OB42B:
Linking the Biology, Geochemistry, and Circulation of the Gulf of Mexico II

Session ID#: 93145

Session Description:
The Gulf of Mexico is a small, dynamic marginal sea that supports a broad range of oceanographic environments, including eutrophic coastal systems, oligotrophic open ocean waters, hydrocarbon-impacted waters and sediments, and shelf waters that are susceptible to frequent harmful algal blooms. Large atmospheric, riverine, and submarine groundwater fluxes strongly influence the biogeochemistry of near-shore and open ocean waters, yielding a high degree of spatial and temporal variability. Several recent studies have focused on characterizing the biogeochemistry of the Gulf of Mexico using a range of interdisciplinary approaches. Following on a successful 2018 OSM Town Hall led by GEOTRACES and OCB, this session will bring together interested investigators to highlight new results from the Gulf and identify potential areas of common interest and collaborative opportunities to help inform future planning in GEOTRACES, OCB, and other relevant programs. We invite contributions that characterize the variability in the biology, geochemistry, and/or physical oceanography of the Gulf of Mexico, and especially the linkages between them. Suggested contributions may include, but are not limited to descriptions of water column and benthic geochemical distributions, biogeochemical rate measurements, characterizations of molecular ecology, geochemical fluxes, and descriptions of circulation that impact Gulf biogeochemical dynamics.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • CP - Coastal and Estuarine Processes
  • MM - Microbiology and Molecular Ecology
Index Terms:
Primary Chair:  Angela N Knapp, Florida State University, Tallahassee, FL, United States
Co-chairs:  Alan M Shiller, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States, Heather M Benway, Woods Hole Oceanographic Inst., Woods Hole, MA, United States and Juan Carlos Herguera, Center for Scientific Research and Higher Education at Ensenada, Ensenada, Mexico
Primary Liaison:  Angela N Knapp, Florida State University, Tallahassee, FL, United States
Moderators:  Alan M Shiller, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States and Juan Carlos Herguera, Center for Scientific Research and Higher Education at Ensenada, Ensenada, Mexico
Student Paper Review Liaison:  Heather M Benway, Woods Hole Oceanographic Inst., Woods Hole, MA, United States

Abstracts Submitted to this Session:

Physical and Biogeochemical Controls of Dissolved Oxygen Concentration Patterns in the Gulf of Mexico Deep Waters (656788)
Juan Carlos Herguera, Centro de Investigación Científica y de Educación Superior de Ensenada, Oceanology, San Diego, CA, United States, Gerardo Quintanilla, Center for Scientific Research and Higher Education at Ensenada, Ensenada, BJ, Mexico, Yéssica Vanessa Contreras Pacheco, Center for Scientific Research and Higher Education at Ensenada, Ensenada, Mexico and Vicente Ferreira-Bartrina, CICESE National Center for Scientific Research and Higher Education of Mexico, Ensenada, Mexico
Local boundaries of bottom hypoxia (655071)
Veronica Ruiz Xomchuk, Texas A&M University College Station, College Station, TX, United States and Robert D Hetland, Texas A&M University, College Station, TX, United States
Inorganic Nutrients in the Deep Water Region of the Gulf of Mexico: What Have we Learnt from a Baseline Study of the CIGoM Project. (656466)
Victor F Camacho-Ibar1, Augusto Valencia2, Cristian Hakspiel3, Jorge Velasquez4, María del Carmen Ávila López5, Mauricio Muñoz-Anderson1 and Erika Lee4, (1)Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas, Ensenada, BJ, Mexico, (2)Autonomous University of Baja California, Instituto de Investigaciones Oceanologicas, Ensenada, BJ, Mexico, (3)Autonomous University of Baja California, Instituto de Investigaciones Oceanologicas, Enesenada, BJ, Mexico, (4)Universidad Autónoma de Baja California, Facultad de Ciencias Marinas, Ensenada, BJ, Mexico, (5)Autonomous University of Baja California, Instituto de Investigaciones Oceanologicas, Ensenada, Mexico
Biogeochemical Impacts of Altered Freshwater Flow to the Mississippi Sound (657199)
Kevin Dillon, University of Southern Mississippi, Coastal Sciences, Ocean Springs, MS, United States, Scott P Milroy, The University of Southern Mississippi, Division of Marine Science, Stennis Space Center, MS, United States and Alan M Shiller, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States
Multi-Element Dissolved Trace Metal Distributions in Surface Waters of the Texas-Louisiana Shelf: A Synthesis From Three Cruises 2017-2019 Showing the Influence of Rivers, Hurricanes, Sediments, and Biology (654709)
Hannah Adams1, Laramie Jensen1, Brett Farran1,2, Nathan Timothy Lanning3 and Jessica N Fitzsimmons4, (1)Texas A&M University College Station, Oceanography, College Station, TX, United States, (2)Florida State University, Tallahassee, FL, United States, (3)Texas A&M University College Station, College Station, TX, United States, (4)Texas A&M University, Oceanography, College Station, TX, United States
Quantifying African dust deposition to the Gulf of Mexico (636535)
Christopher T Hayes, University of Southern Mississippi, School of Ocean Science and Engineering, Stennis Space Center, United States
Correlated dissolved organic nitrogen and dissolved iron concentrations on the West Florida Shelf: signatures of submarine groundwater discharge and Trichodesmium thiebautii (651976)
Dreux Chappell1, Kristen N Buck2, Corday Selden3, Salvatore Caprara4, Brent A Summers5, Travis Mellett4, Kristina Confesor6, Kimberly Powell7, Laura Donahue8, Rene Boiteau9, Tim M Conway10, Matthew A Charette11, Joseph Tamborski12, Amy M McKenna13 and Angela N Knapp14, (1)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (2)University of South Florida, College of Marine Science, Saint Petersburg, FL, United States, (3)Cuernavaca, Mexico, (4)University of South Florida, College of Marine Science, St Petersburg, FL, United States, (5)University of South Florida, College of Marine Science, St Petersburg, United States, (6)Heidelberg University, Tiffin, OH, United States, (7)Old Dominion University, Ocean, Earth & Atmospheric Sciences, Norfolk, VA, United States, (8)Haverford College, Haverford, United States, (9)Pacific Northwest National Laboratory, Richland, WA, United States, (10)University of South Florida, College of Marine Science, St. Petersburg, United States, (11)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (12)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States, (13)Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL, United States, (14)Florida State University, Tallahassee, FL, United States
The biogeochemical cycling of Fe and Fe isotopes in the Gulf of Mexico and the Gulf Stream system (643766)
Tim M Conway1, Brent A Summers2, Salvatore Caprara3, Travis Mellett4, Ryan Schlaiss3, Kristen N Buck5, Dreux Chappell6 and Angela N Knapp7, (1)University of South Florida, St. Petersburg, FL, United States, (2)University of South Florida, College of Marine Science, St Petersburg, United States, (3)University of South Florida, College of Marine Science, St Petersburg, FL, United States, (4)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (5)University of South Florida, College of Marine Science, Saint Petersburg, FL, United States, (6)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (7)Florida State University, Tallahassee, FL, United States