首页> 外文期刊>Journal of Freshwater Ecology >Colonization dynamics of trophic-functional patterns of PFU protozoan communities in Dongchang Lake, northern China
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Colonization dynamics of trophic-functional patterns of PFU protozoan communities in Dongchang Lake, northern China

机译:中国北方东昌湖PFU原生动物群落营养功能模式的定殖动态

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摘要

The colonization dynamics of trophic-functional patterns of protozoan communities were studied based on a dataset collected using the polyurethane foam unit (PFU) method in a man-made lake in northern China from April to May 2006. The protozoa represented different trophic-functional groups during the colonization process. Only some trophic-functional groups, e.g., photoautotrophs (flagellates) and bacterivores (mainly ciliates), occurred within the PFU protozoan communities at the initial stage (3–6 days), while more trophic-functional groups, e.g., photoautotrophs, bacterivores (mainly ciliates and sarcodines), non-selectives (mainly ciliates and sarcodines), raptors (mainly ciliates), and algivores (mainly ciliates), contributed to the communities with increased species richness at the transitional (9 days), equilibrium (12–15 days) and decline (18–22 days) stages. The colonization curve of total protozoan communities significantly fitted the MacArthur–Wilson model. However, of five trophic-functional groups recorded, only bacterivores colonized in a colonization curve that significantly fitted the above equation model. These findings may provide necessary understandings for colonization dynamics of PFU protozoan communities in freshwater ecosystems.
机译:基于2006年4月至5月在中国北方的一个人造湖中使用聚氨酯泡沫单位(PFU)方法收集的数据集,研究了原生动物群落营养功能模式的定殖动力学。原生动物代表不同的营养功能群体在殖民化过程中。在初始阶段(3-6天),PFU原生动物群落中仅出现一些自养功能群,例如光自养生物(鞭毛虫)和噬菌体(主要是纤毛虫),而更多自养功能群,例如光自养生物,噬菌体(主要是纤毛虫和肉孢子虫),非选择虫(主要纤毛虫和肉孢子虫),猛禽(主要纤毛虫)和食虫动物(主要纤毛虫)在过渡期(9天),平衡(12-15)增加了物种丰富度。天)和下降(18-22天)阶段。整个原生动物群落的定殖曲线与MacArthur-Wilson模型非常吻合。但是,在记录的五个营养功能组中,只有细菌菌落在明显符合上述方程模型的定殖曲线中。这些发现可能为在淡水生态系统中PFU原生动物群落的定殖动态提供必要的理解。

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