Grantee Research Project Results
2002 Progress Report: Physical and Biological Processes Affecting the Distribution of Hypoxia on the Louisiana Continental Shelf
EPA Grant Number: R827785E02Title: Physical and Biological Processes Affecting the Distribution of Hypoxia on the Louisiana Continental Shelf
Investigators: Rabalais, Nancy N. , Turner, R. Eugene , Wiseman, William J. , Justic, Dubravko
Institution: Louisiana State University - Baton Rouge
EPA Project Officer: Chung, Serena
Project Period: March 17, 2002 through March 16, 2003
Project Period Covered by this Report: March 17, 2002 through March 16, 2003
RFA: EPSCoR (Experimental Program to Stimulate Competitive Research) (1999) RFA Text | Recipients Lists
Research Category: EPSCoR (The Experimental Program to Stimulate Competitive Research)
Objective:
The main objective of this research project is to better define the physical and biological processes affecting the distribution of low oxygen through experiments with instrumentation, empirical relationships, and modeling. Development of technological capabilities and expanded modeling efforts will provide the necessary data sets to improve our research competitiveness, as well as support the development of human resources, particularly in public and graduate education. The project will address research questions about vertical and horizontal transport of oxygen, timing and duration of low oxygen, cross-shelf and alongshore dynamics, transformation of hypoxic water masses, and integration of the physics (winds and currents) with biological processes.
Progress Summary:
We continued the deployment of a standard instrument mooring with near-surface, middle, and bottom continuously recording oxygen meters, and added a bottom-mounted Acoustic Doppler Current Profiler (ADCP). Two short-term experiments were conducted with a nitrate meter, silicate meter, and light meter. We continue working with the Louisiana State University wave-current-surge information system (WAVCIS) group to develop real-time data capabilities. Data quality control and management was performed on multiple years of data to prepare them for data manipulations and analyses. Supplemental funding was procured.
Future Activities:
We will complete the real-time data component of our system. We also will prepare, present, and publish the final data syntheses and analyses.
Journal Articles on this Report : 7 Displayed | Download in RIS Format
| Other project views: | All 44 publications | 18 publications in selected types | All 17 journal articles |
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Childs CR, Rabalais NN, Turner RE, Proctor LM. Sediment denitrification in the Gulf of Mexico zone of hypoxia. Marine Ecology Progress Series 2002;240:285-290. |
R827785E02 (2002) |
not available |
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Rabalais NN, Turner RE, Wiseman Jr. WJ. Hypoxia in the Gulf of Mexico, a.k.a. the dead zone. Annual Review of Ecology and Systematics 2002;33(1):235-263. |
R827785E02 (2002) |
not available |
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Rabalais NN. Nitrogen in aquatic ecosystems. Ambio 2002;31(2):102-112. |
R827785E02 (2002) |
not available |
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Rabalais NN, Turner RE, Dortch Q, Justic D, Bierman Jr. VJ, Wiseman Jr. WJ. Nutrient-enhanced productivity in the northern Gulf of Mexico: past, present and future. Hydrobiologia 2002;475/476:39-63. |
R827785E02 (2002) R827785E02 (Final) |
Exit |
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Rabalais NN, Nixon SW. Preface: nutrient over-enrichment of the coastal zone. Estuaries 2002; 25(4B): 639. |
R827785E02 (2002) |
not available |
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Scavia D, Rabalais NN, Turner RE, Justic D, Wiseman WJ. Predicting the response of Gulf of Mexico hypoxia to variations in Mississippi River nitrogen load. Limnology and Oceanography 2003;48(3):951-956. |
R827785E02 (2002) R827785E02 (Final) |
Exit Exit |
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Turner RE, Rabalais NN, Justic D, Dortch Q. Global patterns of dissolved N, P and Si in large rivers. Biogeochemistry 2003;64(3):297-317. |
R827785E02 (2002) R827785E02 (Final) |
Exit |
Supplemental Keywords:
hypoxia, anoxia, continental shelf, Gulf of Mexico, Mississippi River, eutrophication, nonpoint source pollution, coupled physical/biological models, climate variability., RFA, Ecosystem Protection/Environmental Exposure & Risk, Scientific Discipline, INTERNATIONAL COOPERATION, Water, Waste, ECOSYSTEMS, Aquatic Ecosystem, Restoration, Aquatic Ecosystems & Estuarine Research, Fate & Transport, Terrestrial Ecosystems, Aquatic Ecosystem Restoration, Watersheds, Monitoring/Modeling, Biochemistry, climate change, Water & Watershed, Ecology and Ecosystems, watershed management, heavy metals, ecological impact, restoration strategies, water quality, watershed restoration, coastal ecosystems, environmental monitoring, hypoxia, watershed influences, hydrology, environmental measurement, Mississippi, water monitoring, fate and transport, ecosystem stress, environmental stress, sediment transport, coastal zone, integrated watershed model, water circulation, ecology assessment models, ecological research, aquatic ecosystems, continuous monitoring, source load modeling, watershed sustainablilityRelevant Websites:
http://www.nos.noaa.gov/Products/pubs_hypox.html Exit
http://csc.noaa.gov/products/gulfmex/html/rabalais.htm Exit
Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.