Nadarajah Nalina, Allen D Grant, Fulthorpe Roberta R
Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, Canada M5S 3E5.
Water Res. 2007 Jun;41(12):2563-71. doi: 10.1016/j.watres.2007.02.002. Epub 2007 Apr 19.
The effect of temperature fluctuations on bacterial community structure and function in lab-scale sequencing batch reactors treating bleached kraft mill effluent was investigated. An increase in temperature from 30 to 45 degrees C caused shifts in both bacterial community structure and function. Triplicate reactors were highly similar for 40 days following startup. After the temperature shift, their community structure and function started to diverge from each other and from the control. A multi-response permutation procedure confirmed that the variability in community structure between transient and control reactors were greater than that among the triplicate transient reactors. The fact that these disturbances manifest themselves in different ways in apparently identical reactors suggests a high degree of variability between replicate systems.
研究了温度波动对处理漂白硫酸盐浆厂废水的实验室规模序批式反应器中细菌群落结构和功能的影响。温度从30℃升高到45℃导致细菌群落结构和功能都发生了变化。启动后40天内，三个重复反应器高度相似。温度转变后，它们的群落结构和功能开始相互背离，并与对照反应器不同。多响应排列程序证实，瞬态反应器与对照反应器之间群落结构的变异性大于三个重复瞬态反应器之间的变异性。这些干扰在看似相同的反应器中以不同方式表现出来，这一事实表明重复系统之间存在高度变异性。
