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Juliet Clague


Juliet Clague

BSc (Tech), MAppSc (Hons), PhD

Juliet has a PhD in Soil Science from Lincoln University. She joined Lincoln Agritech in Hamilton in 2006 as a Science Technician and has since then contributed with field and laboratory work to Lincoln Agritech’s vadose zone and groundwater research.

Her PhD project, funded through the MBIE ‘Groundwater Assimilative Capacity’ programme, focussed on nitrate attenuation in shallow groundwater systems. Her project used isotopic methods and N gas (N2O, N2) production measurements to locate zones conducive to denitrification, quantify denitrification and identify the electron donors involved. Her work in this area continues and is focussed on applying these techniques to new catchments with different hydrogeological characteristics.

Her particular focus is the use of various methods to:

  • Locate zones conducive to denitrification
  • Quantify denitrification
  • Identify the electron donors involved

Academic and professional history:

  • 2014-present – Scientist, Lincoln Agritech Ltd, Hamilton
  • 2009-2014 – Science Technician and PhD student, Lincoln Ventures Ltd & Lincoln University
  • 2006-2009 – Science Technician, Lincoln Ventures Ltd, Hamilton
  • 2004-2005 – MSc, Massey University
  • 2003-2004 – Sample Preparation Technician, Hill Laboratories
  • 2001-2002 – Instrument Technician, Hill Laboratories

Her research subjects are:

  • Groundwater Quality
  • Contaminant Transport and Transformations in the Subsurface


Routine stream monitoring data enables the unravelling of hydrological pathways and transfers of agricultural contaminants through catchments, Science of the Total Environment
Stenger R, Park J, Clague J.
Improving accuracy of quantifying nitrate removal performance and enhancing understanding of processes in woodchip bioreactors using high-frequency data, “Science of The Total Environment”
Rivas A, Barkle G, Sarris T, Park J, Kenny A, Maxwell B, Stenger R, Moorhead B, Schipper L, Clague J
High-frequency spatiotemporal data improves estimates of nitrate removal performance and understanding of processes in woodchip bioreactors, Adaptive Strategies for Future Farming
Rivas A, Barkle G, Park J, Moorhead B, Maxwell B, Stenger R, Schipper L, Clague J
Combining surface water monitoring, age-dating, and parsimonious modelling to unravel water and contaminant pathways through catchments, Adaptive Strategies for Future Farming
Stenger R, Park J, Morgenstern U, Hadfield J, Rivas A, Clague J
Woodchip bioreactors – design considerations, New Zealand Land Treatment Collective Annual Conference: Improving outcomes for land treatmen
Barkle, G., Rivas, A., Moorhead, B., Stenger, R., Schipper, L., & Clague, J.
The importance of the hydrological pathways in exporting nitrogen from grazed artificially drained land Journal of Hydrology, 597: 126218
Barkle, G., Stenger, R., Moorhead, B., Clague, J
A novel method for calculating nitrate removal rates in woodchip bioreactors using data from high-frequency monitoring. Weathering the Storm Conference Handbook, Oral abstracts.
Rivas, A., Barkle, G., Maxwell, B., Moorhead, B., Stenger, R., Park, J., Schipper, L., and Clague, J
Synoptic flow gaugings/stream sampling to unravel heterogeneity within catchments NZHS, NZ Rivers Group and NZFSS Joint Conference
Stenger. R, Rivas.A, Brakle.G, Clague.J, Moorhead.B, Park.J, Morgenstern.U
Synoptic gaugings/samplings to elucidate water and nutrient fluxes within catchments, NZ-China Water Research Centre workshop
Stenger, R, Rivas, A, Barkle, G, Owers, J, Clague, J, Moorhead, B, Park, J, Morgenstern, U.
Nitrate removal and secondary effects of a woodchip bioreactor for the treatment of subsurface drainage with dynamic flows under pastoral agriculture, “Ecological Engineering”
Rivas, A., Barkle, G., Stenger, R., Moorhead, B. Clague, J
Determining spatial variability of nitrate removal in a woodchip bioreactor through high frequency monitoring at multiple locations, FLRC 2020
Aldrin Rivas, Greg Barkle, Bryan Maxwell, Brian Moorhead, Roland Stenger, Louis Schipper, François Birgand, Juliet Clague
Pilot-scale woodchip bioreactor for removing nitrate from artificial drainage in a Waikato dairy farm, A Workshop on Innovations for Attenuating Nutrient Loss from Farms
A. Rivas, G. Barkle, B. Moorhead, J. Clague, & R. Stenger