Menu Close
Honorary Senior Research Fellow, The University of Queensland

Researcher in population dynamics and their social and environmental impacts, sustainable agriculture, crop nutrition, food security.


  • 2007–2015
    Honorary Senior Research Fellow, School of Agriculture and Food Sciences, University of Queensland
  • 1992–2006
    Senior Research Officer, School of Agriculture and Food Sciences, University of Queensland


  • 2006 
    University of Queensland, Grad Dip Ed
  • 1988 
    University of Melbourne, PhD
  • 1982 
    University of Melbourne, Bachelor of Agricultural Science (Hon 1)


  • 2016
    Population Projections: Recipes for Action, or Inaction? , Population and Sustainability 1(1), 45-57
  • 2014
    Ageing paranoia, its fictional basis and all too real costs., In “Sustainable Futures: Linking Population, Resources and the Environment.” (Eds J Goldie and K Betts). CSIRO Publishing, Melbourne. ISBN: 9781486301898 pp 47-60
  • 2013
    The cost of population growth in the UK. , Report for Population Matters.
  • 2013
    Nutritional Deficiencies and Toxicities, In: Clark, C.A. (ed) “Compendium of Sweetpotato Diseases, Second Edition,” American Phytopathological Society.
  • 2012
    The burden of durable asset acquisition in growing populations., Economic Affairs 32(1), 31-37.
  • 2010
    Yam Nutrition: Nutrient Disorders and Soil Fertility Management., ACIAR Monograph No. 144, Australian Centre for International Agricultural Research, Canberra, 112 pp.
  • 2010
    What’s Carrying Capacity Got to Do with It?, Issues Magazine, Volume 91 “Population”, June 2010. Lead article pp 4-7. Control Publications, Australia.
  • 2008
    Root distribution of yam (Dioscorea alata) determined by strontium tracer., Experimental Agriculture 44(2), 223-233.
  • 2008
    Crop development and root distribution in lesser yam (Dioscorea esculenta): implications for fertilization., Experimental Agriculture 44(2), 209-221.
  • 2007
    Nutrient deficiencies in lesser yam (Dioscorea esculenta) characterized using constant-water-table sand culture., J. Plant Nutr. Soil Sci. 170(2), 273-282.
  • 2006
    Nutrient deficiencies in Greater Yam and their effects on leaf nutrient concentrations., J. Plant Nutrition 29(9), 1663-1674.
  • 1997
    Nutrient Disorders of Sweet Potato, ACIAR Monograph 48, 136p.

Professional Memberships

  • International Society for Tropical Root Crops (ISTRC)
  • International Union for the Scientific Study of Population (IUSSP)
  • International Society for Ecological Economics