文章摘要
舟山沿岸渔场春秋季鱼类群落结构特征分析
Analysis of the fish community structure in the spring and autumn of Zhoushan coastal fishing ground
投稿时间:2019-03-11  修订日期:2019-05-28
DOI:
中文关键词: 鱼类  种类组成  多样性  群落结构  舟山沿岸渔场
英文关键词: fish  species composition  diversity  community structure  Zhoushan coastal fishing ground
基金项目:国家自然科学基金项目
作者单位E-mail
郭朋军 舟山市海洋与渔业局 93658486@qq.com 
江新琴 浙江海洋大学  
俞存根 浙江海洋大学  
邓小艳 浙江海洋大学  
张平 浙江海洋大学  
许永久 浙江海洋大学  
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中文摘要:
      根据2015年11月(秋季)、2016年5月(春季)在舟山沿岸渔场开展的渔业资源调查中所获得的鱼类资源资料,利用群聚的物种相似性、多样性指数、多元分析、RDA分析等方法,对该海域鱼类种类组成、生态类群、多样性和群聚特征进行了分析。结果表明:本次调查共鉴定出鱼类81种,隶属于12目39科63属,以近海暖水种为主;Jaccard相似性指数为37.04%,处于中等不相似水平;优势种计算结果显示春季优势种为六丝钝尾虾虎鱼(Amblychaeturichthys hexanema),渔获量占总渔获量的42.16%;秋季优势种为龙头鱼(Harpodon nehereus),占总渔获量的43.56%;春季多样性高于秋季,但两个季节多样性指数平面分布相似,均为调查海域南部最低,越往北多样性指数越高,并且东部海域高于西部海域;ANOSIM检验显示各群落间差异极显著;相似性百分比(SIMPER)表明,蓝圆鲹(Decapterus maruadsi)、棘头梅童鱼(Collichthys lucidus)、龙头鱼等7种,中华小沙丁鱼(Sardinella nymphaea)、日本鳀(Engraulis japonicus)、七星底灯鱼(Benthosema pterotum)等9种,分别是春、秋季各组群的典型种及造成鱼类群落结构差异的主要分歧种。RDA研究结果显示,盐度、温度是舟山沿岸渔场鱼类群落结构主要的环境影响因子。
英文摘要:
      Based on the data of fishery resource surveys in November, 2015(autumn) and May, 2016(spring) in Zhoushan coastal fishing ground, the species composition, ecological group, diversity and clustering characteristics of fish species in this area were analyzed by means of the species similarity, diversity index, multivariate analysis and the RDA analysis. The results showed that, a total of 81 fish species were identified, which belonged to 63 genera in 39 families of 12 orders, gaving priority to with offshore warm water species. The Jaccard similarity index is 37.04%, at the middle dissimilarity level. The computedSresults of the dominant species showed that the dominant species in spring was Amblychaeturichthys hexanema, which accounted for 42.16% of the total catches. The dominant species in the autumn was Harpodon nehereus, which accounted for 43.56% of the total catches. The diversity index of spring was higher than that in autumn, but the two seasonal diversity index had similar planar distribution, which was the lowest in the south of the survey area, and it was the lowest in the south of the area, and the north was higher, and the eastern sea was higher in the west. The ANOSIM test showed that the differences between the communities were very significant. The similarity percentage (SIMPER) showed that seven species of fish, such as Decapterus maruadsi, Collichthys lucidus, Harpodon nehereus were the typical species of different groups in spring and the main differences in the fish’s community structure, in autumn were nine species of fish, such as Sardinella nymphaea, Engraulis japonicus, Benthosema pterotum. The results of RDA indicated showed that the main environmental factors that influenced the structure of fish community in Zhoushan coastal fishing ground was salinity and temperature.
相关附件:   万方20190311(15.88%)  附件1  万方20190528_审稿(17.30%)
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