OB24A:
Approaches to Study Marine Oxygen Deficient Zones from Macro to Micro Scales II Posters

Session ID#: 85864

Session Description:
Eutrophication and climate change have been implicated in the emergence and expansion of hypoxic zones in marine systems. Corresponding shifts in microbial community towards anaerobic metabolisms have resulted indecreased nitrogen bioavailability and, as by-product, the release of potent greenhouse (N2O and CH4) or toxic (H2S) gases.Besides the more frequently investigated large scale hypoxic zones (100s of m to 100s of km), ephemeral and local (mm – meters) hypoxia has also been shown to severely impact the structure and productivity of aquatic ecosystems. Current advances in measuring low dissolved oxygen concentrations (e.g., switchable trace oxygen (STOX) amperometric microsensors, optical beads, gas tension devices) at high temporal and spatial resolutions provide an increasingly comprehensive overview on the occurrence of these phenomena. However, the extent and the ecological significance of small scale, local low oxygen zones remains unresolved. This session will bring different lines of research together to a) discuss advances in analytical technology, including stable and radioisotope geochemical (13C, 15N, 14C) and metagenomic and metatranscriptomic approaches b) identify overarching factors that dictate the emergence of low oxygen zones c) understand the effects of decreased oxygen availability on different habitats and communities, and d) propose mitigation strategies for the increasing impacts of hypoxia on benthic habitats. We aim to bring together ecologists and physiologists, physical oceanographers, fluid dynamic analysts, as well as all other scientists interested in aquatic oxygen dynamics at local scales to look into the complex interplay between microbes, nutrients and organic matter cycling in ODZs.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • ME - Marine Ecology and Biodiversity
  • MM - Microbiology and Molecular Ecology
  • OC - Ocean Change: Acidification and Hypoxia
  • PI - Physical-Biological Interactions
Index Terms:

4220 Coral reef systems [OCEANOGRAPHY: BIOLOGICAL]
4227 Diurnal, seasonal, and annual cycles [OCEANOGRAPHY: BIOLOGICAL]
4546 Nearshore processes [OCEANOGRAPHY: PHYSICAL]
4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: CHEMICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: CHEMICAL]
Primary Chair:  Annie Bourbonnais, University of South Carolina, School of the Earth, Ocean & Environment, Columbia, SC, United States
Co-chairs:  Andreas Haas, Royal Netherlands Institute for Sea Research, Marine Microbiology & Biogeochemistry, Den Burg, Netherlands, Mark A Altabet, Univ Massachusetts Darmouth, New Bedford, MA, United States and Brett Walker, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Primary Liaison:  Annie Bourbonnais, University of South Carolina, School of the Earth, Ocean & Environment, Columbia, SC, United States
Moderators:  Annie Bourbonnais, University of South Carolina, School of the Earth, Ocean & Environment, Columbia, SC, United States and Andreas Haas, Royal Netherlands Institute for Sea Research, Marine Microbiology & Biogeochemistry, Den Burg, Netherlands
Student Paper Review Liaisons:  Annie Bourbonnais, University of South Carolina, School of the Earth, Ocean & Environment, Columbia, SC, United States and Andreas Haas, Royal Netherlands Institute for Sea Research, Marine Microbiology & Biogeochemistry, Den Burg, Netherlands

Abstracts Submitted to this Session:

 
CONTINUOUS MONITORING OF DISSOLVED OXYGEN ACROSS THE WATER COLUMN AT THE BIOLUMINESCENT BAY, LA PARGUERA, LAJAS, PUERTO RICO (647780)
Rosamar Ayala-Torres, University of Puerto Rico Mayaguez, Marine Science Department, Mayaguez, PR, United States
 
Time Series of Oxygen Concentration, Methane Concentration and Methane Oxidation Rate Change of Deep Santa Barbara Basin Water Column (658081)
Qianhui Qin, University of California Santa Barbara, IGPMS, Santa Barbara, CA, United States, Frank Kinnaman, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States and Kelsey Gosselin, University of California Santa Barbara, Interdepartmental Graduate Program in Marine Science, Santa Barbara, United States
 
Active, novel and unexpected methanotrophs play a key role in methane oxidation in the Gulf of Mexico hypoxic zone (651206)
Katie Howe1, Kiley Seitz2, Lauren Gillies3, Brett J Baker4, J. Cameron Thrash5, Nancy N Rabalais6, Mary Katherine Rogener7, Samantha Benton Joye8 and Olivia Mason1, (1)Florida State University, Tallahassee, United States, (2)University of Texas at Austin, Austin, TX, United States, (3)Florida State University, Earth, Ocean and Atmosphere Department, Tallahassee, FL, United States, (4)University of Texas at Austin, United States, (5)University of Southern California, Biological Sciences, Los Angeles, CA, United States, (6)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (7)University of Georgia, Marine Sciences, Athens, GA, United States, (8)Univ Georgia, Department of Marine Sciences, Athens, GA, United States
 
Hypoxia in surface coastal waters at the entrance of the Gulf of California and its relation to coastal upwelling (644500)
Carlos Alberto Herrera Becerril, National Autonomous University of Mexico, Posgrado en Ciencias de la Tierra, Mexico City, DF, Mexico, Joan-Albert Sanchez-Cabeza, Universidad Nacional Autonoma de Mexico, Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología., Mexico City, SI, Mexico, Andrea Rebeca Lara Cera, National Autonomous University of Mexico, Facultad de Ciencias, México City, DF, Mexico, León Felipe Álvarez Sánchez, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, Unidad de Informática Marina, Mexico City, DF, Mexico, Maria Luisa Machain-Castillo, UNAM National Autonomous University of Mexico, Instituto de Ciencias del Mar y Limnología, Mexico City, DF, Mexico and Ana Carolina Ruiz-Fernández, Universidad Nacional Autonoma de Mexico, Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Mazatlán, SI, Mexico
 
Numerical simulation of Blue tide and high turbidity in the middle layer of the coastal low-oxygen area. (642214)
Teruhisa Okada, Central Research Institute of Electric Power Industry, Abiko, Japan and Masahiro Imamura, Central Research Institute of Electic Power Industry, Japan
 
Microbial Community Composition, Diversity, and Activity across Oxygen Gradients within the Eastern Tropical North Pacific Oxygen Minimum Zone (657091)
Sonia Vargas1, Irina Koester2, Margot Elizabeth White2, Lihini Aluwihare3 and Michael Beman4, (1)University of California, Merced, Quantitative and Systems Biology, Merced, CA, United States, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Scripps Institution of Oceanography, La Jolla, United States, (4)University of California, Merced, Environmental Systems, Merced, CA, United States
 
Mixotrophic Noctiluca scintillans will continue to dominate the Arabian Sea with rising hypoxia (634981)
Yue Wen1, William Kuster2, Helga R Gomes3 and Joaquim I Goes3, (1)Macalester College, Saint Paul, MN, United States, (2)Collegiate School, New York, NY, United States, (3)Lamont Doherty Earth Obs, Palisades, NY, United States
 
Water Column and Sediment Microbial Ecology of a West Florida Shelf Blue Hole (642147)
Zoe Dietrich, Bowdoin College, Earth and Oceanographic Science, Brunswick, ME, United States, Nastassia Patin, Georgia Institute of Technology Main Campus, School of Biological Sciences, Atlanta, GA, United States and Frank J Stewart, Georgia Institute of Technology, Atlanta, GA, United States
 
Use of Bivalve Shell Size Distribution as a Measure of Transient Anoxia in Heterogeneous Benthic Habitats Exposed to Persistent Currents (657879)
Russell Lee Cuhel, Carmen Aguilar and Lis Carufel, University of Wisconsin Milwaukee, Milwaukee, WI, United States
 
Tracking hypoxia in flounder: do two parapatric flounder species differ in hypoxia exposure? (654518)
Melvin Samson and Karin E. Limburg, SUNY College of Environmental Science and Forestry, Environmental and Forest Biology, Syracuse, NY, United States