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

Hongda Fang; Senming Tang

doi:10.1007/s00343-009-0013-3

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

OriginalPaper | Updated：2023-05-16

- Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998
- Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998
- 海洋湖沼学报（英文） 2009年27卷第1期页码：13-21
- Affiliations：
  
  1. South China Sea Environmental Monitoring Center State Oceanic Administration
  2. The Third Institute of Oceanography State Oceanic Administration
- Author bio：
- Funds：
  
  Supported by the Project for Coastal Sea Investigation and Assessment in China (No. 908-02-03-09, 908-01-ST06, and FJ908-01-01-HS) and the Natural Science Foundation of China (No.10705019)
- DOI：10.1007/s00343-009-0013-3
  中图分类号：
- 网络首发：2009-03-27，
  
  纸质出版：2009
- Accepted：
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Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998[J]. 海洋湖沼学报（英文）, 2009,27(1):13-21.

Fang, H., Tang, S. Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998., Chin. J. Ocean. Limnol. 27, 13–21 (2009). https://doi.org/10.1007/s00343-009-0013-3
Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998[J]. 海洋湖沼学报（英文）, 2009,27(1):13-21. DOI： 10.1007/s00343-009-0013-3.

Fang, H., Tang, S. Comparative study of hydrographic conditions for algal bloom formation in the coastal waters of east and west of Hong Kong during 1998., Chin. J. Ocean. Limnol. 27, 13–21 (2009). https://doi.org/10.1007/s00343-009-0013-3 DOI：

摘要

Abstract

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 conditions such as stable water masses and water column stratification were the main reasons for the differences in the algal abundance and bloom frequency found between the two locations since neither of the two areas appeared to be nutrient-limited. This type water condition for the formation of algal bloom in Port Shelter has not been reported previously and it is not a general case for many bays along China’s coast where algal bloom occurs as well.

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references

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