Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
Microb Ecol. 2012 Jul;64(1):117-30. doi: 10.1007/s00248-011-0003-9.
Testate amoeba (TA) assemblages were collected in 2005 from four ponds in Komořany (Prague, Czech Republic). An analysis of seasonal taxonomic variability of TA populations and its correlation with the limnological characteristics of the area (temperature, pH, total organic carbon, nitrogen, phosphorus, heavy metals, etc.) was performed. The predominant genera were Difflugia, Arcella, and Centropyxis. The most significant changes in the TA community occurred between March and July. Arcella genus dominated in March and April; in May, Arcella and Centropyxis genera were present in the same amount; in June, Arcella genus disappeared, and Difflugia genus started to dominate the community. A multivariate redundancy analysis showed statistically significant correlations between the environmental parameters and the composition of the TA community. The results indicate a negative correlation between TA quantities and Ni, Cd, PAH, Mn, As, and Pb. TA were also affected by concentrations of NH4(+), NO3(-), and P, as well as by temperature variations. The observed correlations between the species composition and environmental parameters can be used in paleoecological interpretations of fossil TA communities. Our results also prove the suitability of TA as water quality indicators in urban areas.
2005 年，在捷克共和国布拉格的科莫兰尼（Komořany）的四个池塘中采集了有壳变形虫（TA）组合。分析了 TA 种群的季节性分类变化及其与该地区水文学特征（温度、pH 值、总有机碳、氮、磷、重金属等）的相关性。主要属为变形虫属、阿氏环藻属和辐足虫属。TA 群落中最显著的变化发生在 3 月至 7 月之间。阿氏环藻属在 3 月和 4 月占优势；5 月，阿氏环藻属和辐足虫属的数量相同；6 月，阿氏环藻属消失，变形虫属开始主导群落。多元冗余分析显示，环境参数与 TA 群落组成之间存在统计学上的显著相关性。结果表明，TA 数量与 Ni、Cd、多环芳烃、Mn、As 和 Pb 呈负相关。TA 还受到 NH4(+)、NO3(-)和 P 的浓度以及温度变化的影响。观察到的物种组成与环境参数之间的相关性可用于化石 TA 群落的古生态学解释。我们的结果还证明了 TA 作为城市地区水质指标的适宜性。
