Karst spring microbial diversity differs across an oxygen-sulphide ecocline and reveals potential for novel taxa discovery
作者: Janez MulecAnnette Summers Engel
作者单位: 1Karst Research Institute ZRC SAZU Titov trg 2 6230 Postojna
2Department of Earth and Planetary Sciences, University of Tennessee
刊名: Acta Carsologica, 2019, Vol.48 (1)
来源数据库: ZRC SAZU, Založba ZRC
DOI: 10.3986/ac.v48i1.4949
原始语种摘要: Strong geochemical gradients of dissolved oxygen and sulphide establish habitats where specialized bacterial and archaeal taxonomic groups occupy specific redox-sensitive niches, primarily based on metabolic and ecological requirements. In contrast, knowledge of microeukaryote diversity and their ecology in redox-stratified habitats is poor, as species-specific occupation of such geochemical gradients has not been well established. Here we assessed total microbial diversity from rRNA genes retrieved from two morphologically distinct microbial mats formed along an oxygen-sulphide gradient in the outflow channel from the Žveplenica sulphidic karst spring, Slovenia. Microbial mats contained diverse bacteria and archaea associated with chemolithoautotrophic and primary productivity, and...
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  • oxygen 
  • microbial 微生物的
  • sulphide 硫化物
  • ecocline 生态倾群
  • bacterial 细菌的
  • diversity 差异
  • anoxic 缺氧症的
  • biofilm 生物薄膜
  • conditions 条件式
  • geochemical 地球化学的