长江口强壮箭虫和肥胖箭虫的丰度变化对环境变暖的响应  

Effects of global warming on Sagitta crassa and Sagitta enflata(Chaetognatha) in the Changjiang Estuary during different years

作　　者：李云[1] 徐兆礼[1] 高倩[1] 

机构地区：[1]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

出　　处：《生态学报》2009年第9期4773-4780,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金重大研究计划资助项目(90511005);中国近海海洋综合调查与评价(908)专项资助项目(908-02-01-03);中央级公益性科研院所基本科研业务费专项资金资助项目(中国水产科学研究院东海水产研究所)资助项目(2008M13)

摘　　要：根据1959年和2002年在长江口28°00′～32°00′N,122°00′～123°30′E海域4个季节8个航次海洋调查资料,分析强壮箭虫(Sagitta crassa)和肥胖箭虫(Sagitta enflata)丰度的平面分布和季节变化特征,并结合同步的温度资料分析不同生态类群的强壮箭虫和肥胖箭虫对环境变暖的响应。结果表明:长江口水域春、夏、秋3季强壮箭虫平均丰度均小于1.00ind/m3,出现率低,无集群性。1959年冬季平均丰度达3.24ind/m3,出现率较高,有明显的集群性,而2002年冬季平均丰度锐减为0.001ind/m3,几无分布。肥胖箭虫夏季平均丰度、出现率和集聚强度明显高于其它季节。2002年夏季平均丰度达16.06ind/m3,较1959年增加3.71ind/m3,且分布区明显扩大。可见,暖温种强壮箭虫和暖水种肥胖箭虫对长江口海域变暖的响应不同,可作为长江口海洋变暖长期变化的重要指示种。Based on the data from eight seasonal oceanographic censuses in the Changjiang Estuary （28°00′- 32°00′N, 122°00′- 123°30′ E） in 1959 and 2002, this paper discussed temporal-spatial distributions of Sagitta crassa and Sagitta enflata and effects of global warming on them in the Changjiang Estuary. The results show that the average abundance of S crassa was less than 1.00 ind/m^3 , and its occurrence frequency was lower, had no aggregate feature during spring, summer and autumn. In the winter of 1959 the average abundance was 3.24 ind/m^3, and the occurrence frequency and aggregation intensity were higher, while in winter, 2002, the average abundance sharply decreased to 0. 001 ind/m^3, and almost disappeared. The average abundance, occurrence frequency and aggregation intensity of S. enflata were much higher in summer than in other seasons. The average abundance was as high as 16.06 ind/m^3 in the summer of 2002, increasing by 3.71 ind/m^3 compared to the same season in 1959, and the distribution area clearly expanded. It is obvious that responses of S. crassa and S. enflata to water temperature warming are different in the Changjiang Estuary, and both species could be awarded as important indicators of global warming

关 键 词：强壮箭虫 肥胖箭虫 全球变暖 指示种 长江口 

分 类 号：Q958.8[生物学—动物学]