OB31B:
Marine Sediments: Fluxes, Fauna, and Forecasting I

Session ID#: 93153

Session Description:
Marine sediments are home to a diverse assemblage of microbes and, as a result, are the setting for a wide array of biogeochemical cycles. From permeable sands to organic-rich muds, these environments support larger communities of benthic flora and fauna who, in turn, enhance biogeochemical cycling through bioturbation, nutrient delivery, and microbial gardening. Physical processes, such as advective flow and fluctuations in temperature, can lead to oscillating redox boundaries and altered rates of carbon burial. As sampling and research techniques have become more advanced, appreciation for the role of marine sediments in global biogeochemical cycles has grown. However, many marine sediment environments remain understudied and face a variety of immediate concerns, such as bottom trawling, seabed mining, deoxygenation in the overlying water, and increased sediment deposition following terrestrial soil erosion events. This session will combine modeling, laboratory, and field-based studies, especially ones that are multidisciplinary in nature, in an effort to further our understanding of marine sediments and more precisely predict their response to changing ocean conditions. Abstract topics may include, but are not limited to, biogeochemical fluxes, bioturbation/bioirrigation processes, organismal/microbial community structure and function, biophysical coupling, and human-mediated disturbances.
Co-Sponsor(s):
  • ME - Marine Ecology and Biodiversity
  • MG - Marine Geology and Sedimentology
  • PI - Physical-Biological Interactions
Index Terms:

3022 Marine sediments: processes and transport [MARINE GEOLOGY AND GEOPHYSICS]
4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL]
Primary Chair:  Heili Lowman, University of Nevada, Reno, Department of Natural Resources & Environmental Science, Reno, United States
Co-Chair:  Tina Treude, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States; University of California Los Angeles, Atmospheric and Oceanic Science Department, Los Angeles, United States
Primary Liaison:  Heili Lowman, University of Nevada, Reno, Department of Natural Resources & Environmental Science, Reno, United States
Moderators:  Heili Lowman, University of Nevada, Reno, Department of Natural Resources & Environmental Science, Reno, United States and Tina Treude, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Student Paper Review Liaison:  Tina Treude, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany

Abstracts Submitted to this Session:

OB31B-01
The effect of anthropogenically induced sediment disturbances on carbon mineralisation pathways in coastal sediments (638793)
Sebastiaan van de Velde, University of California, Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States and Filip J R Meysman, Universiteit Antwerpen, Department of Biology, Antwerpen, Belgium
OB31B-02
Diversity of benthic diatoms inhabiting on/in the sediment of mangroves in Indonesia (649064)
Ayu Lana Lana Nafisyah1,2, Ayami Hagiwara3, Yuji Sakuno4, Endang Dewi Masithah2 and Kazuhiko Koike3, (1)Hiroshima University, Graduate School of Biosphere Science, Higashi-Hiroshima, Japan, (2)Universitas Airlangga, Fisheries and Marine Faculty, Surabaya, Indonesia, (3)Hiroshima University, Graduate School of Integrated Sciences for Life, Higashi-Hiroshima, Japan, (4)Hiroshima University, Graduate School of Engineering, Higashi-Hiroshima, Japan
OB31B-03
Evidence of Changes in Sedimentation Rate and Sediment Fabric in a Low Oxygen Setting: Santa Monica Basin, CA (646546)
Nathaniel James Kemnitz1, William Berelson1, Douglas E Hammond2 and Tina Treude3, (1)University of Southern California, Earth Sciences, Los Angeles, CA, United States, (2)University of Southern California, Department of Earth Science, Los Angeles, CA, United States, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
OB31B-04
Scaling-up ecosystem functions of marine soft sediments combining field data and drone imagery. (657374)
Stefano Schenone and Simon F. Thrush, University of Auckland, Institute of Marine Science, Leigh Marine Laboratory, Auckland, New Zealand
OB31B-05
Environmental constraints of microbial carbon dynamics in hydrothermally impacted sediments of the Guaymas Basin (654822)
Andy Montgomery1, Guangchao Zhuang1, Kimberley Hunter2, Andreas Teske3 and Samantha Benton Joye4, (1)University of Georgia, Department of Marine Sciences, Athens, GA, United States, (2)University of Georgia, Marine Sciences, Athens, GA, United States, (3)Univ of North Carolina, Marine Science, Chapel Hill, United States, (4)Univ Georgia, Department of Marine Sciences, Athens, GA, United States
OB31B-06
Sequestration of Methane by Symbiotic Deep-Sea Annelids: Ancient and Future Implications of Redefining the Seep Influence (642002)
Shana Goffredi, Occidental College, Los Angeles, CA, United States, Ekin Tilic, University of Bonn, Germany, Lisa A Levin, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, Greg W. Rouse, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Erik E Cordes, Temple University, Philadelphia, PA, United States and Victoria J Orphan, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States
OB31B-07
Living with the Toxic Legacy of DDT, Floods Accelerating the Pathway from Catchments to the Coast (656762)
Nathaniel Deering1, Simon Albert1, Maia Dupes2, Craig Wilson3, Jessica Rudd3 and Alistair Robert Grinham4, (1)The University of Queensland, Aquatic Systems Research Group, School of Civil Engineering, Brisbane, QLD, Australia, (2)Virginia Polytechnic Institute and State University, Blacksburg, United States, (3)The Port of Brisbane Pty Ltd, QLD, Australia, (4)The University of Queensland, School of Civil Engineering, Brisbane, QLD, Australia
OB31B-08
In Situ Techniques for Measuring Carbonate Chemistry in Deep-Sea Pore Waters (647244)
Jaclyn E Pittman Cetiner, PhD1, Nick Rollins1, Jess F Adkins2 and William Berelson3, (1)University of Southern California, Los Angeles, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)University of Southern California, Earth Sciences, Los Angeles, CA, United States
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