Relationship between diatom communities and environmental conditions at Honghe wetland, China

Relationship between diatom communities and environmental conditions at Honghe wetland, China
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红河湿地硅藻群落与环境条件的关系

DOI:
10.5897/ajb11.2235
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发表时间:
2011-11
影响因子:
--
通讯作者:
Liu, Yixin
Liu, Yixin
中科院分区:
--
文献类型:
--
作者:
Zhang, Nannan;Fan, Yawen;Liu, Yixin

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在位于中国东北部的红河湿地不同地点,研究了硅藻种类与实测环境变量的关系。2007年5月至10月和2008年5月至10月,确定了湿地中的浮游和附生硅藻组合。采用正向选择和蒙特卡罗排列的典型对应分析,研究了它们与环境变量的关系。结果表明,pH、总磷(TP)、总氮(TN)、总有机碳(TOC)、生化需氧量(BOD)、化学需氧量(COD)、溶解氧(DO)和水温(WT)等8个环境变量对硅藻类群的影响具有统计学意义。研究表明,DO是影响湿地硅藻群落的最重要的环境变量。结果还表明,红河湿地的水质类型为少、中两类。
The relationship between diatom species and measured environmental variables was explored at different sites of Honghe wetland region located in northeastern China. Planktonic and epiphytic diatom assemblages in the wetland were identified from May to October of 2007 and 2008. Their relationships with environmental variables were examined using canonical correspondence analysis with forward selection and Monte Carlo permutation. The test revealed that each of the eight environmental variables, pH, total phosphorus (TP), total nitrogen (TN), total organic carbon (TOC), biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved Oxygen (DO) and water temperature (WT) were statistical significant fractions of the variation in diatom taxa. This study reveals that DO was the most important environmental variables affecting diatom communities in the wetland. It also indicated that water quality in Honghe wetland were oligosaprobic and mesosaprobic.
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