Changes in fish diversity and community structure in the central and southern Yellow Sea from 2003 to 2015

IOCAS-IR

	Changes in fish diversity and community structure in the central and southern Yellow Sea from 2003 to 2015
	Chen YL(陈云龙); Dan XJ(单秀娟); Jin XS(金显仕); JOHANNESSEN Arne ; Yang T(杨涛); Dai FQ(戴芳群)
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2018-05-15
出版年	2018
卷号	v.36 期号:03 页码:207-219
文献类型	CNKI期刊论文
摘要	The central and southern Yellow Sea is an important overwintering ground for many fish species in the Bohai Sea and Yellow Sea. For better understanding the status of the fish community after years of heavy exploitation, variations in fish community structure and diversity were analyzed using data from bottom trawls during 2003–2015. Five fish assemblage indices all showed fluctuations without clear trends from 2003 to 2015, yet there were strong positive and significant correlations(P < 0.05) among them. The top-five dominant species accounted for a high weight percentage(49.7%–82.1%) in the annual fish catch. Multivariate analysis showed that two year groups could be pooled for the fish community: Group Ⅰ consisted of the years 2006, 2007, 2008 and 2015, while Group Ⅱ consisted of the years 2003, 2004, 2005, 2009, 2010 and 2014; the groups aggregated with 63.71% similarity, indicating a high level of similarity among all years. The multivariate dispersion values were 1.455 and 0.818 for Groups Ⅰ and Ⅱ, respectively, indicating greater variances in fish assemblage structure in Group Ⅰ than that in Group Ⅱ. Similarity of percentage analysis demonstrated that the average similarities for Group Ⅰ and Group Ⅱ were 71.58% and 67.51%, respectively. Size-spectra analysis revealed no consistent trend in the intercept and slope( P > 0.05); there were also no significant differences between the slope of the size-spectra and fishing ef fort. The catch per unit ef fort and mean individual weight analyses of the whole fish assemblage both showed a significantly decreasing trend over time. Overall, the results showed that the fish community structure in the central and southern Yellow Sea was relatively stable from 2003 to 2015 and the study could be used as a reference for supporting ecosystem-based fishery management.
关键词	dominant species fish community structure multivariate analysis trawl data
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S931.1
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Aoshan Science&Technology Innovation Program(No.2015ASKJ02-05) ; the Special Fund of the Taishan Scholar Project
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/188935
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.KeyLaboratoryofSustainableDevelopmentofMarineFisheries,MinistryofAgriculture,ShandongProvincialKeyLaboratoryofFisheryResourcesandEcologicalEnvironment,YellowSeaFisheriesResearchInstitute,ChineseAcademyofFisherySciences 3.UniversityofChineseAcademyofSciences 4.FunctionLaboratoryforMarineFisheriesScienceandFoodProductionProcesses,QingdaoNationalLaboratoryforMarineScienceandTechnology 5.DepartmentofBiology,UniversityofBergen
推荐引用方式 GB/T 7714	Chen YL,Dan XJ,Jin XS,et al. Changes in fish diversity and community structure in the central and southern Yellow Sea from 2003 to 2015. 2018.