文章摘要
周轩,王淼,洪波.杭州湾东北部渔业资源群落结构的季度变化[J].上海海洋大学学报,2019,28(4):597-606
杭州湾东北部渔业资源群落结构的季度变化
Fishery resources community structure seasonal change in North-eastern Hangzhou Bay
投稿时间:2018-12-07  修订日期:2019-04-11
DOI:10.12024/jsou.20181202460
中文关键词: 杭州湾  定置张网  渔业资源  优势种  特征种  群落结构
英文关键词: Hangzhou Bay  set net  fishery resource  dominant species  characteristic species  community structure
基金项目:生态循环农业技术创新工程(2017-02-08-00-07-F00075);上海市农口系统青年人才成长计划(沪农青字〔2017〕第3-6号)
作者单位E-mail
周轩 上海市水产研究所 渔业检验监测科, 上海 200433  
王淼 上海市水产研究所 渔业检验监测科, 上海 200433  
洪波 上海市水产研究所 渔业检验监测科, 上海 200433 13917064829@163.com 
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中文摘要:
      根据2017年春夏秋3个季度在杭州湾东北部开展定置张网调查所获得的数据,应用种类组成、优势种、特征种和ABC曲线等分析定置张网渔业资源群落结构特征。结果显示:杭州湾东北部3个季度共捕获渔业资源48种,主要由30种鱼类和16种虾蟹类组成,且不同季度物种相似性水平均低于25%,为极不相似水平。根据适温性及生态习性将鱼类分成5种生态类型;根据适温性及盐度将虾蟹类分为2种生态类型。凤鲚及安氏白虾为3个季度的共同优势种及特征种,葛氏长臂虾为夏秋季的共同优势种及特征种。不同季节的多样性指数并未出现显著差异,秋季相对其他季节能维持更高的多样性。等级聚类分析和非度量多维标度排序发现春季聚为Ⅰ组,夏季和秋季为Ⅱ组。ABC曲线结果显示,夏季和秋季杭州湾东北部渔业资源结构受到了中等程度及以上的干扰,且受干扰程度高于春季。因此,春夏季是杭州湾东北部渔业资源群落结构变动较大的季度,而夏秋季渔业资源群落结构变化相对较小。
英文摘要:
      The fishery resources community structure of set net was analyzed by composition and dominant species and characteristic species and abundance-biomass comparison curve based on the fishery resources data collected from Northeast Hangzhou Bay in the first three quarters of 2017.The results showed that 48 species including 30 fish species and 16 crustacean species were collected in three seasons. Jaccard similarity coefficient in different seasons was lower than 25% (significant nonsimilar level).The fish in the catch were divided into 5 ecological types according to the thermophilicity and ecological habits and crustacean species were divided into two types according to the thermal adaptation and salinity. There was no distinct change of diversity index among three seasons.Relatively higher diversity was observed in the autumn. Hierarchical cluster analysis and MDS analysis showed that the fishery resources communitie sin summer and autumn were clustered together. ABC curves showed that fishery resources communities were moderately affected in summer and autumn relative to spring.The great variation was observed in spring and summer in the Northeast Hangzhou Bay and minor variations in summer and autumn.
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