摘要
根据2008年夏季对东山湾进行的底拖网调查资料,分析了东山湾游泳动物群落的多样性现状.结果表明,2008年夏季游泳动物调查渔获物种类共80种,以鱼类为主(54种),其余依次为蟹类(10种)、虾类(8种)、头足类(6种)和其他类(2种);渔获物优势种(IRI>100)为红星梭子蟹(Portunus sangiunolentus)、哈氏仿对虾(Parapenaeopsis hardwickii)、白姑鱼(Pennahia argentatus)等15种;游泳动物质量相对资源密度为363.05 kg/km2,尾数相对资源密度为16 605 ind./km2,低于同季节东海大陆架和南海北部大陆架浅海海域的资源密度水平,也低于兴化湾等湾口类型海域的资源密度水平;渔获物种类和现存资源较历史数据有衰减的趋势;Shannon-Wiener物种多样性指数平均为2.08,表明该水域仅受到轻度污染,仍适合渔业资源生物的生长和繁育,但需要加强管理和养护.
Based on the bottom trawl surveys in Dongshan Bay in summer of 2008, the diversity of nekton community in Dongshan Bay was studied. The result indicates that a total of 80 species are found, fish are predominantly （54 species）, others are crab（ 10 species）, shrimp（8 species）, cephalopods（6 species）and 2 other species. The dominant species（ IRI 〉 100）are Portunus sangiunolentus, Parapenaeopsis hardwickii, Pennahia argentatus and other 12 species. The relative resource density of nekton quality is 363.05 kg/km2, while the relative resource density of nekton quantity is 16 605 ind./km2, which is lower than the results from the shelf of East China Sea and the northern shelf of South China Sea in summer, as well as the results of other bays, such as Xinghua Bay. The fish caught and standing crops tend to decline comparing with historical data. The average Shanon-Wiener index （H＇） is 2.08, which indicates that the area was slight polluted but still fitted for fish inhabiting though the conservation and man- agement need to be strengthened.
出处
《应用海洋学学报》
CAS
CSCD
2013年第2期222-230,共9页
Journal of Applied Oceanography
基金
国家908专项资助项目(908-02-01-02
908-02-04-01)
国家海洋局第三海洋研究所基本科研业务费专项资金资助项目(海三科2010016)
