Testate amoebae as indicators of water quality and contamination in shallow lakes of the Middle and Lower Yangtze Plain
Testate amoebae as indicators of water quality and contamination in shallow lakes of the Middle and Lower Yangtze Plain
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测试阿米巴原虫作为长江中下游平原浅水湖泊水质和污染的指标
DOI：
10.1007/s12665-016-5442-7
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发表时间：
2016-04
影响因子：
2.8
通讯作者：
Xie Shucheng
中科院分区：
文献类型：
--
作者：
Qin Yangmin;Payne Richard;Yang Xiangdong;Yao Min;Xue Jiantao;Gu Yansheng;Xie Shucheng
睾丸变形虫是一种微生物，其特征是具有包围细胞质的凝集或自生外壳。遗嘱变形虫已被广泛认为是一系列生态系统（如土壤、泥炭地和湖泊）中有价值的生物指示剂。与其他微生物相比，使用有遗嘱变形虫作为水生生态系统水质生物指示剂的情况要少得多，而且先前的研究受到地域限制。我们调查了大范围的环境变量及其关系，对中国长江中下游平原 37 个浅水湖泊的变形虫群落进行了调查。采用多因素分析、冗余分析（RDA）和前向选择方法来探索整体群落结构以及环境变量和有遗嘱阿米巴原虫组成之间的联系。结果表明，尽管污染程度很高，但有睾丸变形虫广泛分布在大多数湖泊中。我们的数据强调了水质变量和遗嘱阿米巴群落之间的一些联系。特别是，我们的结果表明，重金属在塑造睾丸变形虫组合结构中发挥作用，尽管相关性相对较弱，可能是由于滞后反应。我们的结果支持了之前的建议，即有遗嘱变形虫可能是水生生态系统中有用的生物指示剂，但强调需要改进机制理解。
Testate amoebae are micro-organisms characterized by an agglutinated or autogenous shell enclosing the cytoplasm. Testate amoebae have been widely proposed as valuable bioindicators in a range of ecosystems (such as soils, peatlands and lakes). The use of testate amoebae as bioindicators of water quality in aquatic ecosystems is much less developed than for other microorganisms and previous research is geographically restricted. We investigated a large range of environmental variables and their relations to testate amoeba communities from 37 shallow lakes in the middle and lower Yangtze River Plain of China. Multiple factor analysis, redundancy analysis (RDA) and a forward-selection approach were used to explore the overall community structure and the links between the environmental variables and testate amoeba composition. Results showed that testate amoebae are widely distributed in most of the lakes despite often high levels of pollution. Our data highlight some links between water quality variables and testate amoeba communities. In particular, our results suggest that heavy metals have a role in shaping testate amoeba assemblage structure, although correlations are comparatively weak, perhaps due to lagged responses. Our results support previous suggestions that testate amoebae may be useful bioindicators in aquatic ecosystems but emphasize the need for an improved mechanistic understanding.
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影响因子：
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作者：
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