OB33B:
Life, Material Transport, and Element Cycling in the Hadal Realm I

Session ID#: 93136

Session Description:
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.
Co-Sponsor(s):
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • ME - Marine Ecology and Biodiversity
  • MM - Microbiology and Molecular Ecology
Index Terms:

4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: BIOLOGICAL]
Primary Chair:  Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark
Co-chairs:  Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, Matthias Zabel, Univ Bremen, Bremen, Germany and Doug 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, Denmark
Moderators:  Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark and Doug 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, Denmark

Abstracts Submitted to this Session:

Deposition and early diagenesis of organic material in Hadal trenches. (650310)
Ronnie N Glud1, Bo Thamdrup2, Matthias Zabel3, Morten Larsen1, Anni Glud1, Hamed Sanei4, Robert Turnewitsch5, Kazumasa Oguri6, Alan J Jamieson7, Heather Ann Stewart8, Ashley Alun Rowden9 and Frank Wenzhofer10, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)University of Southern Denmark, Odense, Denmark, (3)MARUM – Cen­ter for Mar­ine En­vir­on­mental Sci­ences, Uni­versity of Bre­men, Bremen, Germany, (4)Aarhus University, Department of Geoscience, Aarhus C, Denmark, (5)Scottish Association for, Oban, Argyll, United Kingdom, (6)Japan A Marine-Earth Sci Tech, Yokosuka, Japan, (7)Newcastle University, School of Natural and Environmental Science, Tyne and Wear, United Kingdom, (8)British Geological Survey, Energy and Marine Geosciences, Edinburgh, United Kingdom, (9)National Institute of Water & Atmospheric Research, Wellington, New Zealand, (10)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany
Controls on microbial community composition in hadal trench sediments (649956)
Clemens Schauberger1, Bo Thamdrup2, Mathias Middelboe3, Blandine Trouche4, Sophie Arnaud Haond4, Lois Maignien5 and Ronnie N Glud1, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)University of Southern Denmark, Odense, Denmark, (3)University of Copenhagen, Department of Biology, København K, Denmark, (4)IFREMER, Plouzané, France, (5)University of Western Brittany, Brest, France
Comparisons of Microbial Life in the Kermadec and Mariana Trenches (642182)
Doug Bartlett, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Pressure-Retaining Sampler and High-Pressure Systems to Study Deep-Sea Microbes Under In Situ Conditions (650312)
Marc Garel1, Patricia Bonin1, Severine Martini2, Sophie Guasco1, Marie Roumagnac1, Nagib Bhairy1, Fabrice Armougom1 and Christian Tamburini3, (1)Aix Marseille Université, CNRS/INSU,IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Marseille, France, (2)Laboratoire d’Océanographie de Villefranche (LOV), UMR 7093, Sorbonne Université, Villefranche-sur-Mer, France, (3)Aix Marseille Univ., Université Toulon, CNRS, IRD, MIO UM 110, Mediterranean Institute of Oceanography, Marseille, France; Mediterranean Institute of Oceanography, Marseille, France
Response of Epipelagic Marine Microorganisms to High Hydrostatic Pressure: “Marine Snow” Experiments in a Rotating Pressure Tank (643932)
Peter Stief1, Morten Larsen2 and Ronnie N Glud2,3, (1)University of Southern Denmark, Department of Biology, Odense M, Denmark, (2)University of Southern Denmark, Department of Biology, Odense, Denmark, (3)Tokyo University of Marine Science and Technology, Department of Ocean and Environmental Sciences, Tokyo, Japan
Distribution and Drivers of Benthic Biodiversity in Hadal and Abyssal Realms through eDNA based Inventorie (642035)
Sophie Arnaud Haond1, Miriam I Brandt2, Blandine Trouche1, Nicolas Henry3, Ariane Atteia4, Julie Poulain5, Patrick Wincker6, Colomban de Vargas7, Matthias Zabel8, Frank Wenzhofer9, Ronnie N Glud10 and Daniela Zeppilli11, (1)IFREMER, Plouzané, France, (2)IFREMER, MARBEC, Sète, France, (3)Sorbonne Université, CNRS, Station Biologique de Roscoff, Roscoff, France, (4)CNRS, MARBEC, Sète, France, (5)Genoscope, Evry, France, (6)CEA–Institut de Génomique, GENOSCOPE, Evry, France, France, (7)Station Biologique de Roscoff, Sorbonne Université & CNRS, Roscoff, France, (8)Univ Bremen, Bremen, Germany, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, (10)University of Southern Denmark, Department of Biology, Odense, Denmark, (11)IFREMER, EEP-LEP, Plouzané, France
Ecology of meiofauna of the Atacama Trench – bathymetric variation and comparison with the less productive Kermadec Trench (646093)
Daniela Zeppilli, IFREMER, EEP-LEP, Plouzané, France, Mauricio Shimabukuro, IFREMER, REM/EEP/LEP, Plouzané, France, Daniel Leduc, National Institute of Water and Atmospheric Research, Wellington, New Zealand, Matthias Zabel, Univ Bremen, Bremen, Germany, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark and Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany
Hadal Bait-Attending Fish of the Atacama Trench (Western South America) Including New Snailfish (Liparidae) Species (647522)
Thomas Linley1, Mackenzie E Gerringer2, Amy Scott-Murray3, Johanna Weston1, Heather Ritchie4 and Alan J Jamieson1, (1)Newcastle University, School of Natural and Environmental Science, Tyne and Wear, United Kingdom, (2)SUNY at Geneseo, Geneseo, NY, United States, (3)The Natural History Museum, London, 3D Scanning and Visualisation Laboratory, Imaging and Analysis Centre, London, United Kingdom, (4)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan