Noninvasive Monitoring at the Benthic Interface: The Aquatic Eddy Covariance Technique

Session ID#: 7899

Session Description:
Oxygen exchange over the interface between benthic ecosystems and the overlying water is one of the most frequently measured variables in aquatic sciences. The exchange is used as a proxy for primary production and organic carbon mineralization, and is an invaluable parameter for understanding the biogeochemical functioning of marine and freshwater systems. Aquatic eddy covariance is a relatively new technique for measuring oxygen fluxes at this interface, and it has great potential for advancing our understanding of benthic ecosystem metabolism as the only approach that can measure benthic fluxes without affecting their drivers. This talk first gives a brief overview of the basic eddy covariance principles and the instruments used. Then, the rapidly growing body of aquatic eddy covariance literature and the most important findings are reviewed and discussed. Selected examples of ongoing studies at the benthic interface are presented with focus on systems where traditional flux methods are difficult to apply, and on the novel ecological insights gained from using the eddy covariance technique. Finally, a look into the future points to new applications of the technique and other types of eddy covariance sensors applicable for quantifying exchange rates of oxygen and other constituents at the benthic interfaces.
Moderator:  Steven G Ackleson, S A Ocean Services, Falls Church, VA, United States
Primary Presenter:  Peter Berg, University of Virginia, Charlottesville, VA, United States
Presenters:  Markus H Huettel, Florida St Univ, Tallahassee, FL, United States, Clare E Reimers, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and Ronnie N Glud, University of Southern Denmark, Nordic Center of Earth Evolution, Department of Biology, Odense, Denmark
Index Terms:

4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
  • B - Biogeochemistry and Nutrients
  • EC - Estuarine and Coastal
  • IS - Instrumentation & Sensing Technologies
  • ME - Marine Ecosystems