Assessing zooplankton advection in the Barents Sea using underway measurements and modelling
Assessing zooplankton advection in the Barents Sea using underway measurements and modelling
复制标题
DOI：
10.1046/j.1365-2419.2003.00219.x
复制
发表时间：
2003-01-01
影响因子：
2.6
通讯作者：
Jaccard, P
中科院分区：
文献类型：
--
作者：
Edvardsen, A;Slagstad, D;Jaccard, P
挪威北部和巴伦支海的沿海大陆架是高度平流的，主要受北大西洋洋流和挪威海岸洋流的影响。海洋条件是影响该地区浮游动物时空分布的重要因素。为了量化巴伦支海西部边界浮游动物平流，采用了扫描鱼/光学浮游动物计数器（OPC）、声学多普勒流廓仪（ADCP）、多重开闭网和环境采样系统（monness）和水动力模型。本研究提供了两个时间窗口（1998年6月和7月）在挪威北部和熊岛之间的连续测量数据。利用净拖曳法获得浮游动物群落结构，利用OPC对0.7 ~ 14 mm等效球直径范围内的浮游动物进行计数，绘制浮游动物丰度场图。浮游动物群落结构简单，优势种为桡足类Calanus finmarchicus （CIII-CV）。用船载ADCP测量海流，用水动力模型减去潮汐分量计算剩余海流。1998年6月和7月进行的两次测量显示，该路段的净向东输送水量为3.5和1.3斯维德鲁普。在相同的两个时期，浮游动物生物量向东迁移也是正的，但在两个测量值之间变化了两个数量级。
The coastal shelf of northern Norway and the Barents Sea is highly advective and mainly affected by the North Atlantic Current and the Norwegian Coastal Current. The oceanographic conditions are an important factor for the spatial and temporal distribution of zooplankton in the region. To quantify zooplankton advection over the western border of the Barents Sea, a Scanfish/Optical Plankton Counter (OPC), Acoustic Doppler Current Profiler (ADCP), Multiple Opening and Closing Nets and Environmental Sampling System (MOCNESS), and hydrodynamic model were used. This study provides data from two time windows (June and July 1998) by continuous measurements between northern Norway and Bear Island. The zooplankton community structure was obtained by net tows and zooplankton abundance fields were mapped by an OPC counting zooplankton in the size range 0.7-14 mm equivalent spherical diameter. A simple zooplankton community structure was found with the copepod Calanus finmarchicus (CIII-CV) as the dominant species in this size fraction. Ocean currents were measured by a ship-mounted ADCP and the residual currents were calculated by subtracting the tidal component obtained from a hydrodynamic model. Two measurements conducted in June and July 1998 shows a net eastward transport of water of 3.5 and 1.3 Sverdrup over the section. For the same two periods, zooplankton biomass transport is also positive towards east but varies by two orders of magnitude between the two measurements.