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当前位置: 首页 > 文章 > 基于渔获群落多样性指标的深水流刺网渔具作业性能分析 海洋湖沼通报 2019 (2) 70-80
Position: Home > Articles > 基于渔获群落多样性指标的深水流刺网渔具作业性能分析 Transactions of Oceanology and Limnology 2019 (2) 70-80

基于渔获群落多样性指标的深水流刺网渔具作业性能分析

作  者：
徐国强;李鹏飞;张洪亮;李德伟;朱文斌
单  位：
浙江省海洋水产研究所
关键词：
东海区;深水流网;种类组成;多样性;ABC曲线
摘  要：
根据在东海区开展的3种型深水流刺网选择性试验数据,对3种型深水流网渔获组成、多样性及渔获性能进行了分析比较研究.结果表明:(1)本次试验共捕获33种渔获物,包括鱼类28种、头足类3种、甲壳类2种,其中3种型刺网均捕获种类8种;(2)3种型刺网优势种存在差异,日本方头鱼和黄鲷为共同优势种;(3)3种型刺网捕获种类多样性指数(D值、H'值、J'值)均不存在显著性差异(P>0.05),但渔获种类差异明显,3种型刺网两两比较种类Sorensen相似度均低于50%;(4)同型刺网相邻网目尺寸Bray-Curtis相似性较高,随着网目间距增加,相似度逐渐减低,以重量和尾数计算的相似性基本趋于一致;(5)3种型刺网随网目尺寸的增加(50~70mm),其W统计值(-0.113~0.040)总体上呈现依次增大的趋势,干扰程度逐渐较低.从生态多样性保护角度,增大网目尺寸是目前保护东海区底层生物多样性最有效的方式之一.
作  者：
XU Guoqiang;LI Pengfei;ZHANG Hongliang;LI Dewei;ZHU Wenbin;Marine Fisheries Research Institute of Zhejiang Province;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province;
单  位：
XU Guoqiang%LI Pengfei%ZHANG Hongliang%LI Dewei%ZHU Wenbin%Marine Fisheries Research Institute of Zhejiang Province%Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture%Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province
关键词：
East China Sea;;Deep water drift net;;Species composition;;Diversity;;ABC curve
摘  要：
Based on the selective test data of three kinds of gillnets in the East China Sea, species composition, community diversity and catching performance were analyzed. The results showed that(1) a total of 33 species were captured, which included fish(28 species), cephalopods(3 species) and crustaceans(2 species), 8 species each gillnet in average;(2) the dominant species were different among gillnets, and Branchiostegus japonicas and Dentex tumifrons were common;(3) the diversity indices(D, H' and J') were similar among gillnets(p>0.05) while the species captured were different, and the Sorensen similarity was<50%;(4) the Sorensen similarity was similar between adjacent mesh sizes of gillnets in terms of number and biomass, and the similarity decreased gradually with the increase of mesh space;(5) W(-0.113-0.040) increased with the increase of mesh size(50-70 mm), and the degree of impact decreased gradually. In order to protect the ecological diversity, increasing mesh size is one of the most effective ways.

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