AH34A:
Nutrient-Enhanced Coastal Acidification and Hypoxia and Other Anthropogenic Impacts on Biogeochemical Processes II Posters


Session ID#: 11541

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:  John C Lehrter, US EPA, Gulf Breeze, FL, United States, Richard B Rivkin, Memorial University of Newfoundland, St John's, NL, Canada, Louis Legendre, Université Pierre et Marie Curie, Paris, France and Jason Grear, US EPA, Narragansett, RI, United States
Student Paper Review Liaisons:  Cheryl Ann Brown, US EPA, Newport, OR, United States and Nianzhi Jiao, Xiamen University, National Key Laboratory, Xiamen, China
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):
  • EC - Estuarine and Coastal
  • HI - Human Use and Impacts

Abstracts Submitted to this Session:

 
AH34A-0051
The Anthropogenic Effects of Hydrocarbon Inputs to Coastal Seas: Are There Potential Biogeochemical Impacts? (87977)
M Robin Anderson, Fisheries and Oceans Canada, Environmental Science Division, St. John's, NF, Canada and Richard B Rivkin, Memorial University of Newfoundland, St John's, NL, Canada
 
AH34A-0052
Impact of shortwave radiation biases on ocean conditions in the Pacific Northwest waters: Results from the seasonal forecast system J-SCOPE. (88063)
Thanh-Tam Nguyen, Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, United States, Samantha A Siedlecki, Univ of Washington-JISAO, Seattle, WA, United States, Albert J Hermann, University of Washington, Joint Institute for the Study of the Atmosphere and Oceans, Seattle, WA, United States, Nicholas A Bond, University of Washington Seattle Campus, Seattle, WA, United States, Thomas P Ackerman, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States and Laura M Hinkelman, Univ of WA-JISAO, Seattle, WA, United States
 
AH34A-0053
The Comparison of Different Heterotrophic Bacteria on the Decomposition of DOC molecule (93699)
Rui Xie1, Qiang Zheng1 and Nianzhi Jiao2, (1)State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, China, (2)Xiamen University, Institute of marine microbes and ecosphere, Xiamen, China
 
AH34A-0054
Paticulate Organic Carbon and Its Role in Nutrient Biogeochemical Cycles under Anthtropogenic Activity Effects in The East China Sea (93794)
Haiyan Jin1,2, Shichao Tian1, Zhongqiang Ji1, Shengquan Gao1, Yanpei Zhuang1, Yang Zhang1 and Jianfang Chen3, (1)Second institute of Oceanography, SOA, Key Laboratory of Marine Ecosystem and Biogeochemistry, Hangzhou, China, (2)State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography, SOA, Hangzhou, China, (3)Second institute of Oceanography, SOA, Key Laboratory of Marine Ecosystem and Biogeochemistry of SOA, Hangzhou, China
 
AH34A-0056
Seasonal Variations of Atmospheric Black Carbon Concentrations and Implications for Nutrient Inputs and Organic Carbon Partitioning in the Marine Coastal Ecosystem of Halong Bay, North Vietnam (93644)
CHU Van Thuoc, Institute of Marine Environment and Resources, Vietnam Academy of Science and Technology, Dept. of Marine Plankton and Microorganism, Hai Phong, Vietnam, Xavier Mari, Institute of Research for Development, Mediterranean Institute of Oceanography (MIO), Marseille, France, Benjamin P Guinot, CNRS, Paris Cedex 16, France, Justine Brune, Institute of Research for Development, Laboratoire Ecologie des Systèmes Marins Côtiers (ECOSYM), Montpellier, France, Jean-Pierre Lefebvre, Institte of Research for Development, Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Toulouse, France, Patrick Raimbault, Mediterranean Institute of Oceanography, Marseille Cedex 09, France, Jutta Niggemann, University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany and Thorsten Dittmar, Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
 
AH34A-0057
DOC Molecule Transporter and Transformation in Marine Microbes (89350)
Qiang Zheng, State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, China and Nianzhi Jiao, Xiamen University, Institute of marine microbes and ecosphere, Xiamen, China
 
AH34A-0059
Impact of Wet Deposition of Black Carbon on Particle Dynamics in Surface Waters of Halong Bay, North Vietnam (90943)
Xavier Mari, Institute of Research for Development, Mediterranean Institute of Oceanography (MIO), Marseille, France, Benjamin P Guinot, CNRS, Paris Cedex 16, France, CHU Van Thuoc, Institute of Marine Environment and Resources, Haiphong, Vietnam, Justine Brune, Institute of Research for Development, Laboratoire Ecologie des Systèmes Marins Côtiers (ECOSYM), Montpellier, France, Jean-Pierre Lefebvre, Institte of Research for Development, Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Toulouse, France, Patrick Raimbault, Mediterranean Institute of Oceanography, Marseille Cedex 09, France, Jutta Niggemann, University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany and Thorsten Dittmar, Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
 
AH34A-0061
Impacts of shrimp farming cultivation cycles on benthic assemblages and chemistry of sediments (91625)
Vanessa Hatje1, Luisa Ribeiro1 and Francisco Barros2, (1)Universidade Federal da Bahia, Química Analítica - CIENAM, Salvador, Brazil, (2)Universidade Federal da Bahia, Zoologia, Salvador, Brazil
 
AH34A-0062
Magnitude of the Suess Effect in North Atlantic - a Study of Foraminifera and Transient Tracer Simulations (92455)
Yuxin Zhou, University of Southern California, Earth Sciences, Los Angeles, CA, United States, Delia Oppo, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Geoffrey Gebbie, Woods Hole Oceanographic Inst., Woods Hole, MA, United States and David J Thornalley, University College London, London, United Kingdom
 
AH34A-0063
Impacts of the Nutrient Inputs from Riverine on the Dynamic and Community Structure of Fungal-like Protists in the Coastal Ocean Ecosystems (87432)
Guangyi Wang, Yingbo Duan and Ningdong Xie, Tianjin University, School of Environmental Science and Engineering, Tianjin, China
 
AH34A-0064
The Role of Cable Bacteria on Porewater Acidity in an Organic Rich Coastal Sediment (93732)
Sairah Malkin1, Alexandra M F Rao2, Dorina Seitaj3, Laurine DW Burdorf3, Silvia Hidalgo-Martinez3, Anton Tramper3 and Filip J R Meysman3, (1)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States, (2)ISMER UQAR, Rimouski, QC, Canada, (3)Royal Netherlands Institute for Sea Research (NIOZ), Dept of Ecosystem Studies, Yerseke, Netherlands
 
AH34A-0065
Spatial patterns in water column respiration rates in the northern Gulf of Mexico hypoxic zone: results from four years of July shelfwide cruises (92700)
Brian J Roberts1, Ariella Chelsky1, Matthew W Rich1,2, Mary Katherine Rogener3, Samantha Benton Joye4 and Nancy N Rabalais1, (1)Louisiana Universities Marine Consortium, Chauvin, LA, United States, (2)University of Arkansas, Department of Crop, Soil and Environmental Science, Fayetteville, AZ, United States, (3)University of Georgia, Marine Sciences, Athens, GA, United States, (4)University of Georgia, Athens, GA, United States
See more of: Ocean Change: Acidification and Hypoxia