Douglas Wallace

Professor

Scientific Director, Halifax Marine Research Institute (HMRI) (2011 - current)

Email: douglas.wallace@dal.ca

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Recent Submissions

  • Nitrous oxide in the North Atlantic Ocean 

    Walter, S., H. W. Bange, U. Breitenbach, and D. W. R. Wallace. 2006. "Nitrous oxide in the North Atlantic Ocean." Biogeosciences 3(4): 607-619.
    In order to get a comprehensive picture of the distribution of nitrous oxide (N(2)O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and ...
  • Distribution of N2O in the Baltic Sea during transition from anoxic to oxic conditions 

    Walter, S., U. Breitenbach, H. W. Bange, G. Nausch, et al. 2006. "Distribution of N2O in the Baltic Sea during transition from anoxic to oxic conditions." Biogeosciences 3(4): 557-570.
    In January 2003, a major inflow of cold and oxygen-rich North Sea Water terminated an ongoing stagnation period in parts of the central Baltic Sea. In order to investigate the role of North Sea Water inflow in the production ...
  • Estimating the monthly pCO(2) distribution in the North Atlantic using a self-organizing neural network 

    Telszewski, M., A. Chazottes, U. Schuster, A. J. Watson, et al. 2009. "Estimating the monthly pCO(2) distribution in the North Atlantic using a self-organizing neural network." Biogeosciences 6(8): 1405-1421.
    Here we present monthly, basin-wide maps of the partial pressure of carbon dioxide (pCO(2)) for the North Atlantic on a 1 degrees latitude by 1 degrees longitude grid for years 2004 through 2006 inclusive. The maps have ...
  • Carbon cycle research after Kyoto 

    Tans, PP, and DWR Wallace. 1999. "Carbon cycle research after Kyoto." Tellus Series B-Chemical and Physical Meteorology 51(2): 562-571.
    Recent progress in research of the global carbon cycle is reviewed and research needs for the immediate future are discussed, in light of the challenge posed to society to come to grips with the problem of man-made climate ...
  • Contrasting biogeochemistry of nitrogen in the Atlantic and Pacific Oxygen Minimum Zones 

    Ryabenko, E., A. Kock, H. W. Bange, M. A. Altabet, et al. 2012. "Contrasting biogeochemistry of nitrogen in the Atlantic and Pacific Oxygen Minimum Zones." Biogeosciences 9(1): 203-215.
    We present new data for the stable isotope ratio of inorganic nitrogen species from the contrasting oxygen minimum zones (OMZs) of the Eastern Tropical North Atlantic, south of Cape Verde, and the Eastern Tropical South ...
  • Estimating mixed layer nitrate in the North Atlantic Ocean 

    Steinhoff, T., T. Friedrich, S. E. Hartman, A. Oschlies, et al. 2010. "Estimating mixed layer nitrate in the North Atlantic Ocean." Biogeosciences 7(3): 795-807.
    Here we present an equation for the estimation of nitrate in surface waters of the North Atlantic Ocean (40 degrees N to 52 degrees N, 10 degrees W to 60 degrees W). The equation was derived by multiple linear regression ...
  • Methodological Underestimation of Oceanic Nitrogen Fixation Rates 

    Mohr, Wiebke, Tobias Grosskopf, Douglas W. R. Wallace, and Julie LaRoche. 2010. "Methodological Underestimation of Oceanic Nitrogen Fixation Rates." Plos One 5(9): 12583-e12583.
    The two commonly applied methods to assess dinitrogen (N(2)) fixation rates are the (15)N(2)-tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two methods as well as inconsistencies between ...