋沉积物中的有机碳含量较低（
Nearly half of the global seafloor is overlain by sediment oxygenated to the basement. Yet, despite the availability of oxygen to fuel aerobic respiration, organic carbon persists over million-year timescales. Identifying the controls on organic carbon preservation requires an improved understanding of the composition and distribution of organic carbon within deep oligotro-phic marine sediments. Here we show that organic carbon in sediment from the oligotrophic North Atlantic and South Pacific is low (