| 1998年春深圳湾环节环沟藻赤潮及其发生原因的探讨 |
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| 引用本文： | 王朝晖,齐雨藻,尹伊伟,江天久,谢隆初.1998年春深圳湾环节环沟藻赤潮及其发生原因的探讨[J].海洋科学,2001,25(5):47-50. |
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| 作者姓名： | 王朝晖 齐雨藻 尹伊伟 江天久 谢隆初 |
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| 作者单位： | 1. 暨南大学水生生物研究所
2. 暨南大学水生生物研究所广州510632 |
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| 基金项目： | 国家自然科学基金!重大资助项目39790110号 |
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| 摘 要： | 1998年4月23日至29日深圳湾发生了较大规模的环节环沟藻赤潮,面积逾200km2,细胞密度高达3.8×106 个/L。赤潮发生于大量降雨之后 ,高峰期水体盐度在20以下。在深圳河河口海域 ,虽然富营养化程度也较高 ,但由于悬浮物含量过高 ,浮游植物及环节环沟藻数量较少。赤潮期间 ,深圳湾没有发生死鱼现象 ,养殖牡蛎的大量死亡估计与赤潮无关
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| 关 键 词： | 环节环沟藻 赤潮 深圳湾 发生原因 |
| 收稿时间： | 2000/3/15 0:00:00 |
| 修稿时间： | 2000年3月15日 |
STUDIES ON THE CAUSE AND THE OCCURRENCE REASONS OF A Gyrodinium instriatum RED TIDE IN SHENZHEN BAY IN SPRING OF 1998 |
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| WANG Zhao-hui,QI Yu-Zao,YIN Yi-wei,JIANG Tian-jiu,XIE Long-chu.STUDIES ON THE CAUSE AND THE OCCURRENCE REASONS OF A Gyrodinium instriatum RED TIDE IN SHENZHEN BAY IN SPRING OF 1998[J].Marine Sciences,2001,25(5):47-50. |
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| Authors: | WANG Zhao-hui QI Yu-Zao YIN Yi-wei JIANG Tian-jiu XIE Long-chu |
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| Abstract: | There are no apparent records of Gyrodinium instriatum red tides in Chinese coast. During April 23 to April 29, 1998, an intense bloom of Gyrodinium instriatum was observed in Shenzhen Bay, South China Sea, which covered 200 km2 areas. The bloom occurred at wet season when the salinity dropped to less than 20. High cell concentrations between 10 5 10 6 cells/L were recorded at the cage area and the outer estuary. Although the nutrient contents were relatively higher in the inner estuary of the Gulf of Shenzhen River, phytoplankton biomass was normally low due to heavy suspension of sediments. High nutrient concentration and heavy rain induce the outbreak of the bloom. No fish kills were observed during the red tide, and the mortality of farmed oyster had no relative to the bloom. |
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| Keywords: | Gyrodinium instriatum Red tide Shenzhen Bay South China Sea |
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