浙江洞头大竹屿岛潮间带大型底栖生物多样性

浙江洞头大竹屿岛潮间带大型底栖生物多样性*吕永林1张永普2**李凯1胡仁勇2周化斌2陈国伟3许曹鲁3(1温州市渔业技术推广站,浙江温州325003;2温州大学生命与环境科学学院,浙江温州325035;3洞头县水产科技推广站,浙江洞头325700)摘要2009年4、7、10月和2010年1月对大竹屿岛潮间带大型底栖生物进行了调查,共采集到大型底栖生物125种,其中软体动物57种、甲壳动物24种、腔肠动物6种、其他动物6种和藻类32种,分别占总种数的4516%、1912%、418%、418%和2516%。高潮区优势种为小结节滨螺(Nodilittorinaexigua)和短滨螺(Littorinabrevicula),中潮区为日本笠藤壶(Tetraclitajaponica)和条纹隔贻贝(Septifervirgatus),低潮区为盘管虫(Hydroidessp.)、鼠尾藻(Sargassumthunbergii)和短石蛏(Lithophagacurta)。大型底栖生物总平均丰度和生物量分别为1637ind#m-2和2851163g#m-2。Shannon指数、Margalef丰富度指数和Pielou均匀度指数的平均值分别为1163、3136和0135。等级聚类和非度量多维标度排序分析结果吻合;比较丰度/生物量曲线表明,群落结构已受到干扰,但群落相对稳定。关键词群落结构;多样性;大型底栖生物;潮间带;大竹屿岛中图分类号Q178文献标识码A文章编号1000-4890(2011)4-0707-10MacrobenthosdiversityinintertidalzoneofDazhuyuIsland,DongtouCountyofZhejiangProvince.LBYong-lin1,ZHANGYong-pu2,LIKai1,HURen-yong2,ZHOUHua-bin2,CHENGuo-wei3,XUCao-lu3(1WenzhouFisheriesTechnologyExtensionService,Wenzhou325003,Zhejiang,China;2CollegeofLifeandEnvironmentalSciences,WenzhouUniversity,Wenzhou325035,Zhejiang,China;3DongtouFisheriesTechnologyExtensionService,Dongtou325700,Zhejiang,China).ChineseJournalofEcology,2011,30(4):707-716.Abstract:InvestigationsweremadeonthemacrobenthosdiversityinintertidalzoneofDazhuyuIslandinApril2009(spring),July2009(summer),October2009(autumn),andJanuary2010(winter).Atotalof125macrobenthosspecieswerecollected,including57mollusca,24crustacea,6coelenterates,6otheranimals,and32macroalgae,accountingfor4516%,1912%,418%,418%,and2516%ofthetota,lrespectively.Thedominantspeciesinhigh,mid,andlowtidalzoneswereNodilittorinaexiguaandLittorinabrevicula,TetraclitajaponicaandSeptifervirgatus,andHydroidessp.,Sargassumthunbergii,andLithophagacurta,respectively.Themacrobenthosabundancewasaveragely1637ind#m-2,andthebiomasswas2851163g#m-2onaverage.TheShannonindex,Margalefindex,andPielouevennessindexwere1163,3136,and0135,respectively.Therewasaconsistencybetweentheresultsofhierarchicalcluste-ringandnon-metricmultidimensionalscalinganalysis.Theabundance/biomasscurveshowedthatthecommunitystructureofmacrobenthosi