中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)  > 期刊论文
学科主题: Oceanography
题名: Effect of wind events on phytoplankton blooms in the Pearl River estuary during summer
作者: Yin, KD ; Zhang, JL ; Qian, PY ; Jian, WJ ; Huang, LM ; Chen, JF ; Wu, MCS
通讯作者: kyin@ust.hk
关键词: phytoplankton productivity ; chlorophyll size fractionation ; Pearl River estuary ; winds
刊名: CONTINENTAL SHELF RESEARCH
发表日期: 2004
卷: 24, 期:16, 页:1909-1923
收录类别: sci
部门归属: Hong Kong Univ Sci & Technol, AMCE Program, Dept Biol, Kowloon, Hong Kong, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou, Peoples R China; State Ocean Adm, Inst Oceanog 2, Hangzhou 310012, Peoples R China
项目归属: LED
摘要: The Pearl River estuary fuels phytoplankton productivity in the estuarine coastal waters in the oligotrophic South China Sea. Cruises were conducted to investigate the spatial distribution of primary productivity, and two size fractionations (< 5 and > 5 pm) of chlorophyll in the Pearl River estuary and across the coastal plume south of Hong Kong during the season of high river discharge (July, 1999 and 2000). During 18-19 July 1999, phytoplankton biomass and productivity were low in the freshwater dominated estuary (< 20 mg chl am(-2) and < 100 mg Cm-2 d(-1), respectively), and were maximal at the edge of the estuarine coastal plume south of Hong Kong, reaching 70 mg chl am(-2) and 4.2 g Cm-2 d(-1), respectively. Chl a was dominated by the > 5 mum size fractionation (> 50%). The Pearl River estuary displayed a typical spatial variability of phytoplankton biomass: low biomass and productivity due to rapid dilution and light limitation in turbid estuarine waters, a regional maximum of biomass and productivity at intermediate salinities in the coastal plume and low biomass due to nutrient limitation in oceanic waters. In summer when south-southwest monsoonal winds blow, part of the coastal plume moves eastwards. A regional maximum of phytoplankton usually develops in the coastal plume south of Hong Kong. However, a change in wind direction to the east or northeast can cause the following effects: pushing the coastal plume westward to the estuary, holding (retaining) the estuarine plume in the estuary (due to the Coriolis effect) and at the same time, mixing the water column vertically. Such a strong east or northeast wind event was observed during July 22-26 1999 and caused an increase in salinity at the surface in the estuary compared to before the wind event. This wind event increased the residence time of the estuarine plume inside the estuary, and as a result, a phytoplankton bloom (52-151 mg chl am(-2)) developed during July 25-26 inside the estuary. This similar easterly wind effect was observed during July 2000. After a strong easterly wind event (speed 10 ms(-1)) on July 11, the coastal plume was absent in waters south of Hong Kong on July 13, but it returned on July 19 after winds blew from the south and southwest direction. The results suggest that wind events not only changed the spatial movement of the coastal plume, but also the spatial distribution of phytoplankton biomass and productivity in the Pearl River estuary and adjacent coastal waters. (C) 2004 Elsevier Ltd. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000225183000013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5607
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Effect of wind events on phytoplankton blooms in the Pearl River estuary during summer .pdf(423KB)----开放获取--View Download

Recommended Citation:
Yin, KD; Zhang, JL; Qian, PY; Jian, WJ; Huang, LM; Chen, JF; Wu, MCS.Effect of wind events on phytoplankton blooms in the Pearl River estuary during summer,CONTINENTAL SHELF RESEARCH,2004,24(16):1909-1923
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Yin, KD]'s Articles
[Zhang, JL]'s Articles
[Qian, PY]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Yin, KD]‘s Articles
[Zhang, JL]‘s Articles
[Qian, PY]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Effect of wind events on phytoplankton blooms in the Pearl River estuary during summer .pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院南海海洋研究所 - Feedback
Powered by CSpace