Environmental quality assessment of macrozoobenthos in Binzhou shallow sea waters
WANG Zhi-zhong1, ZHANG Jin-lu1, XU GUO-jing1, DUAN Deng-xuan1, SUN Tong-qiu2, WANG Yu-qing2, JING Zhong-hua2, WANG Chong2
1. Freshwater Fisheries Research Institute of Shandong Province, Shandong Provincial Key Lab for Genetics & Breeding in Freshwater Fisheries, Jinan 250013, China;
2. Marine and fisheries research institute of Binzhou city, Binzhou 256616, China
Abstract：According to the results of macrozoobenthos in binzhou shallow sea waters,with 3times survey 18 stancebeing made in 2012 spring,summer and autumn,a total of 81 macrozoobenthos species were recorded,including 27 species Mollusc,20 species annelid polychaete,18 species Crustacea,1 species Echinoderm and 5 species others.It was highest in spring (78 species),then in summer (47 species),and lowest in the autumn (39 species).Mollusc,annelid polychaete and Crustacea were the main groups in this marine benthic animals.The macrozoobenthos diversity index was 0.17~3.69,with a mean of 1.73±0.22;Richness index was 0.59~3.05,with a mean of 1.75±0.24; Evenness index was 0.04~1.00,with a mean of 0.46±0.10; Dominance index was 1.03~10.76,with a mean of 3.29±0.91; Diversity index,evenness index and dominance index were the highest in summer,then in autumn,and lowest in thespring,while the richness index washighest in spring, then in summer,and lowest in the autumn.The average of inhabit density and biomass were relatively high,which was 3836.83 ind./m2 and 48.65 g/m2,respectively.Both of them were highest inspring,then in autumn,and lowest in the summer.Molluscs was in dominant in different season,and was the highest,followed by crustaceans and polychaetes,other classes and echinoderms was relatively low.The environmental quality of binzhou shallow sea waters was slightly polluted and it was better than most of estuarine waters in our country,belonging to the good regional environmental quality.
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