On the proportion of ballast versus non‐ballast associated carbon export in the surface ocean
On the proportion of ballast versus non‐ballast associated carbon export in the surface ocean
复制标题
表层海洋中压载物与非压载物相关碳输出的比例
DOI：
10.1029/2012gl052980
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发表时间：
2012
影响因子：
5.2
通讯作者：
S. Thomalla
中科院分区：
文献类型：
--
作者：
Frédéric A. C. Le Moigne;R. Sanders;M. Villa;Adrian P. Martin;K. Pabortsava;H. Planquette;P. Morris;S. Thomalla
生物矿物在推动表层海洋碳输出方面的作用尚不清楚。我们编制了大西洋和南大洋 55 个不同地点的表面颗粒有机碳 (POC) 和矿物压载出口通量。大量的表面 POC 出口伴随着微不足道的矿物出口，这意味着与矿物相的结合并不是有机出口发生的先决条件。非矿物相关的下沉 POC 的比例范围为 0% 至 80%，并且在先前显示以硅藻为主的区域中最高。这与之前的估计一致，表明这些地区的转移效率较低。然而，我们认为，硅藻华产生的低转移效率本质上不是由于包装不良的聚集体而导致的，这些聚集体可以有效地输出，但在中层水中容易分解，而是由于这种环境具有非常高水平的无压载有机碳输出。
The role of biominerals in driving carbon export from the surface ocean is unclear. We compiled surface particulate organic carbon (POC), and mineral ballast export fluxes from 55 different locations in the Atlantic and Southern Oceans. Substantial surface POC export accompanied by negligible mineral export was recorded implying that association with mineral phases is not a precondition for organic export to occur. The proportion of non‐mineral associated sinking POC ranged from 0 to 80% and was highest in areas previously shown to be dominated by diatoms. This is consistent with previous estimates showing that transfer efficiency in such regions is low. However we propose that, rather than the low transfer efficiency arising from diatom blooms being inherently characterized by poorly packaged aggregates which are efficiently exported but which disintegrate readily in mid water, it is due to such environments having very high levels of unballasted organic C export.
影响因子：
5.2
作者：
Henson, Stephanie A.;Sanders, Richard;Madsen, Esben
通讯作者：
Madsen, Esben