Export fluxes in a naturally iron-fertilized area of the Southern Ocean – Part 1: Seasonal dynamics of particulate organic carbon export from a moored sediment trap
Export fluxes in a naturally iron-fertilized area of the Southern Ocean – Part 1: Seasonal dynamics of particulate organic carbon export from a moored sediment trap
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南大洋天然铁肥沃区的输出通量 - 第 1 部分：系泊沉积物捕集器中颗粒有机碳输出的季节动态
DOI：
10.5194/bg-12-3153-2015
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发表时间：
2015
期刊：
影响因子：
4.9
通讯作者：
S. Blain
中科院分区：
文献类型：
--
作者：
M. Rembauville;I. Salter;N. Leblond;A. Guéneuguès;S. Blain
抽象的。一个沉积物捕集器停泊在自然铁肥Kerguelen高原在南大洋提供了一个年度记录的颗粒有机碳和氮通量在289米。在陷阱部署深度，流速通常较低（~ 10 cm s−1），主要由潮汐驱动（M2潮汐分量）。虽然平流是弱的，沉积物陷阱可能已受到流体动力学和生物（游泳饲料陷阱漏斗）的偏见。颗粒有机碳（POC）通量一般较低（2公里）通量测量类似生产铁施肥开花。虽然不能排除在浅系泊沉积物捕集器部署下陷，我们假设放牧压力，包括浮游动物和中层鱼类，可能是负责冬季混合层的基础下的POC通量低。浮游生物群落结构在控制输出通量的时间变化方面的重要性在一份配套文件中讨论。
Abstract. A sediment trap moored in the naturally iron-fertilized Kerguelen Plateau in the Southern Ocean provided an annual record of particulate organic carbon and nitrogen fluxes at 289 m. At the trap deployment depth, current speeds were typically low (~ 10 cm s−1) and primarily tidal-driven (M2 tidal component). Although advection was weak, the sediment trap may have been subject to hydrodynamical and biological (swimmer feeding on trap funnel) biases. Particulate organic carbon (POC) flux was generally low ( 2 km) fluxes measured from similarly productive iron-fertilized blooms. Although undertrapping cannot be excluded in shallow moored sediment trap deployment, we hypothesize that grazing pressure, including mesozooplankton and mesopelagic fishes, may be responsible for the low POC flux beneath the base of the winter mixed layer. The importance of plankton community structure in controlling the temporal variability of export fluxes is addressed in a companion paper.
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影响因子：
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