Observations and simulations of hydrography, nutrients and plankton in the southern North Sea
Observations and simulations of hydrography, nutrients and plankton in the southern North Sea
复制标题
北海南部水文、营养物和浮游生物的观测和模拟
DOI：
10.1080/00785326.1995.10431514
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Walne
中科院分区：
文献类型：
--
作者：
P. Tett;A. Walne
北海南部的大部分地区都很浅。强烈的潮汐搅动会阻碍分层，并通过沉积物再悬浮增加浊度。因此，浮游植物的生长往往是在这一地区的光控制，虽然河流营养物增加生产和最大生物量的沃茨靠近大陆海岸，其中棕囊藻和小型桡足类是常见的。在北部较深的沃茨，季节性分层产生了浮游生物的“教科书”式年度循环，春季水华之后是一段严重的营养耗竭时期。这些点说明了1988年至1989年在北海南部的重复调查的结果，并使用一个简单的数学模型进一步检查。观测和数值模拟是用来提供洞察氮循环和富营养化的潜力，这是最大的中间潮汐搅拌的地区，并支持讨论所需要的模型，如果他们是准确地模拟养分循环。
Abstract Much of the southern North Sea is shallow. Strong tidal stirring opposes stratification, and increases turbidity through sediment resuspension. Consequently, phytoplankton growth is often lightcontrolled in this region, although riverine nutrients increase production and maximum biomass in waters near the continental coast, where Phaeocystis and small copepods are common. In deeper waters to the north, seasonal stratification gives rise to a ‘text-book’ annual cycle of plankton, with the spring bloom followed by a period of severe nutrient depletion. These points are illustrated with results from repeated surveys of the southern North Sea in 1988–89, and further examined using a simple mathematical model. Observations and numerical simulations are used to provide insights into nitrogen cycling and eutrophication potential, which are greatest in regions of intermediate tidal stirring, and to support a discussion of what is needed by models if they are accurately to simulate nutrient cycling.