INFLUENCE OF PHYSICAL STABILITY ON SPRING, SUMMER AND AUTUMN PHYTOPLANKTON BLOOMS IN CELTIC SEA
INFLUENCE OF PHYSICAL STABILITY ON SPRING, SUMMER AND AUTUMN PHYTOPLANKTON BLOOMS IN CELTIC SEA
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DOI：
10.1017/s0025315400020919
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发表时间：
1976-01-01
影响因子：
1.2
通讯作者：
HEAD, RN
中科院分区：
文献类型：
--
作者：
PINGREE, RD;HOLLIGAN, PM;HEAD, RN
浮游植物分布的发展与季节性温跃层的建立和破裂之间存在着相似之处，而季节性温跃层的建立和破裂又主要由潮汐流决定。春季浮游植物爆发是在北凯尔特海（英格兰，爱尔兰）宁菲岸以南的低潮区建立温跃层时首次观察到的。在夏季，在分层良好的陆架水域和更多的沿海地区之间的锋面区域发现了密集的浮游植物华，在这些地区，强烈的潮汐保持了良好的混合条件。在秋季，随着温跃层的消退，又回到了宁弗岸以南的弱潮区。尽管此时地表营养物质的可用性更高，但混合层深度的增加和光照水平的降低不允许如此高的地表叶绿素a值。
A parallel exists between the development of phytoplankton distributions and the establishment and breakdown of the seasonal thermocline, which in turn is determined largely by tidal streaming. The spring phytoplankton outburst was first observed as the thermocline became established in the area of weak tides south of Nymphe bank in the N Celtic Sea [England, Ireland]. In the summer, dense blooms of phytoplankton were found in the frontal regions between well-stratified shelf waters and more coastal areas where strong tides maintained well-mixed conditions. In the autumn the retreating thermocline was followed back to the area of weak tides south of Nymphe bank. Despite the greater availability of surface nutrients at this time, the increased mixed layer depth and the reduced light levels did not permit such high surface chlorophyll a values.