论文
论文标题: Prevalence of ammonia-oxidizing bacteria over ammonia-oxidizing archaea in sediments as related to nutrient loading in Chinese aquaculture ponds
作者: Zhou, Zijun; Li, Hui; Song, Chunlei; Cao, Xiuyun; Zhou, Yiyong
出版刊物: JOURNAL OF SOILS AND SEDIMENTS
出版日期: JUL
出版年份: 2017
卷/期: 7
DOI: 10.1007/s11368-017-1651-2
论文摘要: Purpose Nitrogen (N) application in excess of assimilatory capacity for aquaculture ponds can lead to water-quality deterioration through ammonia accumulation with toxicity to fish. Ammonia-oxidizing archaea (AOA) and bacteria (AOB) potentially process extra ammonium, so their abundance and diversity are of great ecological significance. This study aimed to reveal variations in communities of AOA and AOB as affected by aquaculture activities. Materials and methods From June to September 2012, water and sediments were sampled monthly in three ponds feeding Mandarin fish in a suburb of Wuhan City, China. Molecular methods based on ammonia monooxygenase (amoA) gene were used to determine abundance and diversity of AOA and AOB in the sediments. Results and discussion The pond with the highest fish stock had the highest nutrient loadings in terms of different forms of N and carbon (C) in both sediment and water. The abundance and diversity of AOB were significantly higher than those of AOA in the sediment. The AOB abundance showed a significantly positive relationship to concentration of soluble reactive phosphorus (SRP) in interstitial water, and both abundance and diversity of AOA were significantly negative to concentration of ammonium in interstitial water. Furthermore, AOA species affiliated to Nitrososphaera-like and Nitrosophaera Cluster was distinguishable from those observed in other aquaculture environments. Conclusions Nutrients in sediment were enriched by intensive aquaculture activity, among which organic N and C, together with ammonium and SRP, shaped the communities of ammonia oxidizers, with AOB dominating over AOA in terms of abundance and diversity.
== 实验室与学会 ==
  • == 实验室与学会 ==
  • 淡水生态与生物技术国家重点实验室
  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
  • 武汉白暨豚保护基金会
  • 湖北省海洋湖沼学会
  • 中国动物学会原生动物学分会
  • 中国动物学会斑马鱼分会
  • 湖北省暨武汉动物学会
  • 中国水产学会鱼病学专业委员会
  • 中国鱼类学会
== 平台建设 ==
  • == 平台建设 ==
  • “一带一路”海域赤潮数据库
  • 国家水生生物种质资源库
  • 国家斑马鱼资源中心
  • 中国科学院淡水藻种库
  • 中国科学院武汉生命科学大型仪器区域中心
  • 湿地生态系统观测研究野外站联盟
  • 中国科学院水生生物研究所分析测试中心
  • 中国科学院超级计算武汉分中心
  • 水生生物博物馆
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  • 湖北省生态环境厅
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