• Ammonia-oxidizing archaea have similar power requirements in diverse marine oxic sediments 

      Zhao, Rui; Mogollon, Jose M; Roerdink, Desiree Lisette; Thorseth, Ingunn Hindenes; Økland, Ingeborg Elisabet; Jørgensen, Steffen Leth (Journal article; Peer reviewed, 2021)
      Energy/power availability is regarded as one of the ultimate controlling factors of microbial abundance in the deep biosphere, where fewer cells are found in habitats of lower energy availability. A critical assumption ...
    • Deep-sea sponge grounds as nutrient sinks: Denitrification is common in boreo-Arctic sponges 

      Rooks, Christine; Fang, James Kar-Hei; Mørkved, Pål Tore; Zhao, Rui; Rapp v/dødsbo, Hans Tore; Xavier, Joana R; Hoffmann, Friederike (Journal article; Peer reviewed, 2020-03)
      Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bioavailable nutrients such as ammonium and nitrate. In this study we challenge this view. ...
    • Geochemical transition zone powering microbial growth in subsurface sediments 

      Zhao, Rui; Mogollon, Jose M; Abby, Sophie; Schleper, Christa; Biddle, Jennifer; Roerdink, Desiree; Thorseth, Ingunn Hindenes; Jørgensen, Steffen Leth (Journal article; Peer reviewed, 2020)
      No other environment hosts as many microbial cells as the marine sedimentary biosphere. While the majority of these cells are expected to be alive, they are speculated to be persisting in a state of maintenance without net ...
    • Indigenous Ammonia-Oxidizing Archaea in Oxic Subseafloor Oceanic Crust 

      Zhao, Rui; Dahle, Håkon; Ramírez, Gustavo A.; Jørgensen, Steffen Leth (Journal article, 2020-03-10)
      Oceanic ridge flank systems represent one of the largest and leastexplored microbial habitats on Earth. Fundamental ecological questions regarding community activity, recruitment, and succession in this environment remain ...
    • Microbial inventory of deeply buried oceanic crust from a young ridge flank 

      Jørgensen, Steffen Leth; Zhao, Rui (Peer reviewed; Journal article, 2016-05-27)
      The deep marine biosphere has over the past decades been exposed as an immense habitat for microorganisms with wide-reaching implications for our understanding of life on Earth. Recent advances in knowledge concerning this ...
    • Microbial Nitrogen Cycling in the Marine Deep Biosphere 

      Zhao, Rui (Doctoral thesis, 2018-11-22)
    • Nitrifier abundance and diversity peak at deep redox transition zones 

      Zhao, Rui; Hannisdal, Bjarte; Mogollon, Josè M.; Jørgensen, Steffen Leth (Peer reviewed; Journal article, 2019-06-14)
      More than half of the global ocean floor is draped by nutrient-starved sediments characterized by deep oxygen penetration and a prevalence of oxidized nitrogen. Despite low energy availability, this habitat hosts a vast ...