中文摘要：

基于2013年5月在温州瓯飞滩邻近海域底拖网调查数据,采用传统多样性分析、ABC曲线、群落聚类分析和非度量多维测度相结合的方法,对游泳动物群落结构及多样性进行研究。结果显示,渔获物中游泳动物种类共87种,其中鱼类55种,虾类18种,蟹类10种,头足类4种。游泳动物群落中优势种为六丝钝尾虎鱼（Amblychaeturichthys hexanema）、银鲳（Pampus argenteus）和龙头鱼（Harpodon nehereus）,重要种为中国花鲈（Lateolabrax maculatus）、棘头梅童鱼（Collichthys lucidus）等17种。游泳动物个体密度为304.6×103尾·km-2,质量密度为365.8 kg·km-2。经聚类分析和非度量多维标度（NMDS）分析,该海域游泳动物群落在空间上可分为3个站位组。游泳动物群落种类组成在组内站位间及组间的比较均差异极显著（R=0.463~0.807）。ABC曲线表明,游泳动物群落处于较严重的干扰状态,群落中个体较小、生长速度较快的r对策者在群落中占据重要地位。Shannon-Wiener多样性指数（H＇）为1.31~3.74;Pielou均匀度指数（J＇）为0.33~0.78;Margalef物种丰富度指数（D）为1.80~5.81。

英文摘要：

Based on the bottom trawl surveys in May of 2013, we investigated the community structure and biodiversity of nekton near Oufei Beach of Wenzhou by traditional diversity analysis, abundance-biomass comparison curves, clustering analysis and non-metric multidimensional scaling. A total of 87 species were collected, including 55 species of fish, 18 species of shrimps, 10 species of crabs and 4 species of cephalopods. The dominant species were Amblychaeturichthys hexanema, Pampus argenteus and Harpodon ne- hereus; the important species were Lateolabrax maculatus, Collichthys lucidus and other 15 species. The densities of nekton quantity and weight were 304. 6 x 103 ind＇km-2 and 365.8 kg-km-2, respectively. Cluster analysis and non-metric multidimensional scaling （NMDS） analysis reveal that the nekton community could be spatially clustered into three groups. ANOSIM analysis shows very signifi- cant difference in nekton species composition among all groups （R = 0. 463 - 0. 807）. The abundance and biomass curves （ABC） in- dicate that the nekton community was seriously disturbed, and the fast-growing, small-sized and opportunistic r-strategist was dominant in the nekton community. The Shannon-Wiener diversity index （H＇）, Pielou evenness index （J＇） and Margalef species richness index （D） ranged from 1.31 to 3.74, 0. 33 to 0. 78, and 1.80 to 5.81, respectively.