Principal Scientist
Academic and professional history:
- 2004-present – Principal Scientist, Lincoln Environmental Research, Lincoln Ventures Ltd
- 1998-2004 – Environmental Scientist, Environmental Group, Lincoln Ventures Ltd
- 1995-1998 – Postdoctoral Research Associate, Institute of Soil Ecology (GSF-IBOe), Germany
- 1991-1994 – Doctoral Research Fellow, GSF-IBOe, Munich Research Association for Agricultural Ecosystems (FAM), Germany
Member of:
- NZ Society of Soil Science
- NZ Hydrological Society
- Research article referee to Journal of Environmental Quality, Geoderma, Hydrological Processes, Australian Journal of Soil Research, and Journal of Hydrology (NZ).
Research subjects:
- Water, nitrogen, and carbon dynamics in the vadose zone-groundwater continuum
- Moisture measurement
- Waste treatment
Current projects:
- Nitrogen flowpaths and groundwater quality in a dairying catchment (Progress Report 3653/3)
- Vadose zone nitrogen transformations
- Nitrogen attenuation in groundwater (Progress Report 3653/3, HydroEco 2009 abstract)
- Hillslope hydrology
Recent publications
Refereed Journal Articles
Bidwell, V.J., Stenger, R. and G.F. Barkle (2008) Dynamic analysis of groundwater discharge and partial-area contribution to Pukemanga Stream, New Zealand. Hydrol. Earth Syst. Sci., 12, 975-987, 2008.
Stenger, R., Barkle, G.F., Burgess, C., Wall, A. and J. Clague (2008) Low nitrate contamination of shallow groundwater in spite of intensive dairying: the effect of reducing conditions in the vadose zone - aquifer continuum. Journal of Hydrology (NZ), 47(1): 1-24.
Stenger, R., Wöhling, T., Barkle, G.F., and Wall, A. (2007) Relationship between dielectric permittivity and water content for vadose zone materials of volcanic origin. Australian Journal of Soil Research, 45: 299-309.
Barkle, G., Clough, T., and Stenger, R. (2007) Denitrification capacity in the vadose zone at three sites in the Lake Taupo catchment, New Zealand. Australian Journal of Soil Research, 45:91-99.
Mertens, J., Stenger, R. and G.F. Barkle (2006) Multiobjective inverse modeling for soil parameter estimation and model verification. Vadose Zone Journal, 5: 917-933.
Müller, K., Stenger, R., Rahman A. (2006) Herbicide loss in surface runoff from a pastoral hillslope in the Pukemanga catchment (New Zealand): Role of pre-event soil water content. Agriculture, Ecosystems & Environment, 112: 381-390.
Stenger, R., Barkle, G.F., and C.P. Burgess (2005) Laboratory calibrations of water content reflectometers and their in-situ verification. Australian Journal of Soil Research, 43: 607-615.
Mertens, J. , Barkle, G.F. and R. Stenger (2005) Numerical analysis to investigate the effects of the design and installation of Equilibrium Tension Plate Lysimeters (ETPLs) on leachate volume. Vadose Zone Journal, 4: 488-499.
Stenger, R., Barkle, G.F., and C.P. Burgess (2002) Mineralisation of organic matter in intact versus sieved/refilled soil cores. Australian Journal of Soil Research, 40: 149-160.
Stenger, R., Priesack, E., and F. Beese (2002) Spatial variation of nitrate-N and related soil properties at the plot-scale. Geoderma, 105: 259-275.
Stenger, R., Barkle, G.F., and C.P. Burgess (2001) Mineralization and immobilization of C and N from dairy farm effluent (DFE) and glucose plus ammonium chloride solution in three grassland topsoils. Soil Biology and Biochemistry, 33: 1037-1048.
Barkle, G.F., Stenger, R., Sparling, G.P., and D.J. Painter (2001) Immobilisation and mineralisation of carbon and nitrogen from dairy farm effluent during laboratory soil incubations. Australian Journal of Soil Research, 39: 1407-1417.
Barkle, G.F., Stenger, R., Brown, T.N., Ledgard, S.F. and D.J. Painter (2001) Fate of 15N-labelled faeces fraction of dairy farm effluent (DFE) irrigated onto soils under different water regimes. Nutrient Cycling in Agroecosystems, 59: 85-93.
Refereed Book Chapters
Hantschel, R. and R. Stenger (2001) Site Effects on the Variability of Nitrogen Turnover at the Scheyern Experimental Farm. In: Tenhunen, J.D., Lenz, R. and Hantschel, R. (Eds.) Ecosystem Approaches to Landscape Management in Central Europe. Ecological Studies Vol. 147, Springer-Verlag, Berlin/Heidelberg, pp 229-247.
Priesack, E., Achatz, S., and R. Stenger (2001) Parametrisation of soil nitrogen transport models by use of laboratory and field data. In: Shaffer, M., Ma L., and S. Hansen (Eds.) Modeling Carbon and Nitrogen Dynamics for Soil Management. Lewis Publishers, pp 461-484.
Proceedings and Reports
Stenger, R., Bidwell, V., Wall, A., Clague, J. and Moorhead B. (2009) Nitrogen Contamination of Surface waters: What are the important flowpaths in the Toenepi dairying catchment? Progress Report No. 3653/3, September 2009.
Barkle, G.F., Wall, A., Stenger, R. (2008) Do you know which water you are sampling? - Separating groundwater and event water in stream discharge. Proceedings of the NZ Land Treatment Collective Technical Session 29, Queenstown April 2008.
Stenger, R., Barkle, G., Wall, A., and Clague, J. (2007) Low groundwater N contamination in spite of high land use intensity – the Toenepi dairying catchment experience. In Designing sustainable farm: Critical aspects of soil and water management (Eds L.D. Curry and L.J. Yates). Occasional Report No.20. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. pp 86-94.
Müller, K., R. Stenger, and A. Rahman (2006) Seasonal Variation of 2,4-D-Export through Surface Runoff from Pasture. New Zealand Plant Protection 59: 1-6.
Stenger, R., G. Barkle, V., O. Andler, A. Wall, and T. Clough (2006) Characterisation of the Vadose Zone in a Lake Taupo Subcatchment. In Implementing sustainable nutrient management strategies in agriculture (Eds L.D. Curry and J.A. Hanly). Occasional Report No. 19. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. pp 197-207.
Stenger, R., G. Barkle, A. Wall, O. Andler, and V. Bidwell (2005) Nitrogen contamination of surface waters in the Toenepi Catchment: What are the important flowpaths? Progress Report No. 3653/2, July 2005.
Stenger, R., G. Barkle, V. Bidwell, C. Burgess, A. Wall, M. Haas, and J. Mertens (2005) From the Paddock to the Stream – Unravelling the Nitrogen Flowpaths in a New Zealand Dairying Catchment. Proceedings of the 2005 Watershed Management Conference ‘Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges’ (19-22 July 2005), Williamsburg, Virginia. 10pp. (Editor Glenn E. Moglen), Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers.
Müller, K., Stenger, R., Rahman A. (2005) Herbicide runoff on a pastoral hill slope – a case study. Bringing Groundwater Quality Research to the Watershed Scale (Proceedings of GQ2004, the 4th International Groundwater Quality Conference, held at Waterloo, Canada, July 2004). IAHS Publ. 297. pp. 81-88.
Collins, R., J. Sukias, G. Barkle, and R. Stenger (2005) Field experiments to determine the transformations of nitrogen within a Lake Taupo subcatchment. In Developments in fertiliser application technologies and nutrient management (Eds L.D. Curry and J.A. Hanly). Occasional Report No. 18. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. pp 132-140.
Stenger, R., G. Barkle, C. Burgess, A. Wall, M. Haas, N. McCool, V. Bidwell, and J. Mertens (2004) Nitrogen contamination of Toenepi Stream - What role does groundwater play? Programme and Abstracts for the New Zealand Hydrological Society 2004 Conference, Queenstown, pp 155-156.
Stenger, R., G. Barkle, C. Burgess, A. Wall, M. Haas, N. McCool, V. Bidwell, and J. Mertens (2004) Nitrogen contamination of surface waters in the Toenepi Catchment: What are the important flowpaths? Progress Report No. 3653/1, September 2004.
Stenger, R., Barkle, G. (2004) N leaching from soils irrigated with domestic effluent – what has modelling told us so far? Water & Wastes in New Zealand, 135: 30-32.
Mueller, K., Adams, R., Stenger, R. (2004) Soils in the Pukemanga catchment with emphasis on hydraulic properties. AgResearch Client report to NIWA, Pukemanga Working Group.
Stenger, R., Burgess, C., Barkle, G. (2003) Monitoring of the Shallow Groundwater in the Toenepi Catchment. Client report to Environment Waikato and Fonterra Research (Report No 4952-4959/1).
Davie, T., Payne, J., Elliott, S., Adams, R., Rutherford, K., Barkle, G.F., Stenger, R., Stewart, M. (2002): Do we understand the flowpaths at Pukemanga? NZ Hydrological Society Symposium, “All the easy water has gone”, Blenheim, December 2002.
Stenger, R., G.F Barkle, C.P. Burgess, L. Barton, S. Pandey, L. Duncan, A. Roberts, M. Taylor, L. Schipper, E. Priesack (2002) Water and nitrogen dynamics in soils irrigated with domestic effluent: Measurements and simulations. In: Proceedings of the Technical Session No 23, New Zealand Land Treatment Collective, Whangamata, NZ, pp 86-90.
Burgess, C.P., Barkle, G.F, Singleton, P., Hill, R., Stenger, R. and Fenton, T. (2002) Does water and/or effluent irrigation increase nitrogen leaching from pumice soils under dairying? Proceedings of the workshop ‘Dairy Farm Soil Management’ (13-14 Feb., 2002), pp 287-300. Fertilizer & Lime Research Centre 15th Workshop in conjunction with New Zealand Fertiliser Manufacturers’ Research Association 27th Technical Conference. Massey University, New Zealand.
Haberbosch, C., Ruser, R., Stenger, R., Flessa, H. and Priesack, E. (2001) Modelling N2O-emissions from a potato cropped soil. In: Proceedings of the EUROTRAC-2 Symposium 2000 (Eds.: Midgley, P.M., Reuther, M., Williams, M..), Springer-Verlag Berlin, Heidelberg, pp 1412-1416.
Tel: +64 7 858 4844
Fax: +64 7 858 4841
Email:
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@lvl.co.nz