Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998

被引：0

作者：

方宏达

唐森铭

机构：

[1] South China Sea Environmental Monitoring Center, State Oceanic Administration

[2] The Third Institute of Oceanography, State Oceanic Administration

来源：

Journal of Oceanology and Limnology | 2009年 / 01期

关键词：

algal blooms; red tide; diatoms; dinoflagellates; water turbulence; Hong Kong;

D O I：

暂无

中图分类号：

X55 [海洋污染及其防治];

学科分类号：

071012 ; 0713 ; 083002 ;

摘要：

Phytoplankton abundance was found to be positively correlated with seasonal changes of seawater temperature in Port Shelter and Lamma Channel, Hong Kong in 1998. Rising water temperature from around 20°C to 25°C coincided with an increase in phytoplankton abundance at both locations. Heavy rains from June to September reduced salinity from 30 to 20, but the decrease in salinity was not correlated with a decline in phytoplankton abundance. In spring 1998, over 0.6×106 cells dm-3 and 0.1×106 cells dm-3 of the dinoflagellate, Gymnodinium mikimotoi Miyake et Kominami ex Oda occurred in the coastal waters of Port Shelter and Lamma Channel, respectively. High abundance of the dinoflagellate Ceratium furca (Ehr.) Claparede et Lachmann (>1×106 cells dm-3) produced long-lasting blooms in the waters of Port Shelter from September to October in 1998. The abundances of both diatoms and dinoflagellates were significantly lower in the waters of Lamma Channel than those in Port Shelter due to the less frequent blooms in 1998. Hydrographic

引用

页码：13 / 21

页数：9

共 7 条

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