Janzen, Henry, Ph.D.

Research Scientist


Contact Information:

5403 - 1 Avenue South
PO Box 3000
Lethbridge, Alberta T1J 4B1
Telephone: 403-317-2223
Fax: 403-382-3156
Email: henry.janzen@agr.gc.ca

Areas of Expertise:

  • carbon, nitrogen, and sulfur cycling
  • greenhouse gas emissions and mitigation
  • soil C sequestration

Current Projects:

  • Management effects on carbon in agricultural soils
  • Quantifying and reducing net greenhosue gas emissions from agricultural ecosystems
  • Interactions between agroecosystems and the global carbon cycle
  • Nitrogen exchanges between agroecosystems and the atmosphere
  • Long-term trends in the productivity and other ecosystem services of farmlands

Affiliations:

  • Adjunct professor, University of Manitoba

Research Publications:

The links below lead to abstracts with access to full text.

2016

2015

2014

2013

2012

2011

2010

2009

Other Science Related Publications:

2016

  • McGinn, S.M., Janzen, H.H., Coates, T.W., Beauchemin, K.A., and Flesch, T.K. (2016). "Ammonia emission from a beef cattle feedlot and its local dry deposition and re-emission.", GGAA Conference, Melbourne, Australia, February 14-18, 2016.

2015

  • Alemu, A.W., Little, S.M., Hao, X., Iwaasa, A.D., Baron, V.S., Chai, L.L., Janzen, H.H., Beauchemin, K.A., Thompson, D., and Kröbel, R. (2015). "Application of life cycle assessment approach to beef production systems in the Canadian prairies with regard to environmental impact and energy use efficiency.", LCA Conference XV - A bright green future, Vancouver, Canada, October 6-8, 2015, Presentation.
  • Chai, L.L., Kröbel, R., Beauchemin, K.A., Macdonald, D.J., Janzen, H.H., McGinn, S.M., and Bittman, S. (2015). "Greenhouse gases and ammonia emissions from grazing beef cattle in Alberta and Ontario Canada.", Canadian Society for Bioengineering Conference/CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, Canada, July 5-8, 2015, Presentation.
  • Chai, L.L., Kröbel, R., MacDonald, D., Bittman, S., Janzen, H.H., Beauchemin, K.A., McGinn, S.M., Little, S.M., and Martel, M. (2015). "Ammonia and nitrous oxide emission factors of land applied cattle manure in Alberta and Ontario", Conference of Soil Interfaces for Sustainable Development, Montreal, Quebec, Canada. (Abstract)
  • Chai, L.L., Kröbel, R., Macdonald, D.J., Bittman, S., Beauchemin, K.A., Janzen, H.H., and McGinn, S.M. (2015). "Developing nitrogen loss fractions for beef and dairy cattle manure storage systems in Canadian ecoregions: a comparison between West and East.", Canadian Society for Bioengineering Conference/CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, Canada, July 5-8, 2015.
  • Diochon, A., Gregorich, E.G., Ellert, B.H., Janzen, H.H., and Helgason, B.L. (2015). "The role of temperature and soil texture in decomposition: findings from a physical fractionation study.", Canadian Society of Soil Science Annual Conference, Montreal, QC, Canada, July 2015.
  • Helgason, B.L., Kuzmicz, S.C., Janzen, H.H., Gillespie, A.W., Hemmingsen, S.M., Yergeau, E., Greer, C.W., Germida, J.J., and Leinweber, P. (2015). "Historical Rotation ABC: changes in microbial community dynamics over 100 years of wheat production.", Canadian Society of Soil Science Annual Conference, Montreal, QC, Canada.
  • Kröbel, R., Janzen, H.H., Ellert, B.H., Beauchemin, K.A., and McAllister, T.A. (2015). "Agriculture is neither the culprit nor the solution to Climate Change.", “Our Common Future under Climate Change” Conference, Paris, France, July 7-10, 2015. (Poster)
  • Kröbel, R., Li, S., Little, S.M., Vanin, C., and Janzen, H.H. (2015). "Calculating greenhouse gases from the Black-Brook watershed, New Brunswick, using the Holos model.", Conference “On Sustainability 2015”, Copenhagen, Denmark.
  • Little, S.M., Beauchemin, K.A., Benchaar, C., Chai, L.L., Janzen, H.H., Kröbel, R., McGeough, E.J., and VanderZaag, A.C. (2015). "Demonstrating the effect of diet on the carbon footprint of a Canadian dairy scenario using whole-systems analysis and the Holos model: corn silage vs. alfalfa silage.", LCA Conference XV - A bright green future, Vancouver, Canada, October 6-8, 2015, Presentation.
  • Martel, M., Kröbel, R., Hrapovic, L., Janzen, H.H., McConkey, B.G., Glenn, A.J., and Wilson, H.F. (2015). "A Canadian water budget model for water footprint assessment of crop production.", Canadian Soil Science Society (IUSS-CSSS-AQSSS) Conference, Montreal, QC, Canada, July 5-10, 2015. (Poster)

2014

  • Desjardins, R.L., Worth, D.E., Vergé, X.P.C., VanderZaag, A.C., Kröbel, R., Janzen, H.H., Maxime, D., and Dyer, J.A. (2014). "The carbon footprint of agricultural products: A measure of the impact of agricultural production on climate change.", International Conference on Promoting Weather and Climate Information for Agriculture and Food Security, Antalya, Turkey, April 7-9, 2014.
  • Ellert, B.H., Helgason, B.L., Janzen, H.H., and Gregorich, E.G. (2014). "Soil Disturbance Effects on Plant Residue Decay in Canadian Agricultural Soils.", Canadian Society of Soil Science Annual Meetings, Banff, AB, Canada, May 2014.
  • Gillespie, A.W., Sanei, H., Diochon, A., Tarnocai, C., Janzen, H.H., Regier, T.Z., Chevrier, D., Dynes, J.J., and Gregorich, E.G. (2014). "Biological stability of soil organic matter is related to thermal and chemical properties.", Complex Soil Systems SSSA/Bouyoucos Funds, Berkeley Lab, DOE, Berkeley, CA, USA, September 3-5, 2014.
  • Gillespie, A.W., Sanei, H., Diochon, A., Tarnocai, C., Janzen, H.H., Regier, T.Z., and Gregorich, E.G. (2014). "Using thermal and spectroscopic (XANES) indices to understand the biological stability of soil organic matter.", American Geophysical Union (AGU) Fall Meeting, San Fransisco, CA, USA, December 15-19, 2014.
  • Gregorich, E.G., Ellert, B.H., Helgason, B.L., and Janzen, H.H. (2014). "Soil disturbance effects on decomposition of plant residues in Canadian agricultural soils.", 20th World Congress of Soil Science, Jeju, South Korea, June, 2014, Presentation.
  • Gregorich, E.G., Ellert, B.H., Janzen, H.H., and Helgason, B.L. (2014). "Plant residue decay in diverse Canadian Soils.", American Society of Agronomy Annual Meetings, Long Beach, CA, USA, November 2014, Presentation.
  • Gregorich, E.G., Ellert, B.H., Janzen, H.H., and Helgason, B.L. (2014). "Plant residue decay in diverse Canadian soils.", 20th World Congress of Soil Science, Jeju, South Korea, June 8-13, 2014, Presentation.
  • Helgason, B.L., Kuzmicz, S.C., Janzen, H.H., Gillespie, A.W., Hemmingsen, S.M., Yergeau, E., Greer, C.W., Germida, J.J., and Leinweber, P. (2014). "Historical Rotation ABC: microbial community structure and diversity over 100 years of wheat production.", 1st global Soil Biodiversity Conference, Dijon, France, December 2014, Presentation.
  • Smith, E.G. and Janzen, H.H. (2014). "The value of soil quality indices in crop production for western Canada.", 2014 Canadian Economics Association and the Canadian Agricultural Economics Society annual joint meeting, Simon Fraser University, Vancouver, BC, Canada, May 29 - June 1, 2014.

2013

  • Chai, L.L., Kröbel, R., Janzen, H.H., Beauchemin, K.A., McGinn, S.M., Bittman, S., Atia, A., and Edeogu, I. (2013). "A mass balance model based on total ammoniacal nitrogen for estimating ammonia volatilization from beef cattle manure management in Alberta in Canada.", ASABE Annual International Meeting, Kansas City, MO, USA, July 21-24, 2013, paper #:1596572.
  • Ellert, B.H., Gregorich, E.G., and Janzen, H.H. (2013). "Measuring and Monitoring Soil Carbon Storage.", ASA/CSSA/SSSA International annual meeting, Tampa, Florida, USA, November 3-6, 2013, Oral presentation.
  • Flaten, D.N., Janzen, H.H., Ominski, K.H., and Taylor, A.A. (2013). "Video-conferencing to deliver a graduate course on agricultural sustainability.", Joint annual meetings of the Canadian Society of Soil Science, Manitoba Soil Science Society, and Canadian Society of Agricultural and Forest Meteorology, Fort Garry Hotel, Winnipeg, MB, Canada, July 22-25, 2013, Oral presentation.
  • Janzen, H.H. (2013). "Agricultural sustainability: some thoughts from a Canadian (science) perspective.", T2013 Tetrapartite meetings, Norwich, UK, June 2-5, 2013.
  • Janzen, H.H. (2013). "Earth’s malleable membrane.", Joint Annual Meetings of the Canadian Society of Soil Science, Manitoba Soil Science Society, Canadian Society of Agricultural and Forest Meteorology, Winnipeg, MB, Canada, July 22-25, 2013, Oral presentation.
  • Janzen, H.H. (2013). "Managing soil carbon for manifold benefits.", STAP/GEF Special Session, Washington DC, USA, October 10, 2013, Oral presentation.
  • Kröbel, R., Janzen, H.H., Little, S.M., and Li, S. (2013). "Preliminary Holos model assessment of GHG emissions from crop production in the Black-Brook watershed, NB, during the years 1988 – 1997.", CSSS/MSSS/CSAFM 2013 Annual Meeting, Winnipeg, MB., Canada, June 22-25, 2013.
  • Li, L., Janzen, H.H., Larney, F.J., and Angers, D.A. (2013). "Long-term recovery of soil organic matter and aggregate stability in an artificially eroded soil under various one- time amendments.", Canadian Society of Soil Science-Manitoba Soil Science Soc.-Can. Soc. Agric. Forest Meteorology Joint Ann. Meeting, Winnipeg, MB, Canada, July 22-25, 2013, pp. 111. (Abstract)
  • Li, L., Janzen, H.H., Larney, F.J., and Angers, D.A. (2013). "Long-term recovery of soil organic matter and aggregate stability in an artificially eroded soil under various one- time amendments.", Joint Annual Meetings of the Canadian Society of Soil Science, Manitoba Soil Science Society, Canadian Society of Agricultural and Forest Meteorology, Winnipeg, MB, Canada, July 22-25, 2013. (Poster)
  • Little, S.M., Beauchemin, K.A., Janzen, H.H., Kröbel, R., and Maclean, K. (2013). "Holos - Methodology & Algorithms for Version 2.0.", AAFC Lethbridge, Lethbridge, AB, March 21, 2013. (Presentation)
  • McGeough, E.J., Little, S.M., Janzen, H.H., McAllister, T.A., McGinn, S.M., and Beauchemin, K.A. (2013). "Greenhouse gas emissions from dairying in Eastern Canada – Effects of varying dairy cow replacement rate.", CSAS-CMSA Joint Annual Meeting, Banff Park Lodge Resort Hotel and Conference Centre, Banff, AB, Canada, June 18-20, 2013, P42, pp. 42. (Poster)

2012

  • McGeough, E.J., Little, S.M., Janzen, H.H., McAllister, T.A., McGinn, S.M., and Beauchemin, K.A. (2012). "Life-cycle assessment of greenhouse gas emissions from dairy production in Eastern Canada: A case study.", Symposium on "Agriculture and greenhouse gases", Oslo, Norway, November 5-6, 2012, Oral Presentation.

2011

  • Beauchemin, K.A., McGeough, E.J., Little, S.M., Janzen, H.H., McAllister, T.A., McGinn, S.M., and Maclean, K. (2011). "GHG modelling activities: an overview.", Seminar on Greenhouse Gases from Agriculture, Norwegian University of Life Sciences, Norway, June 29, 2011. (Presentation)
  • Beauchemin, K.A., McGeough, E.J., Little, S.M., Janzen, H.H., McAllister, T.A., McGinn, S.M., and Maclean, K. (2011). "The Holos Model: reflections on progress and future plans.", Norway, June 2011. (Presentation)
  • Beauchemin, K.A., McGeough, E.J., and Janzen, H.H. (2011). "Life cycle assessment - A holistic approach to assessing greenhouse gas emissions from beef and dairy production.", 1st Joint meeting of the American Society of Animal Science and the Association Argentina de Production Animal, Mar del Plata, Argentina, October 4-7, 2011. (Presentation)
  • Dai, M., Hamel, C., St. Arnaud, M., Grant, C.A., Lupwayi, N.Z., Janzen, H.H., Yang, X.Q., and Zhou, Z. (2011). "Composition and diversity of arbuscular mycorrhizal fungi in cropping system associated with different soil zones using pyrosequencing.", Soils Ecology Society Meeting 2011, University of British Columbia - Okanagan, Kelowna, BC, Canada, May 24-27, 2011, pp. 43.
  • DePauw, R.M., Malhi, S.S., Bullock, P.R., Gan, Y.T., McKenzie, R.H., Larney, F.J., Janzen, H.H., Cutforth, H.W., and Wang, H. (2011). "Wheat Production in Northern High Latitudes – Canadian example.", in Bonjean, A., Angus, W., and Van Ginkel, M. (eds.) - The World Wheat Book A History of Wheat Breeding. Vol. 2, Lavoisier Tech et Doc, Paris, France, pp. 607-651.
  • Janzen, H.H. (2011). "After 100 years, what is left to learn?", Lethbridge Historical Plots Centennial Workshop, Lethbridge, AB, Canada, June 21-22, 2011. (Presentation)
  • Janzen, H.H. (2011). "Changes in cropping and tillage practices in Alberta: A recent revolution.", No-till and Crop Diversification as Base for Soil Conservation and Achieving National Food Security, Shortandy, Kazakhstan, July 23-24, 2011, pp. 78-84.
  • Janzen, H.H. (2011). "Listening to the land, from one century to the next.", Dr. Alex Johnston Lecture,, Galt Museum, Lethbridge, AB, Canada, November 10, 2011. (Presentation)
  • Janzen, H.H. (2011). "Trial plots have stories to tell.", Western Producer, September 22, 2011, pp. 18-19.
  • Janzen, H.H. and Ellert, B.H. (2011). "Rotations ABC and U: A centennial tribute.", Lethbridge Historical Plots Centennial Workshop, Lethbridge, AB, Canada, June 21-22, 2011. (Presentation)
  • Larney, F.J. and Janzen, H.H. (2011). "Use of manure for restoring soil productivity.", Manure Management Update 2011, Lethbridge, AB, Canada, January 17, 2011, pp. 9-16.
  • Larney, F.J., Willms, W.D., Smith, E.G., Janzen, H.H., Ellert, B.H., and Miller, J.J. (2011). "Other long-term experiments at Lethbridge Research Centre.", Historical Rotations Workshop, Lethbridge, AB, Canada, June 21-22, 2011. (Presentation)

2010

  • Beauchemin, K.A., Janzen, H.H., Little, S.M., McAllister, T.A., and McGinn, S.M. (2010). "Mitigation of greenhouse gas emissions from beef production in Canada – an evaluation using Holos-R life cycle analysis.", 4th International Greenhouse Gases and Animal Agriculture Conference (GGAA), Banff Park Lodge, Banff, AB, Canada, October 3-8, 2010. (Abstract)

2009

  • Benke, M.B., Hao, X., Janzen, H.H., McAllister, T.A., Caffyn, P.R., and Schoenau, J.J. (2009). "Effect of DDGS manure on soil and plant: Preliminary results of the greenhouse study.", Soils and Crops Workshop 2009, Western College of Veterinary Medicine, Saskatoon, SK, Canada, February 25-26, 2009. (Workshop)
  • Hao, X., Benke, M.B., Caffyn, P.R., Janzen, H.H., Schoenau, J.J., and McAllister, T.A. (2009). "Using manure from cattle fed dried distillers’ grains with solubles (DDGS) as fertilizer: Effects on nutrient accumulation in soil and uptake by barley forage.", 2009 ASA-CSSA-SSSA International Annual Meeting, Pittsburgh, PA, USA, November 1-5, 2009. (Poster)
  • Janzen, H.H. (2009). "A century of planting trees: Musings on one hundred years of research. Guest Essay.", Canadian Journal of Soil Science, 89(3), pp. 247-254.
  • Little, S.M., Lindeman, J., Maclean, K., and Janzen, H.H. (2009). "Holos - GHG software for farms.", published by AAC Centre de recherche et de développement en horticulture, Saint-Jean-sur-Richelieu, QC, 2 pages. (Factsheet)
  • Little, S.M., Lindeman, J., Maclean, K., and Janzen, H.H. (2009). Holos - A tool to estimate and reduce GHGs from farms., Canada: Agriculture and Agri-Food Canada (AAFC)/Agriculture et Agroalimentaire Canada (AAC). (Manual)
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