John Cullen

Professor

Fellow of the Royal Society of Canada
Fellow of the Oceanography Society

Email: john.cullen@dal.ca

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Recent Submissions

  • The relationship between near-surface chlorophyll and solar-stimulated fluorescence: Biological effects 

    Cullen, JJ, AM Ciotti, RF Davis, and PJ Neale. 1997. "The relationship between near-surface chlorophyll and solar-stimulated fluorescence: Biological effects." PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) 2963: 277.
    The fluorescence of chlorophyll a (Chi) near 683 nm can be detected in water leaving radiance and related quantitatively to the concentration of Chi. Solar-induced fluorescence has also been related to photosynthesis in ...
  • Commercial Ocean Fertilization: We Know Enough to Know Better 

    Cullen, J. J., and S. W. Chisholm. 2000. "Commercial Ocean Fertilization: We Know Enough to Know Better." 2000 Ocean Sciences Meeting, San Antonio, TX (USA), 24-28 Jan 2000.
    Nearly a decade ago members of ASLO formally urged "all governments to regard the role of iron in marine productivity as an area for further research and not to consider [large scale] iron fertilization as a policy option ...
  • Ocean Observing Systems and the Interaction of Technology, Information and Understanding 

    Cullen, J. J.. 2006. "Ocean Observing Systems and the Interaction of Technology, Information and Understanding." EOS, Transactions, American Geophysical Union.
    Supported by interdisciplinary research and technical innovation, automated observations are now used routinely to describe the temporal and spatial variability of physically, ecologically and biogeochemically important ...
  • The Lunenburg Bay Project 

    Cullen, J., and H. Ritchie. 2007. "The Lunenburg Bay Project." CMOS Congress 2007 - Air, Ocean, Earth and Ice on the Rock, St. Johns, Newfoundland and Labrador, May 28 - June 1, 2007.
    A major research project entitled "Interdisciplinary Marine Environmental Prediction in the Atlantic Coastal Region" has been in progress for several years, funded by the Canadian Foundation for Climate and Atmospheric ...
  • LIFE CYCLE OF AN OCEAN OBSERVATORY: THE LUNENBURG BAY PROJECT 

    Cullen, J. J., and H. Ritchie. 2008. "LIFE CYCLE OF AN OCEAN OBSERVATORY: THE LUNENBURG BAY PROJECT." 2008 Ocean Sciences Meeting, Orlando, Florida (USA), 2-7 Mar 2008.
    Over the past six years, researchers from Dalhousie University, in collaboration with Environment Canada, Fisheries and Oceans Canada and local industry, have developed what we believe to be Canada's first real-time ...
  • Fertilization of the ocean for climate mitigation 

    Cullen, J.. "Fertilization of the ocean for climate mitigation." CMOS Congress 2009 - Sea and Sky Come to Life, Halifax, Nova Scotia (Canada), 31 May - 4 June 2009.
    Ocean iron fertilization (OIF) is being considered as a strategy for mitigating rising atmospheric carbon dioxide concentrations. One model for implementation is the sale of carbon offsets. The debate over fertilization ...
  • Comparison Between Conventional Sampling and Automated Ocean Monitoring in Coastal Embayments of Nova Scotia 

    Kirchhoff, SY, C. M. Ryan, C. Normandeau, R. F. Davis, et al. 2006. "Comparison Between Conventional Sampling and Automated Ocean Monitoring in Coastal Embayments of Nova Scotia." EOS, Transactions, American Geophysical Union 87(36).
    Coastal marine environments are highly dynamic and variable, so important aspects of ecosystem variability cannot be described with conventional sampling from boats. With the advent of new sensors and improved communications, ...
  • Development of the Lunenburg Bay Coastal Observatory: a practical guide to operational oceanography 

    Kirchhoff, SY, , and J. J. Cullen. "Development of the Lunenburg Bay Coastal Observatory: a practical guide to operational oceanography." CMOS Congress 2007 - Air, Ocean, Earth and Ice on the Rock, St. Johns, Newfoundland and Labrador, May 28 - June 1, 2007.
    Since June 2002, a coastal observation and prediction system has been operated in Lunenburg Bay, Nova Scotia. The Marine Environmental Prediction System (MEPS-Bay) observatory uses a network of instruments to measure ...
  • The influence of phytoplankton size structure on the spectral attenuation coefficient in the upper ocean 

    Ciotti, AM, JJ Cullen, CS Roesler, and MR Lewis. 1997. "The influence of phytoplankton size structure on the spectral attenuation coefficient in the upper ocean." PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) 2963: 385.
    The influence of the variability in the structure of phytoplankton communities on measurable optical properties of the upper ocean is analyzed for a wide variety of coastal marine environments. Changes in spectral attenuation ...
  • A Study of Gas Hydrates With Ocean-Bottom-Seismometer Data on the East Coast of Canada 

    Schlesinger, A., D. Mosher, J. Cullen, K. Louden, et al. "A Study of Gas Hydrates With Ocean-Bottom-Seismometer Data on the East Coast of Canada." Proceedings of the 2009 American Geophysical Union Joint Assemby, Toronto, Ontario (Canada), 24-27 May 2009.
    A number of BSR locations have been identified along the Scotian Slope from geophysical evidence, but as yet none have been confirmed to contain gas hydrate through direct sampling. Studies near the Mohican Channel (200 ...
  • Estimates of Phytoplankton Biomass in Case 2 Waters Suitable for Autonomous Observation Systems 

    Craig, SE, Y. Huot, C. Jones, M. Dowd, et al. 2006. "Estimates of Phytoplankton Biomass in Case 2 Waters Suitable for Autonomous Observation Systems." EOS, Transactions, American Geophysical Union.
    Real-time ocean observatories have been deployed in two locations on the southeastern coast of Nova Scotia, Canada. Both systems are equipped to measure hyperspectral surface reflectance and downwelling irradiance at ...
  • Can seasonal and spatial variation of methyl iodide in the NW Atlantic reveal some clues to its oceanic production? 

    Wang, L., R. M. Moore, J. Cullen, and K. Thompson. "Can seasonal and spatial variation of methyl iodide in the NW Atlantic reveal some clues to its oceanic production?." 40th CMOS Congress 2006 - Weather, Oceans and Climate, Exploring the Connections, Toronto, Ontario (Canada), May 29 - June 1, 2006.
    The ocean is a significant source of atmospheric methyl iodide (CH sub(3)I), but the main oceanic sources of CH sub(3)I are not yet understood. The seasonal investigation of Canadian Surface Ocean Lower Atmosphere Study ...
  • The Color of Lakes, Attenuation of UV Radiation, and the Potential for Biological Damage 

    Lehmann, M. K., R. F. Davis, Y. Huot, and J. J. Cullen. 2000. "The Color of Lakes, Attenuation of UV Radiation, and the Potential for Biological Damage." 2000 Ocean Sciences Meeting, San Antonio, TX (USA), 24-28 Jan 2000.
    Surface waters are exposed to ultraviolet radiation (UVR) that can have detrimental effects on the physiology and the genome of aquatic organisms. Ultraviolet wavelengths are strongly absorbed by colored dissolved organic ...
  • Stochastic methods to quantify the effect of environmental variability on plankton ecosystems 

    Lehmann, M., and J. J. Cullen. "Stochastic methods to quantify the effect of environmental variability on plankton ecosystems." 39th CMOS Congress 2005 - Sea to Sky, Vancouver, British Columbia (Canada), May 31 - June 3, 2005.
    The marine physical environment is often dominated by seasonal, annual or longer cycles of variability. Higher frequency events caused by local weather and mesoscale hydrodynamic processes also exist and invoke biological ...
  • Modelling the biological effects of a summer upwelling events in Lunenburg Bay, Canada 

    Laurent, A., A. F. Vezina, K. Fennel, and J. J. Cullen. "Modelling the biological effects of a summer upwelling events in Lunenburg Bay, Canada." CMOS Congress 2009 - Sea and Sky Come to Life, Halifax, Nova Scotia (Canada), 31 May - 4 June 2009.
    Along the Atlantic coast of Nova Scotia (Canada), episodic summer upwelling events, induced by the prevailing southwesterly winds, are a significant source of physical and biological variability on the inner Scotian Shelf. ...
  • Hypotheses to explain high-nutrient conditions in the open sea 

    Cullen, J. J.. 1991. "Hypotheses to explain high-nutrient conditions in the open sea." Limnology and Oceanography 36(8): 1578-1599.
    Oceanic high-nutrient, low-chlorophyll waters are characterized principally by the persistence of major nutrients at the sea surface. This condition indicates control of autotrophic production by something other than NO ...
  • Use of Diffuse Attenuation Coefficients to Calculate Bio-Optical Variables in Case 2 Waters 

    Davis, R. F., SE Craig, and J. J. Cullen. 2006. "Use of Diffuse Attenuation Coefficients to Calculate Bio-Optical Variables in Case 2 Waters." EOS, Transactions, American Geophysical Union.
    Four automated buoys are deployed in the coastal waters of Nova Scotia, Canada, for near real-time acquisition of several environmentally important optical variables, including surface radiance reflectance and subsurface ...
  • Observing Biologically Induced Optical Variability in Coastal Waters 

    CULLEN, JJ, AM CIOTTI, and MR LEWIS. 1994. "Observing Biologically Induced Optical Variability in Coastal Waters." PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) 2258: 115.
    No abstract available.
  • Nutrient Limitation of Marine Photosynthesis 

    CULLEN, JJ, XL YANG, and HL MACINTYRE. 1992. "Nutrient Limitation of Marine Photosynthesis." ENVIRONMENTAL SCIENCE RESEARCH 43: 88.
    No abstract available.
  • 3-D physical-biological coupled model to assess water-column impacts of bivalve aquaculture in a mussel farm in Ship Harbour, Nova Scotia 

    Ibarra, DA, K. Fennel, and J. J. Cullen. 2009. "3-D physical-biological coupled model to assess water-column impacts of bivalve aquaculture in a mussel farm in Ship Harbour, Nova Scotia." CMOS Congress 2009 - Sea and Sky Come to Life, Halifax, Nova Scotia (Canada), 31 May - 4 June 2009.
    Advances in 3-D ocean modeling, coupled ecosystem modeling, and bio-optical instrumentation, present the opportunity to examine the influence of bivalve aquaculture on pelagic dynamics. We designed a study to examine the ...

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