Search Results - "Nagels, J.W."

Retention and remobilization dynamics of fine particles and microorganisms in pastoral streams by Drummond, J.D., Davies-Colley, R.J., Stott, R., Sukias, J.P., Nagels, J.W., Sharp, A., Packman, A.I.

“…Both microbial metabolism and pathogen retention and remobilization are dependent on downstream transport of fine particles, which migrate in a series of…”
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Faecal bacteria yields in artificial flood events: quantifying in-stream stores by Muirhead, R.W., Davies-Colley, R.J., Donnison, A.M., Nagels, J.W.

“…Stream sediments have been recognised as an in-channel store of faecal contamination that can be mobilised during floods or other sediment-disturbing events…”
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Inactivation of faecal indicator micro-organisms in waste stabilisation ponds: interactions of environmental factors with sunlight by Davies-Colley, R.J, Donnison, A.M, Speed, D.J, Ross, C.M, Nagels, J.W

“…Sunlight exposure is considered to be the most important cause of “natural” disinfection in waste stabilisation ponds (WSPs). We examined the influence of…”
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Faecal contamination over flood events in a pastoral agricultural stream in New Zealand by Nagels, J W, Davies-Colley, R J, Donnison, A M, Muirhead, R W

“…Faecal bacterial dynamics during flood events were studied in the Topehaehae Stream near Morrinsville, New Zealand, in a catchment used for grazing dairy and…”
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Mass losses and changes in concentration of chlorpyrifos and cis- and trans-permethrin applied to the surface of a stream by Wilcock, R.J. (National Institute of Water and Atmospheric Research, Hamilton, New Zealand.), Northcott, G.L, Nagels, J.W

“…In the Te Tahi stream, New Zealand, chlorpyrifos and permethrin were added to an established study reach, and water was sampled 35, 67, 139, 271, 485, and 545…”
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Virus removal in a pilot-scale 'advanced' pond system as indicated by somatic and F-RNA bacteriophages by Davies-Colley, R J, Craggs, R J, Park, J, Sukias, J P S, Nagels, J W, Stott, R

“…Advanced pond systems (APS), incorporating high-rate ponds, algal settling ponds, and maturation ponds, typically achieve better and more consistent…”
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Optical characteristics of waste stabilization ponds: recommendations for monitoring by Davies-Colley, R J, Craggs, R J, Park, J, Nagels, J W

“…The optical character of waste stabilization ponds (WSPs) is of concern for several reasons. Algal photosynthesis, which produces oxygen for waste oxidation in…”
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Shade and flow effects on ammonia retention in macrophyte-rich streams: implications for water quality by Wilcock, Robert J, Scarsbrook, Mike R, Cooke, James G, Costley, Kerry J, Nagels, John W

“…Controlled releases of NH 4-N and conservative tracers (Br − and Cl −) to five reaches of four streams with contrasting macrophyte communities have shown…”
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Disinfection in a pilot-scale advanced pond system (APS) for domestic sewage treatment in New Zealand by DAVLES-COLLEY, R. J, CRAGGS, R. J, NAGELS, J. W

“…"Advanced" pond systems (APS) have the potential for improving treatment, including disinfection, over conventional WSPs. Disinfection in a pilot scale APS at…”
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Combined photosynthesis and mechanical aeration for nitrification in dairy waste stabilisation ponds by SUKLAS, J. P. S, CRAGGS, R. J, TANNER, C. C, DAVIES-COLLEY, R. J, NAGELS, J. W

“…New Zealand has 16,500 dairy farms (avg. 220 cows), with cows kept on pasture throughout the year. During the 9-month dairy season, the cows are milked twice a…”
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