海洲湾北部海域春季渔业资源的群落结构特征

发布时间：2018-02-27 00:23

本文关键词： 海州湾北部海域渔业资源群落结构　出处：《渔业科学进展》2014年05期 　论文类型：期刊论文

【摘要】：根据2012年5月(春季)在海洲湾北部海域进行的渔业资源底拖网调查资料,分析了该海域渔业资源群落结构特征。结果表明,该海域共捕获渔业资源种类51种(鱼类33种、甲壳类14种、头足类4种),平均渔获量为24.59 kg/h。优势种类主要为尖海龙(Syngnathus acus)、方氏云溭(Pholis fangi)和戴氏赤虾(Metapenaeopsis dalei)。渔业生物群落的种类丰度指数D在1.400 3.255之间,平均为2.471;多样性指数H′在0.492 2.309之间,平均为1.857;均匀度指数J′在0.182 0.713之间,平均为0.596。本次调查出现鱼类种数比20世纪80年代记载的鱼类150种大幅降低;甲壳类、头足类比相关调查显示甲壳类19种、头足类6种的结果也有所降低。主要经济鱼类个体质量和数量减少,小型低价值鱼类及戴氏赤虾逐渐成为优势种,且未发现经济鱼类带鱼(Trichiurus lepturus),这可能与过度捕捞或其他人为活动扰动有关。
[Abstract]:Based on the survey data of fishery resources in the northern sea area of Haizhou Bay in May 2012 (spring), the community structure characteristics of fishery resources in this area were analyzed. The results showed that there were 51 species of fishery resources (33 species of fish) caught in this area. There are 14 crustaceans and 4 cephalopods, with an average catch of 24.59 kg / h. The dominant species are Syngnathus acusa, Pholis fangii and Metapenaeopsis daleii. The species abundance index of the fishery community is between 1.400 and 3.255. The average is 2.471; the diversity index H'is between 0.492 and 2.309, with an average of 1.857; the evenness index J'is between 0.182 and 0.713, with an average of 0.596.The number of fish species in this survey is significantly lower than the 150 species recorded in 1980s; crustaceans, The results of cephalopod analogies showed that 19 crustaceans and 6 cephalopods decreased. The individual quality and quantity of major economic fish decreased, and small and low value fish and red shrimp gradually became dominant species. Trichiurus lepturus was not found, which may be related to overfishing or other anthropogenic disturbance.
【作者单位】：山东省海洋生态环境与防灾减灾重点实验室;国家海洋局北海预报中心;国家海洋局青岛海洋环境监测中心站;山东省海洋资源与环境研究院;
【基金】：海洋公益性行业科研专项(201205036-07)资助
【分类号】：S931

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