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中国有壳变形虫Argynnia(Vucetich,1974)属的修订及若干环境重建问题探讨 被引量:5
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作者 秦养民 张文静 +5 位作者 李鸿凯 Edward A. D. Mitchell enrique lara 张千帆 朱荣 顾延生 《第四纪研究》 CAS CSCD 北大核心 2011年第6期1060-1066,共7页
有壳变形虫是一类具外壳的陆相淡水根足纲(Rhizopoda)原生动物,广泛栖息于湖泊、泥炭、沼泽、土壤等各种淡水潮湿环境,由于其壳体具有很好的抗腐蚀性而在沉积物中保存下来,近年来广泛应用于泥炭和湖泊湿地的古环境重建研究中。大部分有... 有壳变形虫是一类具外壳的陆相淡水根足纲(Rhizopoda)原生动物,广泛栖息于湖泊、泥炭、沼泽、土壤等各种淡水潮湿环境,由于其壳体具有很好的抗腐蚀性而在沉积物中保存下来,近年来广泛应用于泥炭和湖泊湿地的古环境重建研究中。大部分有壳变形虫是世界广泛分布的,但是也有一些种类具有一定的地带性分布格局。形态学和分子生物学的研究均已表明阿吉尼亚虫属(Argynnia Vucetich,1974)与梨壳虫属(Nebela Leidy,1874)有较大差别,而我国传统的有壳变形虫分类系统仍将它们统一划为梨壳虫属(Nebela)。本文在对神农架大九湖泥炭湿地有壳变形虫标本形态学观察的基础上,结合前人研究资料,将阿吉尼亚虫属(Argynnia)从梨壳虫属(Nebela)中分离出来,修正了我国传统的分类系统,并讨论了其生物地理学意义,目前在我国发现该属的2个种,即具尾阿吉尼亚虫Argynnia caudata(Leidy,1876)和齿口阿吉尼亚虫Argynnia dentistoma(Penard,1890)。本文还探讨了因有壳变形虫分类标准的差异可能引起的生态学转换函数和古环境重建问题。 展开更多
关键词 有壳变形虫 阿吉尼亚虫属 梨壳虫属 湿地 环境重建
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Relationships between testate amoeba communities and water quality in Lake Donghu, a large alkaline lake in Wuhan, China 被引量:1
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作者 Yangmin QIN Bertrand FOURNIER +5 位作者 enrique lara Yansheng GU Hongmei WANG Yongde CUI Xiaoke ZHANG Edward A. D. MITCHELL 《Frontiers of Earth Science》 SCIE CAS CSCD 2013年第2期182-190,共9页
The middle Yangtze Reach is one of the most developed regions of China. As a result, most lakes in this area have suffered from eutrophication and serious environmental pollution during recent decades. The aquatic bio... The middle Yangtze Reach is one of the most developed regions of China. As a result, most lakes in this area have suffered from eutrophication and serious environmental pollution during recent decades. The aquatic biodiversity in the lakes of the area is thus currently under significant threat from continuous human activities. Testate amoebae (TA) are benthic (rarely planktonic) microorganisms characterized by an agglutinated or autogenous shell. Owing to their high abundance, preservation potential in lacustrine sediments, and distinct response to environmental stress, they are increasingly used as indicators for monitoring water quality and reconstructing palaeoenvironmental changes. However this approach has not yet been developed in China. This study presents an initial assessment of benthic TA assemblages in eight lakes of Lake Donghu in the region of Wuhan, China. Testate amoeba community structure was most strongly correlated to water pH. In more alkaline conditions, communities were dominated by Centropyxis aculeata, Difflugia oblonga, Pontigulasia compressa, Pon. elisa and Lesquereusia modesta. These results are consistent with previous studies and show that TA could be useful for reconstructing past water pH fluctuations in China. To achieve this, the next step will be to expand the database and build transfer function models. 展开更多
关键词 testate amoebae (TA) water quality water pH Lake Donghu China
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