Anhui Province Key Laboratory of Aquaculture & Stock Enhancement, Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
Eur J Protistol. 2022 Feb;82:125844. doi: 10.1016/j.ejop.2021.125844. Epub 2021 Oct 26.
The spatial and temporal planktonic ciliate community structure of a large shallow eutrophic lake was described in detail based on a monthly monitoring campaign over 2 years using the quantitative protargol stain approach. We found that there was a large variety and low constancy of ciliate plankton and a clear advantage of several small species. Balanion planctonicum, Rimostrombidium brachykinetum, and Urotricha farcta contributed 19.7%, 13.4%, and 10.7% to the total abundance, respectively. The ciliate community was significantly varied in different lake regions of different eutrophication levels, and the distribution of some of the main species, especially prostomatids and scuticociliatids, might be closely related to the nutrient level of the lake regions. The seasonal dynamics of ciliate taxa with similar functional feeding habits across regions at different trophic levels are more convergent than those of species with very different functions, and the top-down effect (cladocerans, rotifers), nutrition, and water temperature were the key factors shaping ciliate community structure. The results of this study accentuate the important effects of species functional diversity on community differences and may improve our knowledge of ciliate diversity and functional ecology in shallow eutrophic lakes.
基于为期两年的每月监测活动，采用定量蛋白银染色方法详细描述了大型浅水富营养化湖泊浮游纤毛虫的时空群落结构。研究发现，纤毛虫浮游生物种类繁多且稳定性低，少数几个小型物种具有明显优势。盘状钟虫、短尾钟虫和狭口旋口虫分别占总丰度的 19.7%、13.4%和 10.7%。纤毛虫群落在不同富营养化水平的湖区有显著差异，一些主要物种的分布，特别是前口目和旋口目纤毛虫，可能与湖区的营养水平密切相关。具有相似功能摄食习性的纤毛虫类群在不同营养水平的区域的季节性动态比功能差异很大的物种更趋同，而下层捕食者（枝角类、轮虫）、营养和水温是塑造纤毛虫群落结构的关键因素。本研究的结果强调了物种功能多样性对群落差异的重要影响，并可能提高我们对浅水富营养化湖泊中纤毛虫多样性和功能生态学的认识。
