Spatiotemporal distributions and environmental drivers of diversity and community structure of nosZ-type denitrifi ers and anammox bacteria in sediments of the Bohai Sea and North Yellow Sea, China

  • Youjun Cai
  • Xiaoli Zhang
  • Guihao Li
  • Jun Dong
  • Anjing Yang
  • Guangyu WangEmail author
  • Xiaojian ZhouEmail author


Denitrifi cation and anammox processes are major nitrogen removal processes in coastal ecosystems. However, the spatiotemporal dynamics and driving factors of the diversity and community structure of involved functional bacteria have not been well illustrated in coastal environments, especially in human-dominated ecosystems. In this study, we investigated the distributions of denitrifi ers and anammox bacteria in the eutrophic Bohai Sea and the northern Yellow Sea of China in May and November of 2012 by constructing clone libraries employing nosZ and 16S rRNA gene biomarkers. The diversity of nosZ-denitrifi er was much higher at the coastal sites compared with the central sites, but not signifi cant among basins or seasons. Alphaproteobacteria were predominant and prevalent in the sediments, whereas Betaproteobacteria primarily occurred at the site near the Huanghe (Yellow) River estuary. Anammox bacteria Candidatus Scalindua was predominant in the sediments, and besides, Candidatus Brocadia and Candidatus Kuenenia were also detected at the site near the Huanghe River estuary that received strong riverine and anthropogenic impacts. Salinity was the most important in structuring communities of nosZ-denitrifi er and anammox bacteria. Additionally, anthropogenic perturbations (e.g. nitrogen overloading and consequent high primary productivity, and heavy metal discharges) contributed signifi cantly to shaping community structures of denitrifi er and anammox bacteria, suggesting that anthropogenic activities would infl uence and even change the ecological function of coastal ecosystems.

Key word

nosZ-denitrifier anammox community structure distribution anthropogenic perturbations 


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© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Environmental Sciences and EngineeringYangzhou UniversityYangzhouChina
  2. 2.Key Laboratory of Coastal Environmental Processes and Ecological Remendation, Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantaiChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.Shenzhen Lightsun Technology Co. Ltd.ShenzhenChina
  5. 5.Department of Bioengineering, School of Marine Science and TechnologyHarbin Institute of TechnologyWeihaiChina

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