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Rotifer community structure and its response to environmental factors in the Backshore Wetland of Expo Garden,Shanghai

查看全文 作　　者：Liping [1,2,3]Yin;Yu [1,2,3]Ji;Yinjiang [4]Zhang;Linxuan [1,2,3]Chong;Lijing [1,2,3]Chen 高影响力作者 机构地区：[1]National Demonstration Center for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai 201306,China;[2]Key Laboratory of Freshwater Aquatic Genetic Resources,Ministry of Agriculture,Shanghai Ocean University,Shanghai 201306,China;[3]Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding,Shanghai Ocean University,Shanghai 201306,China;[4]Shanghai Universities Engineering Research Center of Water Ecological Environment,Shanghai Ocean University,Shanghai 201306,China高影响力机构 出　　处：《Aquaculture and Fisheries》索引2018年第3卷第2期,共8页高影响力期刊 基　　金：Project of Shanghai Municipal Committee of Fisheries Animal Genetics and Breeding Center of Shanghai Collaborative Innovation Center(ZF1206);National Science and Technology Commission of Scientific and Technological Research of Expo special(2005ba908b23);Shanghai Science and Technology Commission Expo special(05dz05823)。 摘　　要：We investigated rotifer community structure in the Backshore Wetland of the Expo Garden in Shanghai from September 2009 to August 2010.We identified 116 rotifer species,determined the dominant species and their relationships with environmental factors,and community diversity indices.Polyarthra trigla was the most common species over the four seasons and proportionally most dominant in spring and autumn,whereas Cephalodella exigua and Keratella cochlearis were the most dominant species in winter and summer,respectively.There was seasonal variability in species numbers,with the highest numbers in summer,followed by autumn and winter.The mean annual density was 815±1346 ind./L and the biomass was 0.3649±0.4940 mg/L.There were significant differences between months:the highest density(2723±2926 ind./L)and biomass(0.7938±0.8197 mg/L)occurred in June,while the lowest density(238±271 ind./L)and biomass(0.0476±0.0429 mg/L)occurred in May.Canonical correspondence analysis(CCA)indicated that temperature,pH,nitrite nitrogen(NO2-N),and total phosphorus(TP)were the most important abiotic factors affecting rotifer distribution.Our research showed that the adaptability of the rotifers to temperature was the important factor. 关 键 词：Backshore Wetland ROTIFER Community structure Environmental factor
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