Environmental effects of sheep farming

Environmental Impacts of Pasture-Based Farming

Volumn , Issue , 2008, Pages 144-186

  Scott, John T ^a   Robertson, Fiona A ^b  

^a LANDCARE RESEARCH   (New Zealand)

^b DEPARTMENT OF PRIMARY INDUSTRIES   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84858771043     PISSN: None     EISSN: None     Source Type: Book    
DOI: None     Document Type: Chapter

References (267)

1. Agritech (2007) Available at: http://www. agritech.org.nz/sheep.shtml
2. Aguiar, M.R. (2005) Biodiversity in grasslands: current changes and future scenarios. In: Reynolds, S.G. and Frame, J. (eds) Grasslands: Developments Opportunities Perspectives, Science Publishers in association with the Food and Agriculture Organisation of the United Nations (FAO), Enfield, New Hampshire, pp. 261-281.
3. Almås, A.R., Bakken, L.R. and Mulder, J. (2004) Changes in tolerance of soil microbial communities in Zn and Cd contaminated soils. Soil Biology and Biochemistry 36, 805-813.
4. Anderson, G. (1980) Assessing organic phosphorus in soils. In: Khasaweh, F., Sample, E. and Kamprath, E.E. (eds) The Role of Phosphorus in Agriculture. ASA, Madison, Wisconsin, pp. 441-431.
5. Anderson, G. (1980) Assessing organic phosphorus in soils. In: Khasaweh, F., Sample, E. and Kamprath, E.E. (eds) The Role of Phosphorus in Agriculture. ASA, Madison, Wisconsin, pp. 441-431.
6. Anderson, G. (1980) Assessing organic phosphorus in soils. In: Khasaweh, F., Sample, E. and Kamprath, E.E. (eds) The Role of Phosphorus in Agriculture. ASA, Madison, Wisconsin, pp. 441-431.
7. Anderson, G. (1980) Assessing organic phosphorus in soils. In: Khasaweh, F., Sample, E. and Kamprath, E.E. (eds) The Role of Phosphorus in Agriculture. ASA, Madison, Wisconsin, pp. 441-431.
8. APVMA (2006) The Reconsideration of Approvals of Selected Sheep Ectoparasiticide Products and Their Associated Labels. Preliminary review findings. Volume 1 of 2. Australian Pesticides and Veterinary Medicines Authority, Canberra.
9. Australian Wool Innovation (2006) Wool facts. Australia's wool industry. Available at: http:// www.woolinnovation.com.au/attachments/ Education/21053_AWI_WoolFacts.pdf
10. Australian Wool Innovation (2007) Wool facts. Australia's wool industry. Available at: http:// www.woolinnovation.com.au/attachments/ Education/21053_AWI_WoolFacts.pdf
11. Ball, P.R. and Keeney, D.R. (1983) Nitrogen losses from urine-affected areas of a New Zealand pasture, under contrasting seasonal conditions. In: Smith, J.A. and Hays, V.W. (eds) Proceedings of the XIV International Grassland Congress, Lexington, Kentucky, 15-24 June, 1981. Westview Press, Boulder, Colorado, pp. 341-344.
12. Ball, P.R. and Keeney, D.R. (1983) Nitrogen losses from urine-affected areas of a New Zealand pasture, under contrasting seasonal conditions. In: Smith, J.A. and Hays, V.W. (eds) Proceedings of the XIV International Grassland Congress, Lexington, Kentucky, 15-24 June, 1981. Westview Press, Boulder, Colorado, pp. 341-344.
13. Bardgett, R.D., Frankland, J.C. and Whittaker, J.B. (1993) The effects of agricultural management on the soil biota of some upland grasslands. Agriculture, Ecosystems and Environment 45, 25-45.
14. Bardgett, R.D., Leemans, D.K., Cook, R. and Hobbs, P.J. (1997) Seasonality of the soil biota of grazed and ungrazed hill grasslands. Soil Biology and Biochemistry 29, 1285-1294.
15. Bardgett, R.D., Jones, A.C., Jones, D.L., Kemmitt, S.J., Cook, R. and Hobbs, P.J. (2001) Soil microbial community patterns related to the history and intensity of grazing in sub-montane ecosystems. Soil Biology and Biochemistry 33, 1653-1664.
16. Bargh, B.J. (1978) Output of water, suspended sediment, and phosphorus and nitrogen forms from a small agricultural catchment. New Zealand Journal of Agricultural Research 21, 29-38.
17. Barrow, N.J. and Lambourne, L.J. (1962) Partition of excreted nitrogen, sulphur, and phosphorus between the faeces and urine of sheep being fed pasture. Australian Journal of Agricultural Research 13, 461-471.
18. Bedard-Haughn, A., Tate, K.W. and van Kessel, C. (2004) Using nitrogen-15 to quantify vegetative buffer effectiveness for sequestering nitrogen in runoff. Journal of Environmental Quality 33, 2252-2262.
19. Beeton, R.J.S., Buckley, K.I., Jones, G.J., Morgan, D., Reichelt, R.E. and Trewin, D. (2006) Australia State of the Environment 2006. Independent report to the Australian Government Minister for the Environment and Heritage. Department of the Environment and Heritage, Canberra.
20. Betteridge, K., Mackay, A.D., Shepherd, T.G., Barker, D.J., Budding, P.J., Devantier, B.P. and Costall, D.A. (1999) Effect of cattle and sheep treading on surface configuration of a sedimentary hill soil. Australian Journal of Soil Research 37, 743-760.
21. Black, A.L. (1988) Toxic effects of cadmium in animals and man. In: Simpson, J. and Curnow, W.J. (eds) Cadmium Accumulations in Australian Agriculture, Bureau of Rural Resources, Canberra, ACT, pp. 161-166
22. Black, A.L. (1988) Toxic effects of cadmium in animals and man. In: Simpson, J. and Curnow, W.J. (eds) Cadmium Accumulations in Australian Agriculture, Bureau of Rural Resources, Canberra, ACT, pp. 161-166
23. Borrelli, P. and Cibils, A.F. (2005) Rural depopulation and grassland management in Patagonia. In: Reynolds, S.G. and Frame, J. (eds) Grasslands: Developments Opportunities Perspectives. Science Publishers in association with the Food and Agriculture Organisation of the United Nations (FAO), Enfield, New Hampshire, pp. 461-487.
24. Boul, H.L. (1994) DDT residues in the environment -a review with a New Zealand perspective. New Zealand Journal of Agricultural Research 38, 257-277.
25. Black, A.L. (1988) Toxic effects of cadmium in animals and man. In: Simpson, J. and Curnow, W.J. (eds) Cadmium Accumulations in Australian Agriculture, Bureau of Rural Resources, Canberra, ACT, pp. 161-166
26. Branson, F.A. (1984) Evaluation of impacts of grazing intensity and specialized grazing systems on watershed characteristics and responses. In: Developing Strategies for Rangeland Management. Westview Press, Boulder, Colorado.
27. Braunack, M.V. and Walker, J. (1985) Recovery of some surface soil properties of ecological interest after sheep grazing in a semi-arid woodland. Australian Journal of Ecology 10, 451-460.
28. Bronson, K.F., Sparling, G.P. and Fillery, I.R.P. (1999) Short-term N dynamics following application of N-15-labeled urine to a sandy soil in summer. Soil Biology and Biochemistry 31, 1049-1057.
29. Cameron, K.C., Di, H.J. and Condron, L.M. (2002) Nutrient and pesticide transfer from agricultural soils to water in New Zealand. In: Haygarth, P.M. and Jarvis, S.C. (eds) Agriculture, Hydrology and Water Quality. CAB International, Wallingford, UK, pp. 373-393.
30. Cao, G.M., Tang, Y.H., Mo, W.H., Wang, Y.A., Li, Y.N. and Zhao, X.Q. (2004) Grazing intensity alters soil respiration in an alpine meadow on the Tibetan plateau. Soil Biology and Biochemistry 36, 237-243.
31. Carran, R.A., Ball, P.R., Theobald, P.W. and Collins, M.E.G. (1982) Soil nitrogen balances in urine-affected areas under two moisture regimes in Southland. Zealand Journal of Experimental Agriculture 10, 377-381.
32. Carran, R.A., Theobald, P.W. and Evans, J.P. (1995) Emission of nitrous oxide from some grazed pasture soils in New Zealand. Australian Journal of Soil Research 33, 341-352.
33. Cayley, J.W.D., Kearney, G.A., Saul, G.R. and Lescun, C.L. (1999) The long-term influence of superphosphate and stocking rate on the production of spring-lambing Merino sheep in the high rainfall zone of southern Australia. Australian Journal of Agricultural Research 50, 1179-1190.
34. Chapin III, F.S., Zavaleta, E.S., Eviner, V.T., Naylor, R.L., Vitousek, P.M., Reynolds, H.L., Hooper, D.U., Lavorel, S., Sala, O.E. and Hobbie, S.E. (2000) Consequences of changing biodiversity. Nature 405, 234-242.
35. Chittleborough, D.J., Smettem, K.R.J., Cotsaris, E. and Leaney, F.W. (1992) Seasonal changes in pathways of dissolved organic carbon through a hillslope soil (Xeralf) with contrasting texture. Australian Journal of Soil Research 30, 465-476.
36. Clark, C.M., Cleland, E.E., Collins, S.L., Fargione, J.E., Gough, L., Gross, K.L., Pennings, S.C., Suding, K.N. and Grace, J.B. (2007) Environmental and plant community determinants of species loss following nitrogen enrichment. Ecology Letters 10, 1-12.
37. Clark, H., de Klein, C. and Newton, P. (2001) Potential Management Practices and Technologies to Reduce Nitrous Oxide, Methane and Carbon Dioxide Emissions from New Zealand Agriculture. Prepared for the Ministry of Agriculture and Forestry. September 2001. Climo, W.J. and Richardson, M.A. (1984) Factors affecting the susceptibility of 3 soils in the Manawatu to stock treading. New Zealand Journal of Agricultural Science 27, 247-253.
38. Cole, C.V., Duxbury, J., Freney, J., Heinemeyer, O., Minami, K., Mosier, A., Paustian, K., Rosenberg, N., Sampson, N., Sauerbeck, D. and Zhao, Q. (1997) Global estimates of potential mitigation of greenhouse gas emissions by agriculture. Nutrient Cycling in Agroecosystems 49, 221-228.
39. Condron, L.M. and Goh, K.M. (1989) Effects of long-term phosphatic fertilizer applications on amounts and forms of phosphorus in soils under irrigated pasture in New Zealand. Journal of Soil Science 40, 383-395.
40. Condron, L.M., Cameron, K.C., Di, H.J., Clough, T.J., Forbes, E.A., McLaren, R.G. and Silva, R.G. (2000) A comparison of soil and environmental quality under organic and conventional farming systems in New Zealand. New Zealand Journal of Agricultural Research 43, 443-466.
41. Condron, L.M., Sinaj, S., McDowell, R.W., Dudler-Guela, J., Scott, J.T. and Metherell, A.K. (2006) Influence of long-term irrigation on the distribution and availability of soil phosphorus under permanent pasture. Australian Journal of Soil Research 44, 127-133.
42. Connolly, R.D., Freebairn, D.M. and Bell, M.J. (1998) Change in soil infiltration associ ated with leys in south-eastern Queensland. Australian Journal of Soil Research 36, 1057-1072.
43. Costin, A.B. (1980) Runoff and soil and nutrient losses from an improved pasture at Ginninderra, Southern Tablelands, New South Wales. Australian Journal of Agricultural Research 31, 533-546.
44. Cottle, D.J. (1991) The sheep industry. In: Cottle, D.J. (ed.) Australian Sheep and Wool Handbook. Inkata Press, Melbourne, Australia, pp. 3-18.
45. Cox, J.W., Varcoe, J., Chittleborough, D.J. and van Leeuwen, J. (2005) Using gypsum to reduce phosphorus in runoff from subcatchments in South Australia. Journal of Environmental Quality 34, 2118-2128.
46. Cuttle, S.P., Hallard, M., Daniel, G. and Scurlock, R.V. (1992) Nitrate leaching from sheepgrazed grass/clover and fertilised grass pastures. Journal of Agricultural Science 119, 335-343.
47. D'Antonio, C.M. and Vitousek, P.M. (1992) Biological invasions by exotic grasses, the grass/fire cycle, and global change. Annual Review of Ecology and Systematics 23, 63-87.
48. Dasgupta, P. (2007) Nature and the economy. Journal of Applied Ecology 44, 475-487. Dawe, S. (1991) Intensive systems. In: Cottle, D.J. (ed.) Australian Sheep and Wool Handbook. Inkata Press, Melbourne, Australia, pp. 380-401.
49. Decau, M.L., Simon, J.C. and Jacquet, A. (2004) Nitrate leaching under grassland as affected by mineral nitrogen fertilization and cattle urine. Journal of Environmental Quality 33, 637-644.
50. defra (2004) Review of key issues related to economic instruments to reduce the environmental impact of pesticide use. Risk and Policy Analysts for the Department for the Environment, Food and Rural Affairs. Available at: http://www.defra.gov. uk/environment/chemicals/pesticides
51. Decau, M.L., Simon, J.C. and Jacquet, A. (2004) Nitrate leaching under grassland as affected by mineral nitrogen fertilization and cattle urine. Journal of Environmental Quality 33, 637-644.
52. Decau, M.L., Simon, J.C. and Jacquet, A. (2004) Nitrate leaching under grassland as affected by mineral nitrogen fertilization and cattle urine. Journal of Environmental Quality 33, 637-644.
53. de Klein, C.A.M., Sherlock, R.R., Cameron, K.C. and van der Weerden, T.J. (2001) Nitrous oxide emissions from agricultural soils in New Zealand -a review of current knowledge and directions for future research. Journal of the Royal Society of New Zealand 31, 543-574.
54. Dewar, D., Palmer, G.T., Northcott, G.L. and Wilkins, A. (2004) The fate and extent of contaminants from historical sheep dip sites. Supersoil 2004: Program and Abstracts for the 3rd Australian New Zealand Soils Conference. Available at: www.regional.org. au/au/asssi/
55. Di, H.J. and Cameron, K.C. (2002) Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies. Nutrient Cycling in Agroecosystems 64, 237-256.
56. Di, H.J. and Cameron, K.C. (2002) Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies. Nutrient Cycling in Agroecosystems 64, 237-256.
57. Doak, B.W. (1952) Some chemical changes in the nitrogenous constituents of urine when voided on pasture. Journal of Agricultural Science 42, 162-171.
58. Dorioz, J.M., Wang, D., Poulenard, J. and Trévisan, D. (2006) The effect of grass buffer strips on phosphorus dynamics -A critical review and synthesis as a basis for application in agricultural landscapes in France. Agriculture, Ecosystems and Environment 117, 4-21.
59. Di, H.J. and Cameron, K.C. (2002) Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies. Nutrient Cycling in Agroecosystems 64, 237-256.
60. Dougherty, W.J., Fleming, N.K., Cox, J.W. and Chittleborough, D.J. (2004) Phosphorus transfer in surface runoff from intensive pasture systems at various scales: a review. Journal of Environmental Quality 33, 1973-1988.
61. Drewry, J.J. (2006) Natural recovery of soil physical properties from treading damage of pastoral. Agriculture Ecosystems and Environment 114, 159-169.
62. Drewry, J.J., Littlejohn, R.P. and Paton, R.J. (2000) A survey of physical properties on sheep and dairy farms in southern New Zealand. New Zealand Journal of Agricultural Research 43, 251-258.
63. Duckworth, J.C., Bunce, R.G.H. and Malloch, A.J.C. (2000) Vegetation gradients in Atlantic Europe: the use of existing phytosociological data in preliminary investigations on the potential effects of climate change on British vegetation. Global Ecology and Biogeography 9, 187-199.
64. Edmond, D.B. (1964) Some effects of sheep treading on ten pasture species. New Zealand Journal of Agricultural Research 7, 1-16.
65. Eldridge, D.J. (1998) Trampling of microphytic crusts on calcareous soils, and its impact on erosion under rain-impacted flow. Catena 33, 221-239.
66. Elliot, A.H. and Carlson, W.T. (2004) Effects of sheep grazing episodes on sediment and nutrient loss in overland flow. Australian Journal of Soil Research 42, 213-220.
67. Elliot, A.H., Tian, Y.Q., Rutherford, J.C. and Carlson, W.T. (2002) Effect of cattle treading on interrill erosion from hill pasture: modelling concepts and analysis of rainfall simulator data. Australian Journal of Soil Research 40, 963-976.
68. Environment ACT (2007) Contaminated sites. Towards a solution. Available at: http://www. environment.act.gov.au/businessandindustry/ contaminatedsites
69. Erickson, C.L. (2006) Intensification, political economy, and the farming community: in defense of a bottom-up perspective of the past. In: Marcus, J. and Stanish, C. (eds) Agricultural Strategies, Cotsen Institute of Archaelogy, University of California, Los Angeles, California, pp. 334-363.
70. Evans, D.M., Redpath, S.M., Elston, D.A., Evans, S.A., Mitchell, R.J. and Dennis, P. (2006) To graze or not to graze? Sheep, voles, forestry and nature conservation in the British Uplands. Journal of Applied Ecology 43, 499-505.
71. FAO (2007) The global livestock production and health atlas. Animal production and health division. Available at: http://www.fao.org/ ag/aga/glipha/index.jsp
72. Floate, M.J.S. (1970a) Mineralization of nitrogen and phosphorus from organic materials of plant and animal origin and its significance in the nutrient cycle in grazed upland and hill soils. Journal of the British Grassland Society 25, 295-302.
73. Floate, M.J.S. (1970b) Decomposition of organic materials from hill soils and pastures II. Comparative studies on the mineralisation of carbon, nitrogen and phosphorus from plant materials and sheep faeces. Soil Biology and Biochemistry 2, 173-185.
74. Forster, P., Ramaswamy, V., Artaxo, P., Berntsen, T., Betts, R., Fahey, D.W., Haywood, J., Lean, J., Lowe, D.C., Myhre, G., Nganga, J., Prinn, R., Raga, G., Schulz, M. and Van Dorland, R. (2007) Changes in atmospheric constituents and in radiative forcing. In: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K.B., Tignor, M. and Miller, H.L. (eds) Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge/New York.
75. Fraser, P.M. and Piercy, J.E. (1996) Effects of Summer Irrigation on the Seasonal Activity, Population Size, Composition and Biomass of Lumbricid Earthworms in a Long-Term Irrigation Trial at Winchmore, New Zealand. ASSSI and NZSSS National Soils Conference, July 1996. pp 89-90.
76. Frossard, E., Condron, L.M., Oberson, A., Sinaj, S. and Fardeau, J.C. (2000) Processes governing phosphorus availability in temperate soils. Journal of Environmental Quality 29, 15-23.
77. Gburek, W.J., Drungil, C.C., Srinivasan, M.S., Needelman, B.A. and Woodward, D.E. (2002) Variable-source-area controls on phosphorus transport: bridging the gap between research and design. Journal of Soil and Water Conservation 57, 534-543.
78. Gillingham, A.G. and During, C. (1973) Pasture production and transfer of fertility within a long-established hill pasture. New Zealand Journal of Experimental Agriculture 1, 227-232.
79. Gillingham, A.G., Syers, J.K. and Gregg, P.E.H. (1984) Nutrient cycling and management in grazed pastures. New Zealand Agricultural Science 18, 115-119.
80. Greene, R.S.B., Kinnell, P.I.A. and Wood, J.T. (1994) Role of plant cover and stock trampling on runoff and soil erosion from semiarid wooded rangelands. Australian Journal of Soil Research 32, 953-973.
81. Greenwood, K.L. and McKenzie, B.M. (2001) Grazing effects on soil physical properties and the consequences for pastures: a review. Australian Journal of Experimental Agriculture 41, 1231-1250.
82. Greenwood, P.B. and McNamara, R.M. (1992) An analysis of the physical condition of two intensively grazed Southland soils. Proceedings of the New Zealand Grassland Association 54, 71-75.
83. Griffith, D.W.T., Leuning, R., Denmead, O.T. and Jamie, I.M. (2002) Air-land exchanges of CO2, CH4 and N2O measured by FTIR spectrometry and micrometeorological techniques. Atmospheric Environment 36, 1833-1842.
84. Griffith, D.W.T., Leuning, R., Denmead, O.T. and Jamie, I.M. (2002) Air-land exchanges of CO2, CH4 and N2O measured by FTIR spectrometry and micrometeorological techniques. Atmospheric Environment 36, 1833-1842.
85. Guo, L.B. and Gifford, R.M. (2002) Soil carbon stocks and land use change: a meta analysis. Global Change Biology 8, 345-360.
86. Hairsine, P.B., Moran, C.J. and Rose, C.W. (1992) Recent developments regarding the influence of soil surface characteristics on overland flow and erosion. Australian Journal of Soil Research 30, 249-264.
87. Ham, J.M. and DeSutter, T.M. (2000) Toward site-specific design standards for animalwaste lagoons: protecting ground water quality. Journal of Environmental Quality 29, 1721-1732.
88. Ham, J.M. and DeSutter, T.M. (2000) Toward site-specific design standards for animalwaste lagoons: protecting ground water quality. Journal of Environmental Quality 29, 1721-1732.
89. Harrod, T.R. and Theurer, F.D. (2002) Sediment. In: Haygarth, P.M. and Jarvis, S.C. (eds) Agriculture, Hydrology and Water Quality. CAB International, Wallingford, UK, pp. 155-170.
90. Ham, J.M. and DeSutter, T.M. (2000) Toward site-specific design standards for animalwaste lagoons: protecting ground water quality. Journal of Environmental Quality 29, 1721-1732.
91. Ham, J.M. and DeSutter, T.M. (2000) Toward site-specific design standards for animalwaste lagoons: protecting ground water quality. Journal of Environmental Quality 29, 1721-1732.
92. Hatch, D., Goulding, K. and Murphy, D. (2002) Nitrogen. In: Haygarth, P.M. and Jarvis, S.C. (eds) Agriculture, Hydrology and Water Quality. CAB International, Wallingford, UK, pp. 7-27.
93. Haygarth, P.M. and Jarvis, S.C. (1999) Transfer of phosphorus from agricultural soils. Advances in Agronomy 66, 195-249.
94. Haygarth, P.M., Chapman, P.J., Jarvis, S.C. and Smith, R.V. (1998a) Phosphorus budgets for two contrasting grassland farming systems in the UK. Soil Use and Management 14, 160-167.
95. Haygarth, P.M., Hepworth, L. and Jarvis, S.C. (1998b) Forms of phosphorus transfer in hydrological pathways from soil under grazed grassland. European Journal of Soil Science 49, 65-72.
96. Haynes, R.J. and Williams, P.H. (1993) Nutrient cycling and soil fertility in the grazed pasture ecosystem. Advances in Agronomy 49, 119-199.
97. He, Z.L., Wilson, M.J., Campbell, C.O., Edwards, A.C. and Chapman, S.J. (1995) Distribution of phosphorus in soil aggregate fractions and its significance with regard to phosphorus transport in agricultural runoff. Water Air and Soil Pollution 83, 69-84.
98. Heathwaite, A.L., Quinn, P.F. and Hewett, C.J.M. (2005) Modelling and managing critical source areas of diffuse pollution from agricultural land using flow connectivity simulation. Journal of Hydrology 304, 446-461.
99. Ham, J.M. and DeSutter, T.M. (2000) Toward site-specific design standards for animalwaste lagoons: protecting ground water quality. Journal of Environmental Quality 29, 1721-1732.
100. Hicks, D.M. and Griffiths, G.A. (1992) Sediment load. In: Mosley, P.A. (ed.) Waters of New Zealand, New Zealand Hydrological Society, Wellington, pp. 229-248.
101. Hodgson, J., Cameron, K., Clark, D., Condron, L., Fraser, T., Hedley, M., Holmes, C., Kemp, P., Lucas, R., Moot, D., Morris, S., Nicholas, P., Shadbolt, N., Sheath, G., Valentine, I., Waghorn, G. and Woodfield, D. (2005) New Zealand's pastoral industries: efficient use of grassland resources. In: Reynolds, S.G. and Frame, J. (eds) Grasslands: Developments Opportunities Perspectives, Science Publishers in association with the Food and Agriculture Organisation of the United Nations (FAO), Enfield, New Hampshire, pp. 181-205.
102. Hoglund, J.H. (1985) Grazing intensity and soil nitrogen accumulation. Proceedings of the New Zealand Grassland Association 46, 65-69.
103. Hooda, P.S., Edwards, A.C., Anderson, H.A. and Miller, A. (2000) A review of water quality concerns in livestock farming areas. Science of the Total Environment 250, 143-167.
104. Hughes, K.J., Magette, W.L. and Kurz, I. (2005) Identifying critical source areas for phosphorus loss in Ireland using field and catchment scale ranking schemes. Journal of Hydrology 304, 430-445.
105. Jackson, L.E., Pascual, U. and Hodgkin, T. (2007) Utilizing and conserving agrobiodiversity in agricultural landscapes. Agriculture Ecosystems and Environment 121, 196-210.
106. Jarvis, S.C., Wilkins, R.J. and Pain, B.F. (1996) Opportunities for reducing the environmental impact of dairy farming managements: a systems approach. Grass and Forage Science 51, 21-31.
107. Johns, D. (2007) Like it or not, politics is the solution. Conservation Biology 21, 287-288.
108. Johnston, A. (1962) Effects of grazing intensity and cover on the water-intake rate of fescue grassland. Journal of Range Management 15, 79-87.
109. Judd, M.J., Kellier, F.M., Ulyatt, M.J., Lassey, K.R., Tate, K.R., Shelton, D., Harvey, M.J. and Walker, C.F. (1999) Net methane emissions from grazing sheep. Global Change Biology 5, 647-657.
110. Karlen, D.L., Mausbach, J.W., Cline, R.G., Harris, R.F. and Schuman, G.E. (1997) Soil quality: a concept, definition, and framework for evaluation (a guest editorial). Soil Science Society of America Journal 61, 4-10.
111. Karlen, D.L., Andrews, S.S. and Doran, J.W. (2001) Soil quality: current concepts and applications. Advances in Agronomy 74, 1-40.
112. Kelliher, F.M., Reisinger, A.R., Martin, R.J., Harvey, M.J., Price, S.J. and Sherlock, R.R. (2002) Measuring nitrous oxide emission rate from grazed pasture using Fouriertransform infrared spectroscopy in the nocturnal boundary layer. Agricultural and Forest Meteorology 111, 29-38.
113. Kelliher, F.M., Dymond, J.R., Arnold, G.C., Clark, H. and Rys, G. (2007) Estimating the uncertainty of methane emissions from New Zealand's ruminant animals. Agricultural and Forest Meteorology 143, 146-150.
114. Kemp, D.R., King, W.M., Gilmour, A.R., Lodge, G.M., Murphy, S.R., Quigley, P.E., Sanford, P. and Andrew, M.H. (2003) SGS biodiversity theme: impact of plant biodiversity on the productivity and stability of grazing systems across southern Australia. Australian Journal of Experimental Agriculture 43, 961-975.
115. King, L.K. and Hutchison, K.J. (1976) The effects of sheep stocking intensity on the abundance and distribution of mesofauna in pastures. Journal of Applied Ecology 13, 41-55.
116. King, L.K., Hutchinson, K.J. and Greenslade, P. (1976) The effects of sheep numbers on associations of Collembola in sown pastures. Journal of Applied Ecology 13, 731-739.
117. King, L.K., Hutchinson, K.J. and Greenslade, P. (1976) The effects of sheep numbers on associations of Collembola in sown pastures. Journal of Applied Ecology 13, 731-739.
118. Körner, C. (2002) Grasslands in a CO2 enriched world. Grassland Science in Europe 7, 611-624.
119. Lakzian, A., Murphy, P., Turner, A., Beynon, J.L. and Giller, K.E. (2002) Rhizobium leguminosarum bv. viciae populations in soils with increasing heavy metal contamination: abundance, plasmid profiles, diversity and metal tolerance. Soil Biology and Biochemistry 34, 519-529.
120. Lambert, M.G., Renton, S.W. and Grant, D.A. (1982) Nitrogen balance studies in some North Island hill pastures. In: Gandar, P.W. (ed.) Nitrogen Balances in New Zealand Ecosystems, Department of Scientific and Industrial Research, Palmerston North, New Zealand, pp. 35-39.
121. Lambert, M.G., Devantier, B.P., Nes, P. and Penny, P.E. (1985) Losses of nitrogen, phosphorus, and sediment in runoff from hill country under different fertiliser and grazing management regimes. New Zealand Journal of Agricultural Research 28, 371-379.
122. Lambert, M.G., Clark, D.A., Mackay, A.D. and Costall, D.A. (2000) Effects of fertiliser application on nutrient status and organic matter content of hill soils. New Zealand Journal of Agricultural Research 43, 127-138.
123. Lang, R.D. and McCaffrey, L.A.H. (1984) Ground cover -its effects on soil loss from grazed runoff plots, Gunnedah. Journal of Soil Conservation, New South Wales 40, 56-61.
124. Lassey, K.R., Ulyatt, M.J., Martin, R.J., Walker, C.F. and Shelton, I.D. (1997) Methane emissions measured directly from grazing livestock in New Zealand. Atmospheric Environment 31, 2905-2914.
125. Ledgard, S.F. (2001) Nitrogen cycling in low input legume-based agriculture, with emphasis on legume/grass pastures. Plant and Soil 228, 43-59.
126. Leinweber, P., Turner, B.L. and Meissner, R. (2002) Phosphorus. In: Haygarth, P.M. and Jarvis, S.C. (eds) Agriculture, Hydrology and Water Quality. CAB International, Wallingford, UK, pp. 29-55.
127. Letey, J., Sojka, R.E., Upchurch, D.R., Cassel, D.K., Olson, K.R., Payne, W.A., Petrie, S.E., Price, G.H., Reginato, R.J., Scott, H.D., Smethurst, P.J. and Triplett, G.B. (2003) Deficiencies in the soil quality concept and its application. Journal of Soil and Water Conservation 58, 180-187. Leytem, A.B., Mikkelsen, R.L. and Gilliam, J.W. (2002) Sorption of organic phosphorus compounds in Atlantic coastal plain soils. Soil Science 167, 652-658.
128. Li, C., Frolking, S. and Frolking, T.A. (1992a) A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity. Journal of Geophysical Research 97, 9759-9776.
129. Li, C., Frolking, S. and Frolking, T.A. (1992b) Amodel of nitrous oxide evolution from soil driven by rainfall events: 2. Model applications. Journal of Geophysical Research 97, 9777-9783.
130. Li, C., Zhuang, Y., Cao, M., Crill, P., Dai, Z., Frolking, S., Moore, B.L., Salas, W., Sonf, W. and Wang, X.C. (2001) Comparing a national inventory of N2O Emissions from arable lands in China developed with a process-based agroecosystem model to the IPCC methodology. Nutrient Cycling in Agricultural Ecosystems 60, 159-175.
131. Li, S.-G., Asanuma, J., Eugster, W., Kotani, A., Liu, J.-J., Urano, T., Oikawa, T., Davaa, G., Oyunbaatar, D. and Sugita, M. (2005) Net ecosystem carbon dioxide exchange over grazed steppe in central Mongolia. Global Change Biology 11, 1941-1955.
132. Lilburne, L., Sparling, G. and Schipper, L. (2004) Soil quality monitoring in New Zealand: development of an interpretative framework. Agriculture Ecosystems and Environment 104, 535-544.
133. Lilley, J.M., Bolger, T.P., Peoples, M.B. and Gifford, R.M. (2001) Nutritive value and the nitrogen dynamics of Trifolium subterraneum and Phalaris aquatica under warmer, high CO2 conditions. New Phytologist 150, 385-395.
134. Lockyer, D.R. (1997) Methane emissions from grazing sheep and calves. Agriculture Ecosystems and Environment 66, 11-18. Loganathan, P., Hedley, M.J., Grace, N.D., Lee, J., Cronin, S.J., Bolan, N.S. and Zanders, J.M. (2003) Fertiliser contaminants in New Zealand grazed pasture with special reference to cadmium and fluorine: a review. Australian Journal of Soil Research 41, 501-532.
135. Lunney, D. (2001) Causes of the extinction of native mammals of the western division of New South Wales: an ecological interpretation of the nineteenth century historical record. Rangeland Journal 23, 44-70.
136. Luo, J., Tillman, R.W. and Ball, P.R. (1999a) Factors regulating denitrification in a soil under pasture. Soil Biology and Biochemistry 31, 913-927.
137. MacKerron, D.K.L., Duncan, J.M., Hillman, J.R., MacKay, G.R., Robinson, D.J., Trudgill, D.L. and Wheatley, R.J. (2007) Organic farming: science and belief. Annual Report 1998-1999.Scottish Crop Research Institute. pp. 60-72. Available at: http://www.scri.sari. ac.uk/publications/annualreports
138. MacLoed, C.J. and Moller, H. (2006) Intensification and diversification of New Zealand agriculture since 1960: an evaluation of current indicators of land use change. Agriculture Ecosystems and Environment 115, 201-218.
139. Magesan, G.N., White, R.E. and Scotter, D.R. (1996) Nitrate leaching from a drained, sheep-grazed pasture. I. Experimental results and environmental implications. Australian Journal of Soil Research 34, 55-67.
140. Mapfumo, E., Naeth, M.A., Baron, V.S., Dick, A.C. and Chanasyk, D.S. (2002) Grazing impacts on litter and roots: perennial versus annual grasses. Journal of Range Management 55, 16-22.
141. Mathews, P.N.P., Hodgson, J. and White, J.G.H. (1999) Livestock farming systems in New Zealand. In: White, J. and Hodgson, J. (eds) New Zealand Pasture and Crop Science. Oxford University Press, Auckland, New Zealand, pp. 133-152.
142. McCallum, M.H., Kirkegaard, J.A., Green, T.W., Cresswell, H.P., Davies, S.L., Angus, J.F. and Peoples, M.B. (2004) Improved subsoil macroporosity following perennial pastures. Australian Journal of Experimental Agriculture 44, 299-307.
143. McCaskill, M.R. and Cayley, J.W.D. (2000) Soil audit of a long-term phosphate experiment in south-western Victoria: total phosphorus, sulfur, nitrogen, and major cations. Australian Journal of Agricultural Research 51, 737-748.
144. McCaskill, M. and Quigley, P. (2006) Fertilising pastures. In: Nie, Z. and Saul, G. (eds) Greener Pastures for South West Victoria, 2nd edn. Victorian Department of Primary Industries, Hamilton, Victoria, Australia, pp. 43-52.
145. McCaskill, M.R., Ridley, A.M., Okom, A., White, R.E., Andrew, M.H., Michalk, D.L., Melland, A., Johnson, W.H. and Murphy, S.R. (2003) SGS nutrient theme: environmental assessment of nutrient application to extensive pastures in the high rainfall zone of southern Australia. Australian Journal of Experimental Agriculture 43, 927-944.
146. McColl, R.H.S. and Gibson, A.R. (1979) Downslope movement of nutrients in hill pasture, Taita, New Zealand. 3. Amounts involved and management implications. New Zealand Journal of Agricultural Research 22, 279-286.
147. McDowell, R.W. (2006) Contaminant losses in overland flow from cattle, deer and sheep dung. Water, Air and Soil Pollution 174, 211-222.
148. McDowell, R.W. and Catto, W. (2005) Alternative fertilisers and management to decrease incidental phosphorus loss. Environmental Chemistry Letters 2, 169-174.
149. McDowell, R.W. and Monaghan, R.M. (2002) The potential for phosphorus loss in relation to nitrogen fertiliser application and cultivation. New Zealand Journal of Agricultural Research 45, 245-253.
150. McDowell, R.W. and Stewart, I. (2006) The phosphorus composition of contrasting soils in pastoral, native and forest management in Otago, New Zealand: sequential extraction and 31P NMR. Geoderma 130, 176-189.
151. McDowell, R.W., Monaghan, R.M. and Carey, P.L. (2003) Potential phosphorus losses in overland flow from pastoral soils receiving longterm applications of either superphosphate or reactive phosphate rock. New Zealand Journal of Agricultural Research 46, 329-337.
152. McDowell, R.W., Drewry, J.J. and Paton, R.J. (2004) Effects of deer grazing and fence-line pacing on water and soil quality. Soil Use and Management 20, 302-307.
153. McDowell, R.W., Monaghan, R.M. and Wheeler, D. (2005) Modelling phosphorus losses from pastoral farming systems in New Zealand. New Zealand Journal of Agricultural Research 48, 131-141.
154. McDowell, R.W., Scott, J.T. and Condron, L.M. (2006) Influence of aggregate size on phosphorus loss and ryegrass yield in a soil cultivated intermittently. Soil Use and Management 22, 224-226.
155. McDowell, R.W., Nash, D.M. and Robertson, F. (2007) Sources of phosphorus lost from a grazed pasture receiving simulated rainfall. Journal of Environmental Quality 36, 1281-1288.
156. McIntosh, P.D., Gibson, R.S., Saggar, S., Yeates, G.W. and McGimpsey, P. (1999) Effect of contrasting farm management on vegetation and biochemical, chemical, and biological condition of moist steepland soils of the South Island high country, New Zealand. Australian Journal of Soil Research 37, 847-865.
157. McKellar, Q.A. (1997) Ecotoxicology and residues of anthelmintic compounds. Veterinary Parasitology 72, 413-435.
158. McKellar, Q.A. (2006) The health of the sheep industry and the medicines to maintain it. Small Ruminant Research 62, 7-12.
159. McTaggart, I.P., Douglas, J.T., Clayton, H., Smith, K.A., Jarvis, S.C. and Pain, B.F. (1997) Nitrous oxide emissions from slurry and mineral nitrogen fertilizer applied to grassland. In: Jarvis, S.C. and Pain, B.F. (eds) Gaseous Nitrogen Emissions from Grasslands. CAB International, Wallingford, UK, pp. 201-209.
160. Melland, A.R. (2003) Pathways and processes of phosphorus loss from pastures grazed by sheep. PhD thesis, The University of Melbourne, Australia.
161. Metherell, A.K. (2003) Management effects on soil carbon storage in New Zealand pastures. Proceedings of the New Zealand Grasslands Association Conference 65, 259-264.
162. Metherell, A.K., Late Stewart, D.P.C., Carey, P.L. and Moss, R.A. (2002) Long-term irrigation improves soil quality, but decreases soil carbon sequestration. Soil Quality and Sustainable Land Management Conference (3-5 April 2002), Massey University, New Zealand, pp. 55-61.
163. Milne, J. (1997) Grassland management and biodiversity. In: Sheldrick, R.D. (ed.) Grassland Management in the Environmentally Sensitive Areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK, pp. 25-32.
164. Milne, J. (1997) Grassland management and biodiversity. In: Sheldrick, R.D. (ed.) Grassland Management in the Environmentally Sensitive Areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK, pp. 25-32.
165. Milne, J. (1997) Grassland management and biodiversity. In: Sheldrick, R.D. (ed.) Grassland Management in the Environmentally Sensitive Areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK, pp. 25-32.
166. Milne, J. (1997) Grassland management and biodiversity. In: Sheldrick, R.D. (ed.) Grassland Management in the Environmentally Sensitive Areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK, pp. 25-32.
167. Morris, M.G. (1990a) The effects of management on the invertebrate community of calcareous grassland. In: Hillier, S.H., Walton, D.W.H. and Wells, D.A. (eds) Calcarious Grasslands -Ecology and Management. Bluntisham Books, Blunisham, UK, pp. 128-133.
168. Morris, M.G. (1990b) The Hemiptera of two sown calcareous grasslands. III Comparisons with the Auchenorhyncha faunas of other grasslands. Journal of Applied Ecology 27, 394-409.
169. Milne, J. (1997) Grassland management and biodiversity. In: Sheldrick, R.D. (ed.) Grassland Management in the Environmentally Sensitive Areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK, pp. 25-32.
170. Murphy, S.R., Lodge, G.M. and Harden, S. (2004) Surface soil water dynamics in pastures in northern New South Wales. 2. Surface runoff. Australian Journal of Experimental Agriculture 44, 283-298.
171. Murray, P.J., Gill, E., Balsdon, S.L. and Jarvis, S.C. (2001) A comparison of methane emissions from sheep grazing pastures with differing management intensities. Nutrient Cycling in Agroecosystems 60, 93-97.
172. Murray, R.I. and Yule, I.J. (2007a) Developing variable rate application technology: scenario development and agronomic evaluation. New Zealand Journal of Agricultural Research 50, 53-63.
173. Murray, R.I. and Yule, I.J. (2007b) Developing variable rate application technology: economic impact for farm owners and topdressing operators. New Zealand Journal of Agricultural Research 50, 65-72.
174. Murray, R.I., Yule, I.J. and Gillingham, A.G. (2007) Developing variable rate application technology: modelling annual pasture production on hill country. New Zealand Journal of Agricultural Research 50, 41-52.
175. Naeth, M.A., Bailey, A.W., Pluth, D.J., Chanasyk, D.S. and Hardin, R.T. (1991) Grazing impacts on litter and soil organic matter in mixed prairie and fescue grassland ecosystems in Alberta. Journal of Range Management 44, 7-12.
176. Nash, D. and Murdoch, C. (1997) Phosphorus in runoff from a fertile dairy pasture. Australian Journal of Soil Research 35, 419-429.
177. Nash, D., Clemow, L., Hannah, M., Barlow, K. and Gangaiya, P. (2005) Modelling phosphorus exports from rain-fed and irrigated pastures in southern Australia. Australian Journal of Soil Research 43, 745-755.
178. Nelson, P.N., Cotsaris, E. and Oades, J.M. (1996) Nitrogen, phosphorus, and organic carbon in streams draining two grazed catchments. Journal of Environmental Quality 25, 1221-1229.
179. Newman, R.H. and Tate, K.R. (1980) Soil phosphorus characterisation by 31P nuclear magnetic resonance. Communications in Soil Science and Plant Analysis 11, 835-842.
180. Nguyen, M.L. and Goh, K.M. (1990) Accumulation of soil sulphur fractions in grazed pastures receiving long-term superphosphate applications. New Zealand Journal of Agricultural Research 33, 111-128.
181. Oliva, G., Cibils, A., Borrelli, P. and Humano, G. (1998) Stable states in relation to grazing in Patagonia: a 10 year experimental trial. Journal of Arid Environments 40, 113-131.
182. Oliva, G., Collantes, M. and Humano, G. (2005) Demography of grazed tussock grass populations in Patagonia. Rangeland Ecology and Management 58, 466-473.
183. Parfitt, R.L., Yeates, G.W., Ross, D.J., MacKay, A.D. and Budding, P.J. (2005) Relationships between soil biota, nitrogen and phosphorus availability, and pasture growth under organic and conventional management. Applied Soil Ecology 28, 1-13.
184. Parfitt, R.L., Schipper, L.A., Baisden, W.T. and Elliot, A.H. (2006) Nitrogen inputs and outputs for New Zealand in 2001 at national and regional scales. Biogeochemistry 80, 71-88.
185. Parfitt, R.L., Mackay, A.D., Yeates, G.W. and Ross, D.J. (2007) Movement of N, P, and C from soils to waters in hill country pastures. In: Currie, L.D. and Yates, L.J. (eds) Designing Sustainable Farms: Critical Aspects of Soil and Water Management. Occasional report No. 20. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand, pp.177-184.
186. Pelchen, A. and Peters, K.J. (1998) Methane emissions from sheep. Small Ruminant Research 27, 137-150.
187. Polley, H.W., Mayeux, H.S., Johnson, H.B. and Tischler, C.R. (1997) Viewpoint: atmospheric CO2, soil water and shrub/grass ratios on rangelands. Journal of Range Management 50, 278-284.
188. Polley, H.W., Mayeux, H.S., Johnson, H.B. and Tischler, C.R. (1997) Viewpoint: atmospheric CO2, soil water and shrub/grass ratios on rangelands. Journal of Range Management 50, 278-284.
189. Pratley, J.E. and Godyn, D.L. (1991) Pasture management. In: Cottle, D.J. (ed.) Australian Sheep and Wool Handbook. Inkata Press, Melbourne, Australia, pp. 267-285.
190. Proffitt, A.P.B., Bendotti, S., Howell, M.R. and Eastham, J. (1993) The effect of sheep trampling and grazing on soil physical properties and pasture growth for a red-brown earth. Australian Journal of Agricultural Research 44, 317-331.
191. Quinn, H., Fitzpatrick, L., Whatley, J. and Fry, P. (2005) Farm Monitor Project. Summary of results 2004-2005. Department of Primary Industries, Melbourne, Australia.
192. Rauzi, F. and Hanson, C.L. (1966) Water intake and runoff as affected by intensity of grazing. Journal of Range Management 19, 351-356. Redman, C. (1999) Human Impact on Ancient Environments. University of Arizona Press, Tucson, Arizona.
193. Ridley, A.M., White, R.E., Helyar, K.R., Morrison, G.R., Heng, L.K. and Fisher, R. (2001) Nitrate leaching loss under annual and perennial pastures with and without lime on a duplex (texture contrast) soil in humid southeastern Australia. European Journal of Soil Science 52, 237-252.
194. Ridley, A.M., Christy, B.P., White, R.E., McLean, T. and Green, R. (2003) North-east Victoria SGS national experiment site: water and nutrient losses from grazing systems on contrasting soil types and levels of inputs. Australian Journal of Experimental Agriculture 43, 799-815.
195. Ritz, K., McHugh, M. and Harris, J. (2003) Biological diversity and function in soils: contemporary perspectives and implications in relation to the formulation of effective indicators. In: Francaviglia, R. (ed.) Proceedings of OECD Expert Meeting on Soil Erosion and Soil Biodiversity Indicators -Rome March 2003. MIPAF-MINAMB. Available at: http://www. oecd.org/agr/env/indicators.htm
196. Robertson, F.A. and Nash, D.M. (2008) Phosphorus and nitrogen in soils, plants, and overland flow from sheep-grazed pastures fertilised with different rates of superphosphate. Agriculture, Ecosystems and Environment 126, 195-208.
197. Rosen, M.R., Reeves, R.R., Green, S., Clothier, B. and Ironside, N. (2004) Prediction of groundwater nitrate contamination after closure of an unlined sheep feedlot. Vadose Zone Journal 3, 990-1006.
198. Russell, J.S. (1960) Soil fertility changes in the long-term experimental plots at Kybybolite, South Australia. I. Changes in pH, total nitrogen, organic carbon, and bulk density. Australian Journal of Agricultural Research 11, 902-926.
199. Ruz-Jerez, B.E., White, R.E. and Ball, P.R. (1995) A comparison of nitrate leaching under clover-based pastures and nitrogen-fertilized grass grazed by sheep. Journal of Agricultural Science 125, 361-369.
200. Saggar, S., Giltrap, D.L., Li, C. and Tate, K.R. (2007) Modelling nitrous oxide emissions from grazed grasslands in New Zealand. Agriculture Ecosystems and Environment 119, 205-216.
201. Sakadevan, K., MacKay, A.D. and Hedley, M.J. (1993) Influence of sheep excreta on pasture uptake and leaching losses of sulfur, nitrogen and potassium from grazed pastures. Australian Journal of Soil Research 31, 151-162.
202. Sankaran, M. and Augustine, D.J. (2004) Large herbivores suppress decomposer abundance in a semiarid grazing ecosystem. Ecology 85, 1052-1061.
203. Sargeant, K. (2003) Effect of grazing management and fertiliser regime on the spatial distribution of available phosphorus, nitrogen and potassium in soil. Honours thesis, La Trobe University, Melbourne, Australia. Sarmah, A.K., Muller, K. and Ahmad, R. (2004) Fate and behaviour of pesticides in the agroecosystem -a review with a New Zealand perspective. Australian Journal of Soil Research 42, 125-154.
204. Sarmah, A.K., Meyer, M.T. and Boxall, A.B.A. (2006) A global perspective on the use, sales, exposure pathways, occurrence, fate and effects of veterinary antibiotics (VAs) in the environment. Chemosphere 65, 725-179.
205. Sauerbeck, D. (1992) Conditions controlling the bioavailability of trace elements and heavy metals derived from phosphate fertilizers in soils. Proceedings of the 4th International Imphos Conference on Phosphorus, Life and Environment, Casablanca, 1992. pp 419-448.
206. Saul, G. (2006) Grazing pastures. In: Nie, Z. and Saul, G. (eds) Greener Pastures for South West Victoria, 2nd edn. Victorian Department of Primary Industries, Hamilton, Victoria, Australia, pp. 53-60.
207. Schipper, L.A., Baisden, W.T., Parfitt, R.L., Ross, C. and Claydon, J.J. (2007) Large losses of soil C and N from soil profiles under pasture in New Zealand during the past 20 years. Global Change Biology 13, 1138-1144.
208. Scholes, R.J. and Archer, S.R. (1997) Tree-grass interactions in savannas. Annual Review of Ecology and Systematics 28, 517-544.
209. Schuman, G.E., Janzen, H.H. and Herrick, J.E. (2002) Soil carbon dynamics and potential carbon sequestration by rangelands. Environmental Pollution 116, 391-396.
210. Scott, J.T., Condron, L.M., McDowell, R.W. (2005) Soil aggregate dynamics, particulate organic matter and phosphate under dryland and irrigated pasture. In: Jarvis, S.C., Murray, P.J. and Roker, J.A. (eds) Optimisation of Nutrient Cycling and Soil Quality for Sustainable Grasslands. Proceedings of a satellite workshop of the XXth International Grasslands Congress, July 2005, Oxford. p. 102.
211. Sears, P.D. (1950) Soil fertility and pasture growth. Grass and Forage Science 5, 267-280. Sharpley, A.N. and Syers, J.K. (1976) Phosphorus transport in surface runoff as influenced by fertiliser and grazing cattle. New Zealand Journal of Science 19, 277-282.
212. Sharpley, A.N. and Syers, J.K. (1979) Effect of aerial topdressing with superphosphate on the loss of phosphate from a pasture catchment. New Zealand Journal of Agricultural Research 22, 273-277.
213. Sharpley, A.N., Gburek, W.J., Folmar, G. and Pionke, H.B. (1999) Sources of phosphorus exported from an agricultural watershed in Pennsylvania. Agricultural Water Management 41, 77-89.
214. Sheldrick, R.D. (1997) Grassland management in the environmentally sensitive areas. Proceedings of the British Grassland Society Conference, University of Lancaster, 23-25 September 1997. British Grassland Society, Arrowhead Books, Reading, UK.
215. Sherlock, R.R. and Goh, K.M. (1984) Dynamics of ammonia volatilization from simulated urine patches and aqueous urea applied to pasture. I. Field experiments. Fertilizer Research 5, 181-195.
216. Silva, R.G., Cameron, K.C., Di, H.J. and Hendry, T. (1999) A lysimeter study of the impact of cow urine, dairy shed effluent, and nitrogen fertiliser on nitrate leaching. Australian Journal of Soil Research 37, 357-369.
217. Six, J., Guggenberger, G., Paustian, K., Haumaier, L., Elliott, E.T. and Zech, W. (2001) Sources and composition of soil organic matter fractions between and within soil aggregates. European Journal of Soil Science 52, 607-618.
218. Six, J., Conant, R.T., Paul, E.A. and Paustian, K. (2002) Stabilization mechanisms of soil organic matter: implications for C-saturation of soils. Plant and Soil 241, 155-176.
219. Smith, C.M. (1987) Sediment, phosphorus, and nitrogen in channelised surface runoff from a New Zealand pastoral catchment. New Zealand Journal of Marine and Freshwater Research 21, 627-639.
220. Smith, S.D., Huxman, T.E., Zitzer, S.F., Charlet, T.N., Housman, D.C., Coleman, J.S., Fenstermaker, L.K., Seeman, J.R. and Nowak, R.S. (2000) Elevated CO2 increases productivity and invasive species success in an arid ecosystem. Nature 408, 79-82.
221. Smoliak, S., Dormaar, J.F. and Johnston, A. (1972) Long-term grazing effects on Stipa-Bouteloua prairie soils. Journal of Range Management 25, 246-250.
222. Soane, B.D. (1970) The effects of traffic and implements on soil compaction. Journal and Proceedings of the Institution of Agricultural Engineers 25, 115-126.
223. Sparling, G.P. and Schipper, L.A. (2002) Soil quality at a national scale in New Zealand. Journal of Environmental Quality 31, 1848-1857.
224. Sparling, G. and Schipper, L. (2004) Soil quality monitoring in New Zealand: trends and issues arising from a broad-scale survey. Agriculture, Ecosystems and Environment 104, 545-552.
225. Sparling, G.P., Schipper, L.A., Bettjeman, W. and Hill, R. (2004) Soil quality monitoring in New Zealand: practical lessons from a 6 year trial. Agriculture, Ecosystems and Environment 104, 523-534.
226. Sparling, G.P., Schipper, L.A., Bettjeman, W. and Hill, R. (2004) Soil quality monitoring in New Zealand: practical lessons from a 6 year trial. Agriculture, Ecosystems and Environment 104, 523-534.
227. Squires, V.R. (1991) Extensive grazing systems. In: Cottle, D.J. (ed.) Australian Sheep and Wool Handbook. Inkata Press, Melbourne, Australia, pp. 369-379.
228. Srinivasan, M.S. and McDowell, R.W. (2007) Hydrological approaches to the delineation of critical-source areas of runoff. New Zealand Journal of Agricultural Research 50, 249-265.
229. Stevens, D.P., Cox, J.W. and Chittleborough, D.J. (1999) Pathways of phosphorus, nitrogen, and carbon movement over and through texturally differentiated soils, South Australia. Australian Journal of Soil Research 37, 679-693.
230. Stewart, D.P.C. and Metherell, A.K. (1999a) Carbon (13C) uptake and allocation in pasture plants following field pulse labelling. Plant and Soil 210, 61-73.
231. Stewart, D.P.C. and Metherell, A.K. (1999b) Long-term influence of management practices on the soil carbon of pastoral ecosystems. In: Currie, L.D., Hedley, M.J., Horne, D.J. and Loganathan, P. (eds) Best Soil Management Practices for Production, Occasional Report No. 12, Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand pp. 317-326.
232. Stewart, J.W.B. and Tiessen, H. (1987) Dynamics of soil organic phosphorus. Biogeochemistry 4, 41-60.
233. Tate, K.R., Parshotam, A. and Ross, D.J. (1995) Soil carbon storage and turnover in temperate forests and grasslands-a New Zealand perspective. Journal of Biogeography 22, 695-700.
234. Tate, K.R., Parshotam, A. and Ross, D.J. (1995) Soil carbon storage and turnover in temperate forests and grasslands-a New Zealand perspective. Journal of Biogeography 22, 695-700.
235. Teyssonneyre, F., Picon-Cochard, C., Falcimagne, R. and Soussana, J.F. (2002) Effects of elevated CO2 and cutting frequency on plant community structure in a temperate grassland. Global Change Biology 8, 1034-1046. Thompson, R.B. and Fillery, I.R.P. (1997) Transformation in soil and turnover to wheat of nitrogen from components of grazed pasture in the south of Western Australia. Australian Journal of Agricultural Research 48, 1033-1047.
236. Thompson, R.B. and Fillery, I.R.P. (1998) Fate of urea nitrogen in sheep urine applied to soil at different times of the year in the pasture-wheat rotation in south Western Australia. Australian Journal of Agricultural Research 49, 495-510.
237. Thomsen, I.K., Schjønning, P. and Chirstensen, B.T. (2003) Mineralisation of N-15-labelled sheep manure in soils of different texture and water contents. Biology and Fertility of Soils 37, 295-301.
238. Tolls, J. (2001) Sorption of veterinary pharmaceuticals in soils: a review. Environmental Science and Technology 35, 3397-3406.
239. Toor, G.S., Condron, L.M., Cade-Menun, B.J., Di, H.J. and Cameron, K.C. (2005) Preferential phosphorus leaching from an irrigated grassland soil. European Journal of Soil Science 56, 155-167.
240. Turner, B.L., Mahieu, N. and Condron, L.M. (2003) The phosphorus composition of temperate pasture soils determined by NaOH-EDTA extraction and solution 31P NMR spectroscopy. Organic Geochemistry 34, 1199-1210.
241. Ulyatt, M.J., Lassey, K.R., Shelton, I.D. and Walker, C.F. (2002) Seasonal variation in methane emission from dairy cows and breeding ewes. New Zealand Journal of Agricultural Research 45, 217-226.
242. van Wieren, S.E. (1991) The management of populations of large mammals. In: Spellerberg, F.B., Goldsmith, C.B. and Morris, M.G. (eds) The Scientific Management of Temperate Communities for Conservation. Blackwells, Oxford, pp. 103-128.
243. van Wieren, S.E. (1991) The management of populations of large mammals. In: Spellerberg, F.B., Goldsmith, C.B. and Morris, M.G. (eds) The Scientific Management of Temperate Communities for Conservation. Blackwells, Oxford, pp. 103-128.
244. Vinten, A.J.A., Douglas, J.T., Lewis, D.R., Aitken, M.N. and Fenlon, D.R. (2004) Relative risk of surface water pollution by E. coli derived from faeces of grazing animals compared to slurry application. Soil Use and Management 20, 13-22.
245. Vinther, F.P., Hansen, E.M. and Eriksen, J. (2006) Leaching of soil organic carbon and nitrogen in sandy soils after cultivating grass-clover swards. Biology and Fertility of Soils 43, 12-19.
246. Virtue, W.A. and Clayton, J.W. (1997) Sheep dip chemicals and water pollution: UK fluxes to the North Sea, Land Ocean Interaction Study (LOIS) Rivers Basins Research, the first two years. Science of the Total Environment 194-195, 207-217.
247. Walker, J.W., Thompson, C.H. and Jehne, W. (1983) Soil weathering stage, vegetation succession, and canopy dieback. Pacific Science 37, 471-481.
248. Walker, J., Thompson, C.H., Reddell, P. and Rapport, D.J. (2001) The importance of landscape age in influencing landscape health. Ecosystem Health 7, 7-14.
249. Walsingham, J.M. (1976) Effect of sheep grazing on the invertebrate population of agricultural grassland. Proceedings of the Royal Society of Dublin 11, 297-304.
250. Wang, C.J., Wang, S.P., Zhou, H. and Glindemann, T. (2007) Effects of forage composition and growing season on methane emission from sheep in the Inner Mongolia steppe of China. Ecological Research 22, 41-48.
251. Wang, Y.P., Meyer, C.P. and Galbally, I.E. (1997) Comparisons of field measurements of carbon diooxide and nitrous oxide fluxes with model simulations for a legume pasture in south east Australia. Journal of Geophysical Research 102, 28013-28024.
252. Ward, R.C. (1984) On the response to precipitation of headwater streams in humid areas. Journal of Hydrology 74, 171-189.
253. Wardle, D.A. and Bardgett, R.D. (2004) Human-induced changes in large herbivorous mammal density: the consequences for decomposers. Frontiers in Ecology and the Environment 2, 145-153.
254. Watkinson, A.R. and Ormerod, S.J. (2001) Grasslands, grazing and biodiversity: editors' introduction. Journal of Applied Ecology 38, 233-237.
255. Watson, C.A. and Younie, D. (1995) Nitrogen balances in organically and conventionally managed beef production systems. In: Pollott, G.E. (ed.) Grasslands into the 21st Century: Challenges and Opportunities. British Grassland Society, Reading, UK, pp. 197-199.
256. White, R.E., Helyar, K.R., Ridley, A.M., Chen, D., Heng, L.K., Evans, J., Fisher, R., Hirth, J.R., Mele, P.M., Morrison, G.R., Cresswell, H.P., Paydar, Z., Dunin, F.X., Dove, H. and Simpson, R.J. (2000) Soil factors affecting the sustainability and productivity of perennial and annual pastures in the high rainfall zone of south-eastern Australia. Australian Journal of Experimental Agriculture 40, 267-283.
257. White, R.E., Christy, B.P., Ridley, A.M., Okom, A.E., Murphy, S.R., Johnston, W.H., Michalk, D.L., Sanford, P., McCaskill, M.R., Johnson, I.R., Garden, D.L., Hall, D.J.M. and Andrew, M.H. (2003) SGS water theme: influence of soil, pasture type and management on water use in grazing systems across the high rainfall zone of southern Australia. Australian Journal of Experimental Agriculture 43, 907-926.
258. White, R.E., Christy, B.P., Ridley, A.M., Okom, A.E., Murphy, S.R., Johnston, W.H., Michalk, D.L., Sanford, P., McCaskill, M.R., Johnson, I.R., Garden, D.L., Hall, D.J.M. and Andrew, M.H. (2003) SGS water theme: influence of soil, pasture type and management on water use in grazing systems across the high rainfall zone of southern Australia. Australian Journal of Experimental Agriculture 43, 907-926.
259. Whitehead, D.C. and Raistrick, N. (1991) Effects of some environmental factors on ammonia volatilization from simulated livestock urine applied to soil. Biology and Fertility of Soils 11, 279-284.
260. Whitehead, D.C. and Raistrick, N. (1992) Effects of plant material on ammonia volatilization from simulated livestock urine applied to soil. Biology and Fertility of Soils 13, 92-95.
261. Wilkins, R.J. (2002) Environmental sustainability of wool production. Wool Technology and Sheep Breeding 50, 705-723.
262. Willatt, S.T. and Pullar, D.M. (1983) Changes in soil properties under grazed pastures. Australian Journal Soil Research 22, 343-348.
263. Wright, I. (2005) Meat and milk production from grass-based systems. In: Reynolds, S.G. and Frame, J. (eds) Grasslands: Developments Opportunities Perspectives, Science Publishers in association with the Food and Agriculture Organization of the United Nations (FAO), Enfield, New Hampshire, pp. 161-179.
264. Wright, R. (2004) A Short History of Progress. Text Publishing, Melbourne, Australia. Yeates, G.W., Skipp, R.A., Gray, R.A.J., Chen, L.Y. and Waghorn, T.S. (2007) Impact on soil fauna of sheep faeces containing a range of parasite control agents. Applied Soil Ecology 35, 380-389.
265. Younie, D. and Armstrong, G. (1996) Botanical and invertebrate diversity in organic and intensively fertilized grassland. In: Isart, J. and Llerena, J. (eds) Resource Use in Organic Farming, Proceedings of the first Workshop of the European Network for Scientific Coordination in Organic Farming. Bonn, Germany, December 1995, pp. 35-44.
266. Younie, D. and Baars, T. (2005) Organic grassland: principles, practices and potential. In: Reynolds, S.G. and Frame, J. (eds) Grasslands: Developments Opportunities Perspectives, Science Publishers in association with the Food and Agriculture Organization of the United Nations (FAO), Enfield, New Hampshire, pp. 207-232.
267. Zhou, Z.Y., Sun, O.J., Huang, J.H., Li, L.H., Liu, P. and Han, X.G. (2007) Soil carbon and nitrogen stores and storage potential as affected by land use in an agro-pastoral ecotone of northern China. Biogeochemistry 82, 127.