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学科主题: Geosciences, Multidisciplinary; Marine & Freshwater Biology; Oceanography
题名: Small scale retentive structures and Dinophysis
作者: Xie, HQ ; Lazure, P ; Gentien, P
通讯作者: hongqinxie99@hotmail.com ; plazure@ifremer.fr
关键词: Dinophysis ; prediction ; rare species ; eddy ; 3D hydrodynamical model ; Bay of Biscay
刊名: JOURNAL OF MARINE SYSTEMS
发表日期: 2007
卷: 64, 期:40547, 页:173-188
收录类别: sci
部门归属: IFREMER, Ctr Brest, Plouzane, France; Chinese Acad Sci, LED, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
项目归属: LED
摘要: Despite its rarity, Dinophysis acuminata is in terms of economic impact, the first toxic algal species along the coasts of Western Europe. It is observed at low levels (< 20 cell l(-1)) all the year round but toxic events occur mainly in late spring and summer. D. acuminata ecophysiology is largely unknown due to the inability to culture it. Therefore, standard biomass models based on inorganic nutrition are largely inadequate. Presently, any progress in describing the conditions of population growth of this species will be a step forward to prediction of harmful events at the coast. This species has been observed at increased, albeit low cell densities in retentive eddies located in pycnocline layers. A concentration build-up of one species results from the balance between growth and loss processes, one of the latter being dispersal. The scales of interest for a D. acuminata population are of the order of 10 nautical miles on the horizontal and duration of 10 days, for a reported achievable growth rate of 0.6 day(-1). A three dimensional (3D) hydrodynamical model of the Bay of Biscay has been elaborated to reproduce hydrological structures over the last decade. We attempt here to relate the existence of retentive structures revealed from simulations under realistic forcing conditions and the toxic coastal events recorded in the 10-year time series of the French plankton monitoring network database. The eddies in the coastal area appear to be directly related with the Dinophysis coastal events and they may be a potential effective tool to predict those. (c) 2006 Elsevier B.V. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000244116600011
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5909
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Xie, HQ; Lazure, P; Gentien, P.Small scale retentive structures and Dinophysis,JOURNAL OF MARINE SYSTEMS,2007,64(40547):173-188
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