Tempo-spatial Variation of Nutrient and Chlorophyll-a Concentrations From Summer to Winter in the Zhangzi Island Area (Northern Yellow Sea)

IOCAS-IR

	Tempo-spatial Variation of Nutrient and Chlorophyll-a Concentrations From Summer to Winter in the Zhangzi Island Area (Northern Yellow Sea)
	YIN Jiehui ; ZHAO Zengxia ; ZHANG Guangtao; WANG Shiwei ; WAN Aiyong
发表期刊	Journal of Ocean University of China
ISSN	1672-5182
	2013-09-06
出版年	2013
卷号	v.12 期号:03 页码:59-70
文献类型	CNKI期刊论文
摘要	Nutrient and Chlorophyll-a(Chl-a) concentrations were investigated monthly along three transects extending from a mariculture area to open waters around the Zhangzi Island area from July to December 2009.The objective of this study is to illustrate food availability to the bottom-sowed scallop Patinopecten yessoensis under the influences of the Yellow Sea Cold Water Mass(YSCWM),freshwater input and feedbacks of cultivated scallops.Significant thermal stratification was present in open waters from July to October,and salinity decreased in July and August in surface layers in the mariculture area.Nutrient concentrations increased with depth in both areas in summer,but were similar through water column in November and December.On average,nutrient increased from summer to autumn in all components except ammonia.Nutrient concentrations lower than the minimum thresholds for phytoplankton growth were present only in upper layers in summer,but stoichiometric nitrogen limitation existed in the entire investigation period.Column-averaged Chl-a concentration was lower in open waters than in mariculture area in all months.It increased significantly in mariculture area in August and October,and was less variable in open waters.Our results show that nutrients limitation to phytoplankton growth is present mainly in upper layer in association with stratification caused by YSCWM in summer.Freshwater input and upwelling of nutrients accumulated in YSCWM can stimulate phytoplankton production in mariculture area.Farming activities may change stoichiometric nutrient ratios but have less influence on Chl-a concentration.
关键词	Zhangzi Island Chlorophyll-a nutrients scallop farming the Yellow Sea Cold Water Mass
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S917.3
语种	英文;
资助项目(基金）	financially supported by the Knowledge Innovation Program of Chinese Academy of Sciences ; the Science and Technology Ministry of China(No.2011CB403604) ; the IOCAS-Zhangzidao Fishery Eco-Mariculture Joint Laboratory
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190767
专题	中国科学院海洋研究所
作者单位	1.JiaozhouBayMarineEcosystemResearchStation,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences
推荐引用方式 GB/T 7714	YIN Jiehui,ZHAO Zengxia,ZHANG Guangtao,et al. Tempo-spatial Variation of Nutrient and Chlorophyll-a Concentrations From Summer to Winter in the Zhangzi Island Area (Northern Yellow Sea). 2013.