The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard
The Influence of Sea Ice Cover and Atlantic Water Advection on Annual Particle Export North of Svalbard
复制标题
海冰覆盖和大西洋水平流对斯瓦尔巴群岛北部年度颗粒输出的影响
作者：
Dybwad C
斯瓦尔巴特群岛以北的北冰洋最近经历了大规模的海冰损失和日益突出的大西洋水（AW）平流。为了调查这些持续变化对年度颗粒输出的影响，在斯瓦尔巴群岛大陆架北部（NSv）和东部（ESv）的无冰和季节性冰覆盖的沃茨部署了两个带有连续沉积物捕集器的系泊装置，从2017年10月到2018年10月几乎连续收集沉降颗粒。垂直输出的颗粒有机碳（POC），总颗粒物（TPM），浮游原生生物，叶绿素，和浮游动物粪便颗粒进行了测量，和游泳者进行了量化和鉴定。结合来自系泊设备的传感器数据，这些时间序列测量提供了对北冰洋这一区域影响颗粒输出的因素的首次评估。无冰NSv站点较高的年度TPM和POC通量主要是由AW的平流、大型桡足类较高的放牧以及冬季风引起的混合事件驱动的。较高的硅藻通量在春季在海冰的存在下，在ESV网站。沿着海冰覆盖，在AW平流和季节性存在的食草动物的区域差异发挥了突出的作用，生物碳泵沿着斯瓦尔巴特群岛大陆架。
The Arctic Ocean north of Svalbard has recently experienced large sea ice losses and the increasing prominence of Atlantic water (AW) advection. To investigate the impact of these ongoing changes on annual particle export, two moorings with sequential sediment traps were deployed in ice‐free and seasonally ice‐covered waters on the shelf north (NSv) and east (ESv) of Svalbard, collecting sinking particles nearly continuously from October 2017 to October 2018. Vertical export of particulate organic carbon (POC), total particulate matter (TPM), planktonic protists, chlorophylla, and zooplankton fecal pellets were measured, and swimmers were quantified and identified. Combined with sensor data from the moorings, these time‐series measurements provided a first assessment of the factors influencing particle export in this region of the Arctic Ocean. Higher annual TPM and POC fluxes at the ice‐free NSv site were primarily driven by the advection of AW, higher grazing by large copepods, and a wind‐induced mixing event during winter. Higher diatom fluxes were observed during spring in the presence of sea ice at the ESv site. Along with sea ice cover, regional differences in AW advection and the seasonal presence of grazers played a prominent role in the biological carbon pump along the continental shelf off Svalbard.
登录
查看更多内容
影响因子：
5.9
作者：
Edwards M;Hélaouët P;Goberville E;Lindley A;Tarling GA;Burrows MT;Atkinson A
通讯作者：
Atkinson A
浮游植物平流对大西洋流入北冰洋沿岸生产力的影响
影响因子：
3.7
作者：
M. Vernet;I. Ellingsen;Lena Seuthe;D. Slagstad;M. Cape;P. Matrai
通讯作者：
P. Matrai
在为期 12 天的沉积物捕集器研究中，棕囊藻的下沉有限
影响因子：
4.9
作者：
C. Wolf;M. Iversen;C. Klaas;Katja Metfies
通讯作者：
Katja Metfies
北极盆地底栖生物的食物是什么？
影响因子：
3.7
作者：
I. Wiedmann;E. Ershova;B. Bluhm;E. Nöthig;R. Gradinger;K. Kosobokova;A. Boetius
通讯作者：
A. Boetius
活磷虾、浮游动物和实验研究：关于磷虾及其在海洋生态学中的实验研究的作用的论述
DOI：
--
发表时间：
2003
期刊：
影响因子：
--
作者：
S. Nicol
通讯作者：
S. Nicol