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学科主题: Ecology ; Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
题名: Phytoplankton community structure shaped by key environmental factors in fish and shellfish farms in Daya Bay, South China
作者: [Zhang, Xia ; Huang, Xiaoping ; Huang, Liangmin] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
通讯作者: xphuang@scsio.ac.cn
关键词: aquaculture ; natural forces ; phytoplankton seasonal dynamics ; PCR analysis
刊名: AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
发表日期: 2013
卷: 16, 期:3, 页:300-310
部门归属: LMB
资助者: This study was supported by the National Natural Science Foundation of China (No. 31000185, 41076069), the project of knowledge innovation program of the South China Sea Institute of Oceanology (No. LYQY 200706) and Key Science and Technology Project of Guangdong Province (No. 2007A03260004, A3050301). The authors thank Y. H. Peng, Z. H. Zhu, L. Y. Xiao, J. L. Zhang and Z. Z. Xu for help in field and laboratory work.
摘要: In coastal cultural regions of Dapeng Cove (southwest of Daya Bay), the composition, abundance and community structure of phytoplankton, as well as physicochemical variables, were investigated to identify factors driving seasonal changes. During summer, local phytoplankton biomass was low, probably because of nutrient depletion. In September, sudden heavy rainfalls resulted in a substantial increase in nitrogen. As a result, a disturbance-tolerant diatom, Skeletonema costatum, increased rapidly. Organic matter associated with freshwater runoff, fishery activities and settled algal cells increased consumption of dissolved oxygen (DO), especially in fish farms. It was suggested that heavy rainfall events was probably a trigger of low oxygen level and exerted a major effect on nutrient cycling and the phytoplankton community. In winter, phytoplankton community was characterized by dinoflagellates, which are adapted to well-mixed conditions. Spring blooms composed of Pseudonitzschia delicatissima and P. pungens were triggered by warm temperature and increasing light intensity. Excessive ammonium levels in March probably contributed to bloom initiation. Dissolved inorganic nitrogen (DIN) and total phosphorus (TP) concentrations in fish farms were significantly higher than that in bivalve cultures and control sites although phytoplankton abundance in fish farms was not. We suggest that intense fish culture farming exerts more pressure on the ambient environment than shellfish farming.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000328473600008
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11009
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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[Zhang, Xia; Huang, Xiaoping; Huang, Liangmin] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China.Phytoplankton community structure shaped by key environmental factors in fish and shellfish farms in Daya Bay, South China,AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,2013,16(3):300-310
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