Distribution pattern of macrobenthic assemblages along a salinity gradient in the Hangzhou Bay and its adjacent waters  

作　　者：Runxuan Yan Xiaobo Wang Songyao Peng Qingxi Han 

机构地区：[1]School of Marine Sciences,Ningbo University,Ningbo 315211,China [2]Marine Environmental Monitoring Center of Ningbo,Ministry of Natural Resources,Ningbo 315012,China [3]Pearl River Water Resources Research Institute,Guangzhou 510611,China [4]College of Oceanography,Hohai University,Nanjing 210098,China [5]Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,China [6]Yuzhi Environmental Technology(Zhejiang)Co.,Ltd.,Ningbo 315199,China

出　　处：《Acta Oceanologica Sinica》2023年第9期79-89,共11页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 42076156 and 41676139;the K.C. Wong Magna Fund in Ningbo University。

摘　　要：It is widely acknowledged that the distribution of macrobenthos is affected by salinity, but the degree of influence varies in different areas. To explore the distribution pattern of macrobenthic assemblages in the Hangzhou Bay,12 stations were sampled to collect macrobenthos and the corresponding bottom water. Changes in the general characteristics of macrobenthos along the salinity gradient in the Hangzhou Bay and its adjacent waters were considered. Three dominant species were identified, including the polychaetes Sternaspis chinensis, the crustacea Oratosquilla oratoria and the echinoderm Ophiuroglypha kinbergi. And the macrobenthic assemblages showed a zonal distribution along with the salinity change. The correlation analyses showed that salinity, depth,temperature, suspended solids and dissolved oxygen had concurrent significant correlations with carnivorous group, Margalef species richness(d), Brillouin index(H) and Shannon-Wiener diversity index(H'). In light of the strong correlation between salinity and Changjiang River diluted water, which produces considerable disturbances by freshwater inflows, the deposition of suspended solids and the resuspension of seabed sediments,the combined environmental disturbances, instead of salinity alone, should be adopted to explain the zonation distribution pattern of macrobenthic assemblages.

关 键 词：MACROBENTHOS dominant species functional groups environmental disturbances 

分 类 号：P73[天文地球—海洋科学]