Integrated Catchment Management

Rob Davies-Colley

Principal Scientist - Aquatic Pollution

E-mail: EmailSend email to r.davies-colley
Address: National Institute of Water and Atmospheric Research Ltd, Hamilton, New Zealand.
Phone: 64-7-856-7026, (direct line: 64-7-8561725)
Fax: 64-7-856-0151.

Academic Qualifications

Professional Affiliations

Awards and Honours

Role at NIWA Hamilton

Current Projects 

Selected Publications

Smith, D. G.; Davies-Colley, R. J.; Knoeff, J; Slot, G. W. J. 1997: Optical characteristics of New Zealand rivers in relation to flow. Journal of the American Water Resources Association 33: 301-312.
Davies-Colley, R. J. 1997: Stream channels are narrower in pasture than in forest. N Z journal of marine and freshwater research (Spec. issue) 31: 599- 608.
Rutherford, J. C.; Blackett, S.; Blackett, C.; Saito, L.; Davies-Colley, R. J. 1997: Predicting the effects of shade on water temperature in small streams. NZ journal of marine and freshwater research (Spec. issue). 31: 707- 722.
Quinn, J. M.; Cooper, A. B.; Davies-Colley, R. J.; Rutherford, J. C.; Williamson, R. B. 1997: Land-use effects on habitat, periphyton, and benthic invertebrates in Waikato hill country streams. NZ journal of marine and freshwater research (Spec. issue) 31: 579- 598.
Davies-Colley, R. J.; Payne, G. W. 1998: Measuring stream shade. Journal of the North American Benthological Association 17: 250- 260.
Davies-Colley, R. J.; Quinn, J. M. 1998: Stream lighting in five regions of North Island New Zealand: control by channel size and riparian vegetation. NZ journal of marine and freshwater research 32: 391- 605
Davies-Colley, R. J.; Speed, D. J.; Donnison, A. M.; Ross, C. M.; Nagels, J. W. 1999: Inactivation of faecal indicator micro-organisms in waste stabilisation ponds: interactions of environmental factors with sunlight. Water research 33: 1220- 1230.
Davies-Colley, R. J.; Donnison, A. M.; Speed, D. J. 2000: Towards a mechanistic understanding of pond disinfection. Water Science and Technology 42(10-11): 149-158.
Davies-Colley, R. J.; Payne, G. W.; van Elswijk, M. 2000: Microclimate gradients across a forest edge. New Zealand journal of ecology 24: 111-121.
Davies-Colley, R. J. 2000. Can riparian forest be restored without destabilizing stream channels and discrediting managers? In Wigington, P. J. and Beschta, R. L. (eds) Proceedings of the International Conference on Riparian Ecology and Management in Multi-Land Use Watersheds, American Water Resources Association, Portland, Oregon, 27-30 August, 2000. Pp 381-385.
Davies-Colley, R. J. and G. W. Payne, 2000: A simple approach for characterizing stream and riparian lighting. In Wigington, P. J. and Beschta, R. L. (eds) Proceedings of the International Conference on Riparian Ecology and Management in Multi-Land Use Watersheds, American Water Resources Association, Portland, Oregon, 27-30 August, 2000. Pp 499-503.
Collier, K. J.; Rutherford, J. C.; Quinn J. M.; Davies-Colley, R. J. 2001. Forecasting rehabilitation outcomes for degraded New Zealand pastoral streams. Water science and technology 43:175-184.
Nagels, J. W.; Davies-Colley, R. J.; Smith, D. G. 2001: A water quality index for contact recreation in New Zealand . Water science and technology 43:285-292.
Davies-Colley, R. J.; Smith, D. G., 2001: Turbidity, suspended sediment and water clarity. A review. Journal of the American Water Resources Association 37(5): 1-17.
Sinton, L. W.; Hall, C. H.; Lynch, P. A.; Davies-Colley, R. J. 2001: Sunlight inactivation of fecal indicator bacteria and bacteriophages from waste stabilization pond effluent in fresh and saline waters. Applied and Environmental Microbiology 68: 1122-1131.
Nagels, J. W.; Davies-Colley, R. J.; Donnison, A. M; Muirhead, R. W. 2001: Faecal contamination over flood events in a pastoral agricultural stream in New Zealand. Water science and technology 45(12): 45-52.
Davies-Colley, R. J.; Nagels, J. W. 2002. Effects of dairying on water quality of lowland streams in Westland and Waikato. Proceedings of the NZ Grassland Association 64: 107-114.
Duggan, I. C.; Collier, K. J.; Champion, P. D.; Croker, G. F.; Davies-Colley, R. J.; Lambert, P. W.; Nagels, J. W.; Wilcock, R. J. 2002: Ecoregional differences in macrophyte and macroinvertebrate communities between Westland and Waikato: are all New Zealand lowland streams the same? NZ journal of marine and freshwater research 36: 831-845.
Davies-Colley, R. J.; Craggs, R. J.; Nagels, J. W. 2003: Disinfection in a Pilot-Scale Advanced Pond System (APS) for Domestic Sewage Treatment in New Zealand. Water science and technology (accepted).
Craggs R. J., Davies-Colley R. J., Tanner C.C. and Sukias J.P.S. 2003: Advanced ponds systems: performance with high rate ponds of different depths and areas. Water science and technology (accepted).
Craggs R. J., Tanner, C.C., Sukias J. P. S. and Davies-Colley R. J. 2002: Dairy farm wastewater treatment by an advanced pond system. Water science and technology (accepted).
Parkyn, S. M.; Davies-Colley, R. J.; Halliday, N. J.; Scarsbrook, M. R.; Nagels, J. W., Marden, M; Rowan, D. 2003. Environmental condition of streams in soft rock terrain. Does pine afforestation improve stream health in pasture streams? NZ journal of marine and freshwater research (submitted).
Davies-Colley, R. J.; Nagels, J. W.; Smith, R.; Young, R.; Phillips, C. 2003: Water quality impacts of cows crossing the Sherry River, Tasman District, New Zealand. Water Science and Technology (submitted).