| 东海浮游翼足类(Pteropods)数量分布的研究 |
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| 引用本文： | 徐兆礼.东海浮游翼足类(Pteropods)数量分布的研究[J].海洋学报,2005,27(4):148-154. |
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| 作者姓名： | 徐兆礼 |
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| 作者单位： | 中国水产科学研究院, 东海水产研究所, 农业部海洋与河口渔业重点开放实验室, 上海, 200090 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(2001CB409707)，我国近海海洋综合调查与评价专项资助项目(908020103). |
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| 摘 要： | 根据1997～2000年东海海域23°30'～33°00'N,118°30'～128°00'E的4个季节海洋调查资料,运用定量、定性方法,探讨了东海浮游翼足类总丰度的平面分布、季节变化及变化的动力学机制.结果表明,东海翼足类总丰度和出现频率有明显的季节变化,均为秋季最高,夏季次之,春季最低;总丰度在各个季节基本上呈东海南部高于北部、外海高于近海的分布趋势;春季的尖笔帽螺(Creseis acicula)、夏季的锥笔帽螺(Creseis virgula)、秋季的蝴蝶螺(Desmopterus papilio)和冬季的马蹄螔螺(Limacina trochiformis)是导致总丰度季节变化的最主要的种类;冬、春和夏3个季节丰度变化及4季总丰度的变化同表层或10m层水温有非常显著的线性相关关系,与底层温度及盐度的相关关系不显著.夏季翼足类高丰度区位于台湾暖流与黑潮暖流的分支处;从夏季到秋季,翼足类随着台湾暖流向北扩展,并在与长江冲淡水,闽浙沿岸水团,黄海水团等交汇处形成高丰度(大于500×10-2个/m3)和较高丰度(250×10-2～500×10-2个/m3)分布区.水温和海流是影响东海翼足类总丰度分布的主要环境因素.
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| 关 键 词： | 东海 浮游动物 浮游翼足类 数量分布 回归贡献 |
| 文章编号： | 0253-4193(2005)04-0148-07 |
| 收稿时间： | 7/1/2003 12:00:00 AM |
| 修稿时间： | 2004/1/20 0:00:00 |
Studies on distribution of Pteropods abundance in the East China Sea |
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| XU Zhao-li.Studies on distribution of Pteropods abundance in the East China Sea[J].Acta Oceanologica Sinica (in Chinese),2005,27(4):148-154. |
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| Authors: | XU Zhao-li |
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| Institution: | Key and Open Laboratory of Marine and Estuary Fisheries of Ministry of Agriculture of China, East China Sea Fisheries Research Institute, Chinese Academy of Fisheries Sciences, Shanghai 200090, China |
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| Abstract: | On the basis of data of four seasonal investigations in the East China Sea(23°30'～33°00'N,118°30'～128°00'E) in 1997~2000,the distribution and the seasonal variation of Pteropods abundance and the environmental factors on Pteropods abundance as well as the regression contribution of the abundance of dominant species to total abundance were discussed through qualitative and quantitative methods.Results show a clear seasonal change of Pteropods abundance with the following order:autumn(108×10-2～500×10-2ind/m3) being greater than summer(33×10-2ind/m3) being greater than winter(28×10-2ind/m3) beingg reater than spring(10×10-2ind/m3).Pteropods were not observed in north shallow waters of the East China Sea(29°30'~33°N,123°30'~125°E) in winter and spring.The seasonal changes of Pteropods show that the Pteropods abundance in the south is higher than that in the north and that in the out shore higher than that in the off shore.On the basis of the analysis results of dominance and regression contribution,the Pteropods abundance distribution is decided mainly by the distribution of Creseis acicul a in spring,C.virgula in summer,Desmopterus papilio in autumn and Limacinat rochi formis in winter.The variation of Pteropods abundance shows a clear linear correlation with surface water temperature and 10 m water temperature but no significant correlation with bottom water temperature or salinity.In summer,the high-abundance distribution area of Pteropods is located in the place where the Taiwan Warm Currentorig inates from Kuroshio.In autumn,the distribution area with abundance higher than 250×10-2ind/m3 expands with the Taiwan Warm Current north ward within the mixing area where the Changjiang fresh water,the Zhejiang-Fujian coastal water and the cold water of Huanghai Sea meettogether.Water temperature and warm currents are the mostimportant environmental factors that influenced the changes of Ptero pods abundance in the East China Sea. |
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| Keywords: | zooplankton pelagic Pteropods abundance distribution regression contribution East China Sea |
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