Community structure and spatial distribution of macrobenthos in the shelf area of the Bering Sea-中国期刊网

摘要 FieldinvestigationsofmarinemacrobenthoswereconductedattensitesintheBeringSeainJuly2010.Altogether90speciesofmacrobenthosbelongingto59familiesand78generawereidentified.Amongthem,41polychaetes,16mollusks,23crustaceans,threeechinoderms,twocnidarians,onenemertean,onepriapulid,twosipunculids,andoneechiuranwereidentified.Theaveragedensityandbiomassoftotalmacrobenthoswere984ind./m2and1207.1g/m2ofwetweight,respectively.ThepredominantspeciesinthestudyareawereScoloplosarmiger,Eudorellapacifica,Ophiurasarsii,Heteromastusfiliformis,Ennuculatenuis,andHarpiniopsisvadiculusbyabundance,whilethepredominantspeciesinthisareawasEchinarachniusparmabybiomass.Hierarchicalclusteranalysis(Bray–Curtissimilaritymeasure)revealedthattwoimportantbenthicassemblagesinthestudyareawereCommunityAandCommunityB.CommunityAwasstableandCommunityBwasunstable,asshownbytheAbundance/BiomassComparisons(ABC)approach.ThemacrobenthiccommunitystructureintheshelfoftheBeringSeawascharacterizedbyitshighabundanceandbiomass,highproductivitybutgreatheterogeneity.

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Community structure and spatial distribution of macrobenthos in the shelf area of the Bering Sea

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Community structure and spatial distribution of macrobenthos in the shelf area of the Bering Sea

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