The hadal zone stretches from 6 to 11 km of ocean depth and is one of the most remote, extreme, and scantly explored habitats on Earth. However, recent technological advances and the intensified search for new marine resources have stimulated hadal research and the number of publications on hadal issues is increasing rapidly. This multidisciplinary session would like to invite researchers with hadal interests to discuss recent advantages, synergies and emerging challenges across a broad range of topics covering geology, oceanography, biology and biogeochemistry. We also encourage contributions on deep sea technical advances and high-pressure research.
Primary Chair: Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark
Co-chairs: Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Bremerhaven, Germany, Matthias Zabel, Univ Bremen, Bremen, Germany and Douglas H Bartlett, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Primary Liaison: Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark
Moderators: Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark and Douglas H Bartlett, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Student Paper Review Liaison: Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark
Autonomous hadal benthic lander for in situ tracer incubations and sediment recovery to study benthic community activities (645126)
Johannes Lemburg, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Bremerhaven, Germany, Morten Larsen, University of Southern Denmark, Department of Biology, Odense, Denmark, Bo Thamdrup, University of Southern Denmark, Odense, Denmark and Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark
Benthic nitrogen cycling in hadal trenches: High rates and large contributions from anammox (642857)
Bo Thamdrup1, Clemens Schauberger1, Morten Larsen1, Anni Glud1, Frank Wenzhofer2 and Ronnie N Glud3, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Bremerhaven, Germany, (3)University of Southern Denmark, Department of Biology, Odense M, Denmark
Plankton Respiration in the Ultradeep Waters over the Atacama Trench: Implications for Particulate Organic Carbon Sequestration (652764)
Igor Fernandez-Urruzola, Universidad de Concepcion, Millennium Institute of Oceanography, Concepción, Chile, Osvaldo Ulloa, Universidad de Concepción, Concepción, Chile, Wolfgang Schneider, Millennium Institute of Oceanography (IMO) and Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense M, Denmark, Xinxin Li, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China and Ruben Escribano, Instituto Milenio de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile
Food Web Structure in the Mariana and Kermadec Trenches from Stable Isotope Analysis (650656)
Andrew Tokuda1, Mackenzie Gerringer2, Brian N Popp3, Natalie Wallsgrove3, Eleanna Grammatopoulou4, Daniel Mayor5 and Jeffrey Drazen6, (1)University of Hawaii at Manoa, Department of Oceanography, Honolulu, United States, (2)State University of New York at Geneseo, HI, United States, (3)University of Hawaiʻi at Mānoa, Department of Earth Sciences, Honolulu, United States, (4)University of Aberdeen, Aberdeen, United Kingdom, (5)National Oceanography Center, Soton, Southampton, United Kingdom, (6)University of Hawai'i at Mānoa, Department of Oceanography, Honolulu, United States
High Benthic Transfer Rates with Low Concentrations of Organic Carbon – No Contradiction in the Atacama Trench (642385)
Matthias Zabel1, Pei-Chuan Chuang2, Emmanuel Okuma1, Marcus Elvert3 and Martin Kölling4, (1)MARUM - University of Bremen, Bremen, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)MARUM - University of Bremen, Center for Marine Environmental Science, Bremen, Germany, (4)MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
Tracking Environmental Change of the Hadal Zone of the Yap Trench: from Variations of Biogeochemical Parameters in the Sediment and Seawater (641998)
Haibing Ding1, Yuhuan Huang2, Chaonan Guo3, Jiaohong Niu3, Gehui Li3, ChengJun Sun4 and Guipeng Yang5, (1)Ocean University of China, Key Laoboratory of Marine Chemistry and Technology, Ministry of Education, Qingdao, China, (2)Ocean University of China, Qingdao, China, (3)Ocean University of China, Marine Chemistry, Qingdao, China, (4)First Institute of Oceanography, Ministry of Natural Resources, Marine Resources and Environment Research Center, Qingdao, China, (5)Laval University, Quebec-Ocean, Quebec City, QC, Canada
