Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow
	Ho, AYT ; Xu, J ; Yin, KD ; Jiang, YL ; Yuan, XC ; He, L ; Anderson, DM ; Lee, JHW ; Harrison, PJ
刊名	ESTUARIES AND COASTS
	2010
卷号	33 期号:1 页码:170-181
关键词	Phytoplankton biomass Primary production Pearl River discharge Stratification Vertical mixing Hong Kong
ISSN号	1559-2723
通讯作者	xujie@ust.hk
中文摘要	The size-fractionated phytoplankton biomass and primary production were investigated in four contrasting areas of Hong Kong waters in 2006. Phytoplankton biomass and production varied seasonally in response to the influence of the Pearl River discharge. In the dry season, the phytoplankton biomass and production were low (<42 mg chl m(-2) and <1.8 g C m(-2)day(-1)) in all four areas, due to low temperatures and dilution and reduced light availability due to strong vertical mixing. In contrast, in the wet season, in the river-impacted western areas, the phytoplankton biomass and production increased greater than five-fold compared to the dry season, especially in summer. In summer, algal biomass was 15-fold higher than in winter, and the mean integrated primary productivity (IPP) was 9 g C m(-2)day(-1) in southern waters due to strong stratification, high temperatures, light availability, and nutrient input from the Pearl River estuary. However, in the highly flushed western waters, chl a and IPP were lower (<30 mg m(-2) and 4 g C m(-2)day(-1), respectively) due to dilution. The maximal algal biomass and primary production occurred in southern waters with strong stratification and less flushing. Spring blooms (> 10 mu g chlaL(-1)) rarely occurred despite the high chl-specific photosynthetic rate (mostly > 10 mu g C mu g chla(-1)day(-1)) as the accumulation of algal biomass was restricted by active physical processes (e.g., strong vertical mixing and freshwater dilution). Phytoplankton biomass and production were mostly dominated by the >5-mu m size fraction all year except in eastern waters during spring and mostly composed of fast-growing chain-forming diatoms. In the stratified southern waters in summer, the largest algal blooms occurred in part due to high nutrient inputs from the Pearl River estuary.
学科主题	Environmental Sciences; Marine & Freshwater Biology
收录类别	SCI
原文出处	SPRINGER
WOS记录号	WOS:000275420700015
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/6317]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Ho, AYT,Xu, J,Yin, KD,et al. Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow[J]. ESTUARIES AND COASTS,2010,33(1):170-181.
APA	Ho, AYT.,Xu, J.,Yin, KD.,Jiang, YL.,Yuan, XC.,...&Harrison, PJ.(2010).Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow.ESTUARIES AND COASTS,33(1),170-181.
MLA	Ho, AYT,et al."Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow".ESTUARIES AND COASTS 33.1(2010):170-181.