长荡湖浮游动物群落结构特征及影响因子分析
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摘要
为了解长荡湖浮游动物群落结构特征以及与环境因子的关系,于2016年1～12月对长荡湖浮游动物和水质理化指标进行监测、分析。结果显示:长荡湖浮游动物共有48属74种,其中原生动物17属23种,占总种类的31.1%;轮虫15属30种,占总种类的40.5%;枝角类8属10种,占总种类的13.5%;桡足类8属11种,占总种类的14.9%。小型浮游动物(轮虫、原生动物)的生物数量和种类所占比例较高,而大型浮游动物(甲壳动物)所占比例较低。浮游动物生物密度年均为2653.6 ind./L,生物量年均为3.7027 mg/L。Pearson相关性分析表明:水温与角突臂尾轮虫、简弧象鼻溞和广布中剑水蚤呈极显著的正相关关系;p H与多肢轮虫呈显著的正相关关系,与钟形钟虫呈显著的负相关关系。
In order to understand the structure characteristics of zooplankton community and the relationship with environmental factors in Changdang Lake, the physical and chemical indicators of zooplankton and water quality in Changdang Lake were monitored and analyzed from January to December 2016. The results showed that there were 74 species of zooplankton belonging to 48 genera in Changdang Lake, among which 17 genera and 23 species of protozoa accounted for 31.1% of the total species, 15 genera and 30 species of rotifers accounted for 40.5% of the total species, 8 genera and 10 species of Cladocera accounted for 13.5% of the total species, and 8 genera and 11 species of copepods accounted for 14.9% of the total species. The proportion of biomass and species of small zooplankton(rotifers and protozoa)was higher than that of large zooplankton(crustaceans). The annual biomass of zooplankton was 2653.6 ind./L and biomass was 3.7027 mg/L. Pearson correlation analysis showed that water temperature was positively correlated with Brachionus keratoides, Simple-arc elephant-nosed Daphnia elephant and Cyclops diffusely distributed, while pH was positively correlated with rotifers polypod and negatively correlated with bell-shaped rotifers.
In order to understand the structure characteristics of zooplankton community and the relationship with environmental factors in Changdang Lake, the physical and chemical indicators of zooplankton and water quality in Changdang Lake were monitored and analyzed from January to December 2016. The results showed that there were 74 species of zooplankton belonging to 48 genera in Changdang Lake, among which 17 genera and 23 species of protozoa accounted for 31.1% of the total species, 15 genera and 30 species of rotifers accounted for 40.5% of the total species, 8 genera and 10 species of Cladocera accounted for 13.5% of the total species, and 8 genera and 11 species of copepods accounted for 14.9% of the total species. The proportion of biomass and species of small zooplankton(rotifers and protozoa)was higher than that of large zooplankton(crustaceans). The annual biomass of zooplankton was 2653.6 ind./L and biomass was 3.7027 mg/L. Pearson correlation analysis showed that water temperature was positively correlated with Brachionus keratoides, Simple-arc elephant-nosed Daphnia elephant and Cyclops diffusely distributed, while pH was positively correlated with rotifers polypod and negatively correlated with bell-shaped rotifers.
引文
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[4]杨金艳,徐勇,高小平,等.尚湖浮游植物时空变化特征及影响因素分析[J].江苏水利,2017(12):1-6.
[5]陶雪梅,王先云,王丽卿,等.滆湖后生浮游动物群落结构研究[J].生态与农村环境学报,2013,29(1):81-86.
[6]赵苇航,朱彧,朱亮,等.长荡湖水环境变化趋势及其主要影响因子[J].水资源保护,2014,30(6):48-53.