| Distribution characteristics of zooplankton biomass in the East China Sea |
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| 作者姓名： | XU Zhaoli CHAO Min CHEN Yaqu |
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| 作者单位： | XU Zhaoli，CHAO Min，CHEN Yaqu
East China Sea Fisheries Research Institute，Chinese Academy of Fisheries Sciences，Shanghai 200090，China
Key and Open Laboratory of Marine and Estuarine Fisheries of Ministry of Agriculture of China，Shanghai 200090，China |
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| 摘 要： | On the basis of the data of oceanographic survey in the East China Sea in four seasons during 1997-2000 (23°30'~33°00'N, 118°30'-128°E), the variation of total biomass and diet biomass of zooplankton and their spatial-temporal distribution and relationship with the fishing ground of Engraulis japonicus are approached and analyzed. The results show that the average biomass is 65.32 mg/m3 in four seasons, autumn (86.18 mg/m3) being greater than summer (69.18 mg/m3) greater than spring (55.67 mg/m3) greater than winter (50.33 mg/m3). The average value of diet zooplankton biomass is 40.9 mg/m3. The trends of horizontal distribution both in the total biomass and the diet biomass of zooplankton are similar. The high biomass region (250-500 mg/m3) is very limited, only accounting for 1% of the investigation area. Seasonal variation of the biomass is very remarkable in the west and north parts of East China Sea coastal waters ( 29°30'N,125°E). The horizontal distribution of diet zooplankton depends on the
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| 关 键 词： | 浮游动物 生物数量 时-空联系 季节性 东海 |
| 收稿时间： | 2003/10/11 0:00:00 |
| 修稿时间： | 3/6/2004 12:00:00 AM |
Distribution characteristics of zooplankton biomass in the East China Sea |
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| XU Zhaoli,CHAO Min,CHEN Yaqu.Distribution characteristics of zooplankton biomass in the East China Sea[J].Acta Oceanologica Sinica,2004,23(2):337-346. |
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| Authors: | XU Zhaoli CHAO Min and CHEN Yaqu |
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| Institution: | East China Sea Fisheries Research Institute, Chinese Academy of Fisheries Sciences, Shanghai 200090, China;Key and Open Laboratory of Marine and Estuarine Fisheries of Ministry of Agriculture of China, Shanghai 200090, China |
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| Abstract: | On the basis of the data of oceanographic survey in the East China Sea in four seasons during 1997～2000 (23°30′～33°00′N,118°30′～ 128°E), the variation of total biomass and diet biomass of zooplankton and their spatial-temporal distribution and relationship with the fishing ground of Engraulisjaponicus are approached and analyzed. The results show that the average biomass is 65.32 mg/m3 in four seasons, autumn (86.18 mg/m3) being greater than summer (69.18 mg/m3) greater than s pring ( 55.67 mg/m3) greater than winter (50.33 mg/m3). The average value of diet zooplankton biomass is 40.9 mg/m3.The trends of horizontal distribution both in the total biomass and the diet biomass of zooplankton are similar. The high biomass region (250～500 mg/m3) is very limited, only accounting for 1% of the investigation area. Seasonal variation of the biomass is very remarkable in the west and north parts of East China Sea coastal waters ( 29°30′N, 125°E). The horizontal distribution of diet zooplankton depends on the abundance distribution of crustacean. The distribution of diet zooplankton is related to the fishing ground of Engraulis japonicus and the high-density area of young fish and larval. In spring, the central fishing ground of Engraulis japonicus (＞100 kg/h) and the high-density area of young fish and larval (＞100 individuals per net) are located at the same place of high-density (100～250 mg/m3)area of diet zooplankton in the middle-southern part of East China Sea or the edge of its waters. |
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| Keywords: | zooplankton total biomass diet biomass East China Sea fishing ground of Engraulis japonicus |
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