Influences of physical processes on the ecosystem in Jiaozhou Bay: A coupled physical and biological model experiment

	Influences of physical processes on the ecosystem in Jiaozhou Bay: A coupled physical and biological model experiment
	Chen, CS ; Ji, RB ; Zheng, LY ; Zhu, MY ; Rawson, M
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	1999-12-15
卷号	104 期号:C12 页码:29925-29949
ISSN号	0148-0227
英文摘要	In this paper we have used a three-dimensional coupled physical and biological model to examine the marine ecosystem of Jiaozhou Bay. Physical processes included (1) the M-2 tide, (2) river discharges, and (3) winds. The biological model described a simple, phosphorous-based, lower trophic food web system. The model results showed that tidal mixing had a direct impact on temporal and spatial distributions of nutrients and phytoplankton as well as on shellfish aquaculture. Nutrients and phytoplankton were well mixed vertically by tidal motion. Their concentrations were highest around northwestern and northern regions of the bay near river sources and decreased with water depth from the inner bay to the outer bay. A phytoplankton bloom can occur around the northwestern coast due to the "accumulation" of nutrients under southeasterly wind conditions. The flux analysis suggests that in summer the nutrients in Jiaozhou Bay was directly supplied and maintained by physical processes, but the temporal variation of phytoplankton was controlled dominantly by biological processes associated with nutrient uptake, grazing by zooplankton, and consumption by shellfish. Shellfish aquaculture can modify the bay-scale balance of the ecosystem in Jiaozhou Bay, The loss of phytoplankton in shellfish aquaculture sites tended to be compensated by advection and diffusion from the surrounding waters. A large consumption of phytoplankton by shellfish can cause a net flux of phytoplankton from the Yellow Sea to Jiaozhou Bay, although there was a net nutrient flux flowing out of the bay. The physical mechanism for the water exchange between Jiaozhou Bay and the Yellow Sea was controlled mainly by a chaotic process associated with nonlinear interactions between oscillating tidal currents and double residual eddies.
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000084399600024
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4905]
专题	自然资源部第一海洋研究所
作者单位	1.Univ Georgia, Sch Marine Programs, Athens, GA 30602 USA; 2.Statae Ocean Adm, Inst Oceanog 1, Qingdao 266003, Peoples R China; 3.Univ Georgia, Dept Marine Sci, Athens, GA 30602 USA
推荐引用方式 GB/T 7714	Chen, CS,Ji, RB,Zheng, LY,et al. Influences of physical processes on the ecosystem in Jiaozhou Bay: A coupled physical and biological model experiment[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,1999,104(C12):29925-29949.
APA	Chen, CS,Ji, RB,Zheng, LY,Zhu, MY,&Rawson, M.(1999).Influences of physical processes on the ecosystem in Jiaozhou Bay: A coupled physical and biological model experiment.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,104(C12),29925-29949.
MLA	Chen, CS,et al."Influences of physical processes on the ecosystem in Jiaozhou Bay: A coupled physical and biological model experiment".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 104.C12(1999):29925-29949.