| 摘要: |
| 有关水母类、浮游贝类及被囊类的垂直分布,迄今国内的报道还不多,只有陈清潮等(1978)在南海西沙、中沙群岛周围海域进行过一些调査工作。但国外早已开展这方面的工作,研究资料很多, Bigelow and Sear(1937), Leloup and Hentschel(1938),Totton(1954), Alvarino(1967),Pugh(1974)等对水母类都有较详细的报道;对浮游贝类和被囊类，Stubbing(1938), Tesch(1946), Thompson(1948), Swell(1953), Wormelle(1962)等也作了一些工作。
浮游动物的垂直分布是一个比较复杂的生态学问题,所涉及的因素很多(Bense,1964; Leloup and Hentschel,1938; Moore,Owre, Jones and Dow,1953)。本文仅就我们现有的材料进行初步分析。
本文系根据1978年5月27日-7月3日“金星”号在东经123°-129°,北纬26°30′一32°30′,水深大于80m的测站,用大型浮游生物网垂直分层采集(层次为0-50m,50-100m,100-250m,250-500m,500-1000m,1000-2000m)所获得的78份浮游生物样品,分析整理而成。 |
| 关键词: 东海、水母类、浮游贝类、被囊类、垂直分布 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第1627号 |
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| THE VERTICAL DISTRIBUTION OF THE MEDUSAE, PTEROPODA, HETEROPODA AND THALIACEA IN THE EAST CHINA SEA |
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Gao Shangwu
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| This paper is based on the materials collected from the East China Sea in May-July 1978.Vertical hauls were made with a closing conical net, mouth opening 80 cm and silk cone of gauze with 15 meshs per cm. Samples were obtained down to a depth of 2000 m. The layers sampled were: 0--50, 50-100, 100-250, 250-500, 500--1000, 1000-2000 m. Forty-two species of Medusae, sixteen species of Pteropoda and Heteropoda and ten species of Thaliacea were identified. Among them, Muggiaea atlantica, Aglaura hemistoma, Bassia bassensis. Chelophyes contorta, Liriope tetraphylla, Creseis acicula, C. virgula, Thalia democratica and Doliolum denticulatum are relatively dominant. They are distributed mainly to the south of lat, 31°N，but also found up to lat,31°-32°30′N.
Studies on the vertical distribution of the zooplankton showed that both the total abundance and the number of species decreased with increase in depth. Their maximum abundance is in the upper 100 m. They are rare or abson below 500 m. |
| Key words: VERTICAL DISTRIBUTION,MEDUSAE, PTEROPODA, HETEROPODA, THALIACEA ,EAST CHINA SEA |
