台湾南湾秋末冬初水螅水母类的组成与分布  

Species composition and abundance distributionof Hydromedusae in late autumn and early winterfrom Nanwan Bay of Taiwan, China

作　　者：黄将修[1] 张金标[2] 连光山[2] 

机构地区：[1]台湾海洋大学海洋生物研究所,中国台湾基隆20224 [2]国家海洋局海洋-大气化学与全球变化重点实验室,国家海洋局第三海洋研究所,福建厦门361005

出　　处：《台湾海峡》2003年第4期437-444,共8页Journal of Oceanography In Taiwan Strait

基　　金：台湾NSC计划资助项目(902621-B019001-A10);福建省自然科学资助项目(97009)

摘　　要：本文分析了2001年11月2～3日和12月8～10日在台湾南湾12个测站采集的表层和底层92份浮游动物样品,共鉴定水螅水母18种,其中8种是台湾周围海域的新记录.半口壮丽水母(Aglaura hemistoma)和四叶小舌水母(Liriope tetraphylla)为优势种,它们在11月和12月分别占水螅水母类总量的77％和94％以上.南湾水螅水母类的种类数和个体丰度均以12月(17种,3102×10^(-3)个/m^3)明显多于11月(6种,72×10^(-3)个/m^3).在冬季,外海高盐水团是影响水螅水母类分布的主要因素,盐度与水螅水母类多样性指数的相关关系显著,文章还比较了南湾与邻近海区水螅水母类的季节变化.A zooplankton survey was carried out in November 2-3 and December 8-10, 2001 at 12 sampling stations from Nanwan Bay of Taiwan, China. Altogether 92 quantitative zoop-lanktonic samples were colleted from subsurface water layer and bottom layer with two conical plankton nets (180cm in length, 45cm in mouth diameter, 333μm or 200μm in mesh size). A total 18 species of Hydromedusae were identified, among them 8 species were new records in the waters around Taiwan. These species were dominated by Aglaura hemistoma and Liriope tet- raphylla , the two of them accounted for over 77 % and 94 % of the total abundance in November and December. The species number and abundance of Hydromedusae in December (17 species, 3 102 × 10-3ind/m3) were more than that in November (6 species, 72 × 10-3ind/m3) , and them at most sampling stations in subsurface water layer were more than that in bottom layer. While in early winter, the outshore hyperhyline water mass was the main factor influencing the distribution. The relativity between salinity and Shannon-Wiener index of species diversity in December were marked. The seasonal variation of species number and abundance from Nanwan Bay with neighbouring waters was compared.

关 键 词：水螅水母类 种类组成 数量分布 海洋浮游动物 

分 类 号：Q178.53[生物学—水生生物学] Q959.131[生物学—普通生物学]