The influence of water-sediment regulation on macrobenthic community structures in the Huanghe River(Yellow River)Estuary during 2012–2016  

作　　者：Shaowen Li Fan Li Xiukai Song Mingliang Zhang 

机构地区：[1]Shandong Provincial Key Laboratory of Restoration for Marine Ecology,Shandong Marine Resource and Environment Research Institute,Yantai 264006,China

出　　处：《Acta Oceanologica Sinica》2020年第10期120-128,共9页海洋学报（英文版）

基　　金：Foundation item:The Shandong Provincial Natural Science Foundation under contract No.ZR2018PD011;the Science and Technology Innovation Development Program of Yantai under contract No.2020MSGY061;the National Key Research and Development Program of China under contract No.2018YFC1407605.

摘　　要：To determine if water-sediment regulation has affected macrobenthic community structure in the Huanghe River Estuary,China,macrobenthic samples were collected following regulation events from 2012 to 2016.We identify seven phyla and 138 macrobenthic species from within samples throughout the survey area,over time.Species richness and abundance in 2012 were significantly higher than in 2016.Biomass did not differ significantly during 2012–2016.Dominant species were mostly small polychaetes,with mollusks,arthropods,and echinoderms all being relatively rare.In 2016,dominant species were small polychaetes.MDS reveals macrobenthic communities at all surveyed distances from the estuary to have become the same community structure over time.Shannon-Wiener diversity and Margalef richness indexes trended down over time.CCA reveals the most dominant sediment-dwelling species to prefer lower dissolved oxygen,sulfides,and pH,and sediments with high D50 and low clay content.We speculate that water-sediment regulation has affected seabed communities,particularly Region A in our survey area.

关 键 词：Huanghe River Estuary MACROBENTHOS water-sediment regulation community structure 

分 类 号：Q958.8[生物学—动物学]