Scientific

Knowledge and experience

• Expert knowledge in nitrogen dynamics and management in the environment.

• Expert knowledge in wastewater treatment systems

• Expert knowledge in land treatment systems.

• Expert knowledge in water quality restoration and catchment management.

• Working knowledge in air, water and soil pollution/contamination.

• University teaching and research in Soil and Earth Sciences.

• Research and conference publications (Publications/Papers/Reports).

• Expert witness.

• Peer review of scientific research papers.

• PhD (Soil Science, Lincoln University, Canterbury, New Zealand)

• Advanced Sustainable Nutrient Management Massey University Certificate Holder

 Brief work outputs:

• Nitrification in soil  (Nitrosomonus spp and Nitrobacter spp enumeration biochemical study).

• Evaluation of soil zinc and copper extraction methods (five methods) against plant available zinc and copper.

• Aggregate stability in cropping soils.

• Evaluation of laboratory methods (14 methods) for measuring pasture and crop available nitrogen.

• Ammonia volatilisation loss potentials from surface applied urea from a range of NZ soils including immobilisation of nitrogen using N15 technique.

• Estimation of nitrate leaching losses in shallow aquifers using lithology and groundwater nitrate levels.

• Performance of two-pond and barrier ditches systems in treating farm dairy effluent.

• Determination of sustainable nitrogen loading rate for farm dairy application to land in the absence of aquifer information.

• Determination of sustainable dairy factory and sewage effluent loading rates under pasture and forest respectively.

• Seepage of farm effluent oxidation ponds.

• Predicting nitrate leaching from agricultural soils based on land use and soil and aquifer types.

• Effects of different fertiliser-N loading rates on leaching and shallow aquifer.

• Referee (in the field of water and soil quality and waste application to land) for acceptance of scientific research papers for publications by research publications.

• Developed a 100 page training manual in Sewage Wastewater Management under the Resource Management Act

• Developed a 100 page workshop manual in Farm Nutrient Management under the Resource Management Act

• Developed an exclusive 100 page workshop manual in Nitrogen in the Environment