Seasonal variation and principle of cyanobacterial biomass and forms in the water source area of Chaohu City, China
Seasonal variation and principle of cyanobacterial biomass and forms in the water source area of Chaohu City, China
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DOI：
10.1007/s00343-015-4154-2
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发表时间：
2015
影响因子：
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通讯作者：
Xiangen Xu;Fan Ke;Wenchao Li;Muhua Feng;Lixia Shang;Fan Fan-Fan;Y. He
中科院分区：
文献类型：
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作者：
Xiangen Xu;Fan Ke;Wenchao Li;Muhua Feng;Lixia Shang;Fan Fan-Fan;Y. He
我们调查了蓝藻生物量的季节变化及其优势种群的形式（M。2011年12月至2012年10月对巢湖市水源地铜绿假单胞菌（aeruginosa）的污染特征及其与环境因子的相关性进行了研究。结果表明，巢湖市水源地浮游植物生物量中蓝藻门种类所占比例最大，优势种群为M.铜绿。2012年3月至8月蓝藻生物量的变化与Logistic生长模型拟合较好。蓝藻生长速率在6月份最高，生物量在8月份达到最大值。2012年2 - 3月，M. aerodiosa为单细胞型;M.铜绿假单胞菌从四月开始出现，五月水面出现水华。菌落直径在7月份达到最大值，8月份开始逐渐减小。M.气单胞菌菌落直径为18.37-237.77 μm，以20-200 μm的菌落最多，占样品总数的95.5%。温度和光合有效辐射可能是影响M年变化的最重要因子。气生生物量和形态。蓝藻生长的适宜温度为15-30°C。在自然水体中，光合有效辐射对M.铜绿假单胞菌（P<0.01）。
We investigated seasonal variations in cyanobacterial biomass and the forms of its dominant population (M. aeruginosa) and their correlation with environmental factors in the water source area of Chaohu City, China from December 2011 to October 2012. The results show that species belonging to the phylum Cyanophyta occupied the maximum proportion of phytoplankton biomass, and that the dominant population in the water source area of Chaohu City wasM. aeruginosa. The variation in cyanobacterial biomass from March to August 2012 was well fitted to the logistic growth model. The growth rate of cyanobacteria was the highest in June, and the biomass of cyanobacteria reached a maximum in August. From February to March 2012, the main form ofM. aeruginosawas the single-cell form;M. aeruginosacolonies began to appear from April, and blooms appeared on the water surface in May. The maximum diameter of the colonies was recorded in July, and then gradually decreased from August. The diameter range ofM. aeruginosacolonies was 18.37–237.77 μm, and most of the colonies were distributed in the range 20–200 μm, comprising 95.5% of the total number of samples. Temperature and photosynthetically active radiation may be the most important factors that influenced the annual variation inM. aeruginosabiomass and forms. The suitable temperature for cyanobacterial growth was in the range of 15–30°C. In natural water bodies, photosynthetically active radiation had a significant positive influence on the colonial diameter ofM. aeruginosa(P<0.01).