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Taxonomic Composition and Spatial Distribution of Meiofauna Community from a Sandy Intertidal Zone in Sishili Bay, Yellow Sea Coast (Northern China)

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Journal of Ocean University of China 2022年第5期21卷 1389-1401页

作者： PAVLYUK Olga N TREBUKHOVA Yulia A SHCHERBAKOV Ilya A TARASOVA Tatiana S lutaenko konstantin a CHEN Linlin SONG Bo LI Xiaojing LI Baoquan A.V.Zhirmunsky National Scientific Center of Marine Biology Far Eastern BranchRussian Academy of SciencesVladivostok 690041Russia Yantai Institute of Coastal Zone Research Chinese Academy of SciencesYantai 264003China

The meiofauna composition and trophic groups of the nematode communities have been studied at a sandy intertidal zone in Sishili Bay along the Yantai coast(Yellow Sea,China).Nematoda was dominant among the 11 groups of *** meiofaunal densities were low,ranging between 111±47 and 542±131 ind./10 cm^(2).Results obtained from the correlation analysis made it possible to determine several factors that influence species composition and ***,sediment granulometry significantly affected the *** highest abundance was found in fine-grained sediments(318.77±126 ind./10 cm^(2))com-pared to coarse-grained sediments(175±82 ind./10 cm2).Nematodes were predominant in all studied sites.A total of 70 species be-longing to 52 genera and 18 families were identified in the study *** was a significant difference in nematode abundance(ANOVA,F=2.38,P63μm),with dominant species belonging to the genus Bathylaimus,Ptycho-laimellus,Spirinia,and *** trophic groups were dominated by non-selective deposit feeders(40.7%)and epistrate feed-ers(41.29%).In contrast,the species composition in medium grain sands was characterized by a low species diversity index and a high Simpson dominance *** communities showed similar dominant species compositions belonging to a single genus Bathylaimus,Enoplolaimus,and Oncholaimus,and in terms of trophic structure-representatives of deposit feeders(46.15%),preda-tors,and omnivores(64.71%)*** divergence of meiofaunal community structures can be explained by abiotic factors such as sediment grain size,salinity,and organic carbon ***,sediment particle size can explain the diversity of nematodes at the level of in abundance,diversity indices,and trophic *** highest nematode density and diversity coincided with

关键词： meiofauna nematodes sandy intertidal zone sediment grain size Yellow Sea

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