AH44A:
Nutrient-Enhanced Coastal Acidification and Hypoxia and Other Anthropogenic Impacts on Biogeochemical Processes V Posters


Session ID#: 9379

Session Description:
Excessive nutrients often cause hypoxia through enhanced phytoplankton production of organic matter that is exported to the bottom and consumed by microbial respiration. The released CO2 during respiration further reduces the pH of already acidified water due to atmospheric CO2 in a way that is more than additive.  This is a concern due to the deleterious effects of low pH and O2 on marine life.  Yet, factors regulating coastal acidification are not fully understood due to the complexity of coastal systems.  One complication is caused by benthic respiration which reduces O2 and pH, but also generates alkalinity, which buffers against rapid changes in pH.  The oxidation of reduced species could also reduce pH near the oxic-anoxic boundary.  These and other biogeochemical processes, along with stratification and end-member mixing influence the occurrence and location of ecologically relevant combinations of low pH and O2. However, the uncertainties around these processes make the effectiveness of management efforts aimed at nutrient reductions to reduce coastal acidification difficult to predict.  This session invites presentations describing observations and models that further understanding of and improve our ability to predict how nutrients and other anthropogenic impacts contribute to coastal acidification and hypoxia and ecosystem changes.
Primary Chair:  John C Lehrter, US EPA, Gulf Breeze, FL, United States
Chairs:  Wei-Jun Cai, University of Delaware, School of Marine Science and Policy, Newark, DE, United States, Jason S Grear, US EPA, Narragansett, RI, United States, Cheryl Ann Brown, US EPA, Newport, OR, United States, Richard B Rivkin, Memorial University of Newfoundland, St John's, NL, Canada, M Robin Anderson, Fisheries and Oceans Canada, Tt. John's, NF, Canada, Louis Legendre, Université Pierre et Marie Curie, Paris, France and Nianzhi Jiao, Xiamen University, Institute of marine microbes and ecosphere, Xiamen, China
Moderators:  M Robin Anderson, Fisheries and Oceans Canada, Environmental Science Division, St. John's, NF, Canada, Jason Grear, US EPA, Narragansett, RI, United States, Wei-Jun Cai, University of Delaware, Newark, DE, United States and Nianzhi Jiao, Xiamen University, Institute of marine microbes and ecosphere, Xiamen, China
Student Paper Review Liaisons:  John Lehrter, US EPA, Gulf Breeze, FL, United States and Louis Legendre, Université Pierre et Marie Curie, Paris, France
Index Terms:

4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4834 Hypoxic environments [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • HI - Human Use and Impacts

Abstracts Submitted to this Session:

AH44A-0067
Understanding the Relative Influence of Anthropogenic Versus Natural Nitrogen on Biogeochemical Processes in the Southern California Bight (92998)
Karen McLaughlin1, Meredith D Howard2, Carly D.A. Beck3, Lorianne Emler3, Nikolay P Nezlin2 and Martha Sutula2, (1)SCCWRP, Costa Mesa, CA, United States, (2)Southern California Coastal Water Research Project, Costa Mesa, CA, United States, (3)SCCWRP
AH44A-0068
Modeling study of a hypoxia event off the Yangtze Estuary (88550)
Haibo Zong and Pingxing Ding, East China Normal University, Shanghai, China
AH43A-02
Sources of Nutrients to Nearshore Areas of a Eutrophic Estuary: Implications for Nutrient-Enhanced Acidification in Puget Sound  (89092)
Stephen R Pacella, US Environmental Protection Agency, NHEERL/ORD/WED/PCEB, Newport, OR, United States
AH44A-0071
Integrated Model of Ocean Acidification and Hypoxia to Support Ecosystem Prediction and Environmental Management in the California Current Ecosystem (93859)
Martha Sutula1, James C McWilliams2, Curtis A Deutsch3, Richard F Ambrose4, Simone R Alin5, Nina Bednarsek6, Daniele Bianchi2, Richard A Feely7, Faycal Kessouri1,2, Mark Gold4, Karen McLaughlin1, Liz Ohlsson3, Lionel Renault2 and Stephen Weisberg1, (1)SCCWRP, Costa Mesa, CA, United States, (2)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (3)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (4)University of California Los Angeles, Los Angeles, CA, United States, (5)NOAA, Seattle, WA, United States, (6)University of Washington, School of Marine and Environmental Affairs, Seattle, WA, United States, (7)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States
AH44A-0073
Estuarine Modeling: Does a higher grid resolution improve model performance? (90572)
James J Pauer1, Timothy J Feist2, Wilson Melendez3, Xiaomi Zhang2 and John C Lehrter4, (1)US Environmental Protection Agency, ORD/NHEERL/MED, Grosse Ile, MI, United States, (2)Trinity Engineering Associates, Inc., Grosse Ile, MI, United States, (3)Computer Sciences Corporation, Grosse Ile, MI, United States, (4)US Environmental Protection Agency, ORD/NHEERL/GED, Gulf Breeze, FL, United States
AH44A-0074
The Role of Ocean Acidification on Estuarine Phytoplankton Growth and Organic Contaminant Uptake (91420)
Taylor Rae Weakley1, Reagan Errera2, Sibel Bargu1, Amy Mallozzi1 and Myra Finkelstein3, (1)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (2)Louisiana State University, School of Renewable Natural Resources, Baton Rouge, LA, United States, (3)University of California Santa Cruz, Microbiology and Environmental Toxicology, Santa Cruz, CA, United States
AH44A-0076
Flushing Time Estimates for Estuarine Sub-Regions using Numerical Circulation and Box Models (91593)
David S Ullman, University of Rhode Island, Narragansett, RI, United States
AH44A-0077
Contributions to Hypoxia Development in Mississippi Bight Waters as Revealed by Tracer Distributions During a 4-year Time Series (87373)
Peng Ho and Alan M Shiller, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States
AH44A-0078
Nutrient - Salinity Ratios as Tracers for Mixing in the Gulf of Mexico (GOM) (87565)
Jongsun Kim, Texas A&M University, Oceanography, College Station, TX, United States, Piers Chapman, Texas A&M University College Station, Oceanography, College Station, TX, United States and Steven Francis DiMarco, Texas A&M University, College Station, TX, United States
AH44A-0079
Physical and Biogeochemical Characteristics of Hypoxia in the Jinhae Bay, South Korea (89417)
Jae-Hyun Lim1, Tae-Jun Choi1, Jung-No Kwon1, Young-Sug Kim1, JeongHee Shim1, Il-Nam Kim2 and Sang Lee3, (1)National Institute of Fisheries Science, Marine Environment Research Division, Busan, Korea, Republic of (South), (2)Incheon National University, Department of Marine Science, Korea, Republic of (South), (3)Pusan National University, Busan, Korea, Republic of (South)
AH44A-0080
Potential changes over a warmer climate in the Benguela Upwelling System within an Oxygen Minimum Zone (93923)
Isabelle Dadou, LEGOS/UMR 5566, TOULOUSE, France, Eric Machu, IRD Institute for Research and Development, Plouzané, France, Briac Le Vu, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, Katerina Goubanova, CERFACS, Toulouse, France and Veronique Garcon, CNRS-LEGOS, Toulouse, France
AH44A-0081
Mechanisms Controlling Hypoxia Data Atlas: High-resolution hydrographic and chemical observations from 2003-2014 (90058)
Heather Zimmerle, Texas A&M University, Department of Oceanography, College Station, TX, United States and Steven Francis DiMarco, Texas A & M University, College Station, TX, United States
AH44A-0082
High pCO2 conditions in San Francisco Bay originate from coastal upwelling from the California Undercurrent (90738)
Megan M Rutkowski, University of Pennsylvania, Department of Earth and Environmental Science, Philadelphia, PA, United States, James W Murray, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, Mary K Miller, Exploratorium, San Francisco, CA, United States, Adrienne J Sutton, University of Washington, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States and Christopher L Sabine, NOAA Seattle, Seattle, WA, United States
AH44A-0083
Spatial and Temporal Distributions of Carbonate Saturation State on the Mississippi River Dominated Northern Gulf of Mexico (91476)
Wei-Jen Huang, National Sun Yat-sen University, Department of Oceanography, Kaohsiung, Taiwan, Wei-Jun Cai, University of Delaware, School of Marine Science and Policy, Newark, DE, United States, Yongchen Wang, University of Georgia, Marine Science, Athens, GA, United States and Xinping Hu, Texas A&M University - Corpus Christi, Physical and Environmental Sciences, Corpus Christi, TX, United States
AH44A-0084
Air-water CO2 Fluxes In Seasonal Hypoxia-influenced Green Bay, Lake Michigan (92422)
Peng Lin, University of Wisconsin-Milwaukee, School of Freshwater Sciences, Milwaukee, WI, United States, Jeffrey Val Klump, Univ Wisconsin Milwaukee, Milwaukee, WI, United States and Laodong Guo, University of Wisconsin Milwaukee, Milwaukee, WI, United States
AH44A-0085
The Effect of Elevated CO2 and Temperature on the Hatch Rate and Survival of Estuarine Forage Fish  (93423)
Lucas Redford Merlo and Christopher Gobler, Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States
AH44A-0086
Anthropogenic and climatic controls on carbon and nitrogen exports from Mississippi river basin to Gulf of Mexico during 1800 – 2100: Implications for hypoxia and ocean acidification (93513)
Hanqin Tian1, Jia Yang1, Bowen Zhang1, Shufen Pan1, Steven E Lohrenz2, Wei-Jun Cai3, Ruoying He4, Z. George Xue5, Chaoqun Lu6, Wei Ren7, Wei-Jen Huang8 and Yuanzhi Yao1, (1)Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, AL, United States, (2)University of Massachusetts Dartmouth, New Bedford, MA, United States, (3)University of Delaware, School of Marine Science and Policy, Newark, DE, United States, (4)North Carolina State Univ., Raleigh, NC, United States, (5)Louisiana State University, Baton Rouge, LA, United States, (6)Iowa Sate University, Ames, IA, United States, (7)University of Kentucky, Lexington, KY, United States, (8)University of Delaware, Newark, DE, United States
See more of: Ocean Change: Acidification and Hypoxia