Assessment of grazing management on farm greenhouse gas intensity of beef production systems in the Canadian Prairies using life cycle assessment

Agricultural Systems

Volumn 158, Issue , 2017, Pages 1-13

  Alemu, Aklilu W ^a   Janzen, Henry ^a   Little, Shannan ^a   Hao, Xiying ^a   Thompson, Donald J ^a   Baron, Vern ^b   Iwaasa, Alan ^c   Beauchemin, Karen A ^a   Kröbel, Roland ^a  

^a LETHBRIDGE RESEARCH CENTRE   (Canada)

^b LACOMBE RESEARCH CENTRE   (Canada)

^c SWIFT CURRENT RESEARCH AND DEVELOPMENT CENTRE   (Canada)

Author keywords

Beef production; Grazing management; Holos model; Soil carbon; Stocking rate

Indexed keywords

ANIMALIA; BOS; TRITICOSECALE;

EID: 85027710059     PISSN: 0308521X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.agsy.2017.08.003     Document Type: Article

References (114)

1. Adams, B.W., Richman, J., Poulin-Klein, L., France, K., Moisey, D., Rangeland Plant Communities and Range Health Assessment Guidelines for the Mixedgrass Natural Subregion of Alberta. Rangeland Management Branch, Public Lands and Forests Division, Alberta Environment and Sustainable Resource Development, Lethbridge, Pub. No. T/040. 2013, 144.
2. Allen, D.E., Pringle, M.J., Bray, S., Hall, T.J., O'Reagain, P.O., Phelps, D., Cobon, D.H., Bloesch, P.M., Dalal, R.C, What determines soil organic carbon stocks in the grazing lands of north-eastern Australia?. Soil Res. 51 (2013), 695–706.
3. Andrén, O., Kätterer, T., ICBM: the introductory carbon balance model for exploration of soil carbon balances. Ecol. Appl. 7 (1997), 1226–1236.
4. Andrén, O., Kätterer, T., Karlsson, T., ICBM regional model for estimations of dynamics of agricultural soil carbon pools. Nutr. Cycl. Agroecosyst. 70 (2004), 231–239.
5. Bailey, A.W., McCartney, D., Schellenberg, M.P., Management of Canadian Prairie Rangeland. Agriculture and Agri-food Canada, Cat. No. A52-178/2010E. 2010, 68.
6. Bailey, C.M., Lifespan of beef-type Bos taurus and Bos indicus × Bos Taurus females in a dry, temperate climate. J. Anim. Sci. 69 (1991), 2379–2386.
7. Baron, V.S., Doce, R.R., Basarab, J., Dick, C., Swath-grazing triticale and corn compared to barley and a traditional winter feeding method in central Alberta. Can. J. Plant Sci. 4 (2014), 1125–1137.
8. Baron, V.S., Mapfumo, E., Dick, A.C., Naeth, M.A., Okine, E.K., Chanasyk, D.S., Grazing intensity impacts on pasture carbon and nitrogen flow. J. Range Manag. 55 (2002), 535–541.
9. Basarab, J., Baron, V., López-Campos, Ó., Aalhus, J., Haugen-Kozyra, K., Okine, E., Greenhouse gas emissions from calf- and yearling-fed beef production systems, with and without the use of growth promotants. Animal 2 (2012), 195–220.
10. Beauchemin, K.A., Janzen, H.H., Little, S.M., McAllister, T.A., McGinn, S.M., Life cycle assessment of greenhouse gas emissions from beef production in western Canada: a case study. Agric. Syst. 103 (2010), 371–379.
11. Beauchemin, K.A., Janzen, H.H., Little, S.M., McAllister, T.A., McGinn, S.M., Mitigation of greenhouse gas emissions from beef production in western Canada – evaluation using farm-based life cycle assessment. Anim. Feed Sci. Technol. 166-167 (2011), 663–677.
12. Beauchemin, K.A., McGinn, S.M., Methane emissions from feedlot cattle fed barley or corn diets. J. Anim. Sci. 83 (2005), 653–661.
13. Bolinder, M.A., Andrén, O., Kätterer, T., de Jong, R., VandenBygaart, A.J., Angers, D.A., Parent, L.-E., Gregorich, E.G., Soil carbon dynamics in Canadian agricultural ecoregions: quantifying climatic influence on soil biological activity. Agric. Ecosyst. Environ. 122:4 (2007), 61–470.
14. Bolinder, M.A., Andrén, O., Kätterer, T., Parent, L.-E., Soil organic carbon sequestration potential for Canadian agricultural ecoregions calculated using the introductory carbon balance model. Can. J. Soil Sci. 88 (2008), 451–460.
15. Bolinder, M.A., Janzen, H.H., Gregorich, E.G., Angers, D.A., VandenBygaart, A.J., An approach for estimating net primary productivity and annual carbon inputs to soil for common agricultural crops in Canada. Agric. Ecosyst. Environ. 118 (2007), 29–42.
16. Bonesmo, H., Beauchemin, K.A., Harstad, O.M., Skjelvåg, A.O., Greenhouse gas emission intensities of grass silage based dairy and beef production: a systems analysis of Norwegian farms. Livest. Sci. 152 (2013), 239–252.
17. Briske, D.D., Derner, J.D., Brown, J.R., Fuhlendorf, S.D., Teague, W.R., Havstad, K.M., Gillen, R.L., Ash, A.J., Willms, W.D., Rotational grazing on rangelands: reconciliation of perception and experimental evidence. Rangel. Ecol. Manag. 61 (2008), 3–17.
18. California Rangelands Research and Information Center, Grazing Management Terms. Agronomy and Range Science, UC Davis, Fact sheet No. 21. http://www.ucanr.edu/sites/UCCE_LR/files/180556.pdf, 1995 (accessed on 26.03.16).
19. Cederberg, C., Persson, M., Neovius, K., Molander, S., Clift, R., Including carbon emissions from deforestation in the carbon footprint of Brazilian beef. Environ. Sci. Technol. 45 (2011), 1773–1779.
20. Church, J.S., Raymond, A.F., Moote, P.E., Van Hamme, J.D., Thompson, D.J., Investigating the carbon footprint of cattle grazing the Lac du Bois Grasslands of British Columbia. J. Ecosyst. Manage. 15 (2015), 1–14.
21. Clark, H., Greenhouse Gas Emissions From Ruminant Livestock; Are They Important and Can We Reduce Them?. Proceedings from International Symposium on Impact of Global Warming on Food and Agriculture, Tsukuba, Japan, 2009.
22. Conant, R.T., Ogle, S.M., Paul, E.A., Paustian, K., Measuring and monitoring soil organic carbon stocks in agricultural lands for climate mitigation. Front. Ecol. Environ. 9 (2010), 169–173.
23. Crosson, P., Shalloo, L., O'Brien, D., Lanigan, G.L., Foley, P.A., Boland, T.M., Kenny, D.A., A review of whole farm systems models of greenhouse gas emissions from beef and dairy cattle production systems. Anim. Feed Sci. Technol. 166-167 (2011), 29–45.
24. Derner, J.D., Schuman, G.E., Carbon sequestration and rangelands: a synthesis of land management and precipitation effects. J. Soil Water Conserv. 62 (2007), 77–85.
25. Dodds, K.W., Wilson, K.C., Rehmeier, R.L., Knight, G.L., Wiggam, S., Falke, J.A., Dalgleish, H.J., Bertrand, K.N., Comparing ecosystem goods and services provided by restored and native lands. Bioscience 58 (2008), 837–845.
26. Dormaar, J.F., Johnston, A., Smoliak, S., Seasonal variation in chemical characteristics of soil organic matter of grazed and ungrazed mixed prairie and fescue grassland. J. Range Manag. 30 (1977), 195–198.
27. Dormaar, J.F., Smoliak, S., Willms, W.D., Distribution of nitrogen fractions in grazed and ungrazed fescue grassland AH horizons. J. Range Manag. 43 (1990), 6–9.
28. Dormaar, J.F., Willms, W.D., Sustainable production from the rough fescue prairie. J. Soil Water Conserv. 45 (1990), 137–140.
29. Dormaar, J.F., Willms, W.D., Water-extractable organic matter from plant litter and soil of rough fescue grassland. J. Range Manag. 45 (1992), 152–158.
30. Dormaar, J.F., Willms, W.D., A comparison of soil chemical characteristics in modified rangeland communities. J. Range Manag. 53 (2000), 453–458.
31. Douwes, H., Willms, W., Long-term grazing at Stavely, Alberta. Prairie Soil Crop J. 5 (2012), 116–122.
32. Dyer, J.A., Vergé, X.P.C., Desjardins, R.L., Worth, D.E., The protein-based GHG emission intensity for livestock products in Canada. J. Sustain. Agric. 34 (2010), 618–629.
33. Ellert, B.H., Janzen, H.H., McConkey, B.G., Measuring and comparing soil carbon storage. Lal, R., Kimble, J.M., Follett, R.F., Stewart, B.A., (eds.) Assessment Methods for Soil Carbon, 2001, Lewis Publishers, Boca Raton, 131–146.
34. Environment Canada, National Inventory Report 1990–2014 (Parts 1, 2 and 3): Greenhouse Gas Sources and Sinks in Canada. The Canadian Government's Submission to the UN Framework Convention on Climate Change. Greenhouse Gas Division. 2015, Environment Canada, Gatineau, QC http://www.ec.gc.ca/ges-ghg/ (accessed 15.02.16).
35. Grant, R.F., Juma, N.G., Robertson, J.A., Isaurralde, R.C., McGill, W.B., Long-term changes in soil carbon under different fertilizer, manure and rotation: testing the mathrematical model ecosystem with data from the Breton plots. Soil Sci. Am. J. 65 (2001), 205–214.
36. Haferkamp, M.R., Macneil, M.D., Grazing effects on carbon dynamics in the northern mixed-grass prairie. Environ. Manag. 33:Suppl. 1 (2004), S462–S474.
37. Hao, X., Chang, C., Travis, G.R., Zhang, F., Soil carbon and nitrogen response to 25 annual cattle manure applications. J. Plant Nutr. Soil Sci. 166 (2003), 239–245.
38. Heitschmidt, R.K., Dowhower, S.L., Pinchak, W.E., Canon, S.K., Effects of stocking rate on quantity and quality of available forage in a southern mixed grass prairie. J. Range Manag. 42 (1989), 468–473.
39. 2 emissions. Gerber, P.J., Henderson, B., Makkar, H.P.S., (eds.) FAO Animal Production and Health Paper No. 177, 2013, FAO, Rome, Italy.
40. Hünerberg, M., Little, S.M., Beauchemin, K.A., McGinn, S.M., O'Connor, D., Okine, E.K., Harstad, O.M., Kröbel, R., McAllister, T.A., Feeding high concentrations of corn dried distillers’ grains decreases methane, but increases nitrous oxide emissions from beef cattle production. Agric. Syst. 127 (2014), 19–27.
41. Intergovernmental Pannel on Climate Change (IPCC), Guidelines for national greenhouse gas inventories. Eggleston, S., Buendia, L., Miwa, K., Ngara, T.K., Tanabe, H., (eds.) Intergovernmental Panel on Climate Change. Prepared by the National Greenhouse Gas Inventories Programme, 2006, IGES, Japan.
42. Iwaasa, A.D., McConkey, B., Wang, H., Effects of native and tame grassland species reintroduction on carbon sequestration potential on the Canadian Prairies. J. Anim. Sci., 94(Suppl. 5), 2016 (J. Dairy Sci. Vol. 99, E-Suppl. 1).
43. Iwaasa, A.D., Schellenberg, M.P., Reestablishment of a Mixed Native Grassland in Southwest Saskatchewan. Saskatchewan ADF Final Report #20010042. 2005, 132.
44. Iwaasa, A.D., Schellenberg, M.P., McConkey, B., Re-establishment of native mixed grassland species into annual cropping land. Prairie Soil & Crop J. 5 (2012), 85–95.
45. Izaurralde, R.C., Nyborg, M., Solberg, E.D., Janzen, H.H., Arshad, M.A., Malhi, S.S., Molona-Ayala, M., Carbon storage in eroded soils after five years of reclamation techniques. Lal, L., Kimble, J.M., Follett, R.F. Stewart B.A., (eds.) Advances in Soil Science: Soil Processes and the Carbon Cycle, 1997, Lewis Publishers, CRC Press, Boca Raton, FL, USA, 369–385.
46. Janzen, H.H., What place for livestock on a re-greening earth?. Anim. Feed Sci. Technol. 166-167 (2011), 783–796.
47. Janzen, H.H., Beauchemin, K.A., Bruinsma, Y., Campbell, C.A., Desjardins, R.L., Ellert, B.H., Smith, E.G., The fate of nitrogen in agroecosystems: an illustration using Canadian estimates. Nutr. Cycl. Agroecosyst. 67 (2003), 85–102.
48. Johnson, K.A., Johnson, D.E., Methane emissions from cattle. J. Anim. Sci. 73 (1995), 2483–2492.
49. Johnston, A., Comparison of lightly grazed and ungrazed range in the fescue grassland of southern Alberta. Can. J. Plant Sci. 41 (1961), 615–622.
50. Johnston, A., Effect of grazing intensity and cover on the water-intake rate of fescue grassland. J. Range Manag. 15 (1962), 79–82.
51. Johnston, A., Dormaar, J.F., Smoliak, S., Long-term grazing effects on fescue grassland soil. J. Range Manag. 24 (1971), 185–188.
52. Kätterer, T., Andersson, L., Andrén, O., Persson, J., Long-term impact of consequential land use change on soil carbon stocks on a Swedish farm. Nutr. Cycl. Agroecosyst. 81 (2008), 145–155.
53. Kröbel, R., Bolinder, M.A., Janzena, H.H., Little, S.M., Vandenbygaart, A.J., Kätterer, T., Canadian farm-level soil carbon change assessment by merging the greenhouse gas model Holos with the Introductory Carbon Balance Model (ICBM). Agric. Syst. 143 (2016), 76–85.
54. Kuzyakov, Y., Schneckenberger, K., Review of estimation of plant rhizodeposition and their contribution to soil organic matter formation. Arch. Agron. Soil Sci. 50 (2004), 115–132.
55. Laycock, W.A., Conrad, P.W., Responses of vegetation and cattle to various systems of grazing on seeded and native mountain rangelands in Eastern Utah. J. Range Manage. 34 (1981), 52–58.
56. Lemke, R.L., VandenBygaart, A.J., Campbell, C.A., Lafond, G.P., Grant, B., Crop residue removal and fertilizer N: effects on soil organic carbon in a long-term crop rotation experiment on a Udic Boroll. Agric. Ecosyst. Environ. 135 (2010), 42–51.
57. Lesschen, J.P., van der Berg, M., Westhoek, H.J., Witzke, H.P., Oenema, O., Greenhouse gas emission profiles of European livestock sectors. Anim. Feed Sci. Technol. 166-167 (2011), 16–28.
58. Li, C., Hao, X., Ellert, B.H., Willms, W.D., Zhao, M., Han, G., Changes in soil C, N, and P with long-term (58 years) cattle grazing on rough fescue grassland. J. Plant Nutr. Soil Sci. 175 (2012), 339–344.
59. 15N value to long-term stocking rates on a rough fescue grassland. Soil Sci. Plant Nutr. 58 (2012), 326–333.
60. Li, C., Hao, X., Willms, W.D., Zhao, M., Han, G., Seasonal response of herbage production and its nutrient and mineral contents to long-term cattle grazing on a rough fescue grassland. Agric. Ecosyst. Environ. 132 (2009), 32–38.
61. Li, C., Hao, X., Willms, W.D., Zhao, M., Han, G., Effect of long-term cattle grazing on seasonal nitrogen and phosphorus concentrations in range forage species in the fescue grassland of southwestern Alberta. J. Plant Nutr. Soil Sci. 2010:173 (2010), 946–951.
62. Liebig, M.A., Gross, J.R., Kronberg, S.L., Phillips, R.L., Hanson, J.D., Grazing management contributions to net global warming potential: a long-term evaluation in the northern great plain. J. Environ. Qual. 39 (2010), 799–809.
63. Little, S., Linderman, J., Maclean, K., Janzen, H., HOLOS – A Tool to Estimate and Reduce Greenhouse Gases From Farms. Methodology and Algorithms for Versions 1.1.x. Agriculture and Agri-food Canada, Cat. No. A52-136/2008E-PDF. 2008, 158.
64. Lupo, C.D., Clay, D.E., Benning, J.L., Stone, J.J., Life-cycle assessment of the beef cattle production system for the Northern Great Plains, USA. J. Environ. Qual. 42 (2013), 1386–1394.
65. Manley, J.T., Schuman, G.E., Reeder, J.D., Hart, R.H., Rangeland soil carbon and nitrogen responses to grazing. J. Soil Water Conserv. 50 (1995), 294–298.
66. Manley, W.A., Hart, R.H., Samuel, M.J., Smith, M.A., Waggoner, J.R.J.W., Manley, J.T., Vegetation, cattle, and economic responses to grazing strategies and pressures. J. Range Mange. 50 (1997), 638–646.
67. Marshall, I.B., Schut, P., Ballard, M., A National Ecological Framework for Canada: Attribute Data. 1999, Environmental Quality Branch, Ecosystems Science Directorate, Environment Canada and Research Branch, Agriculture and Agri-Food Canada, Ottawa/Hull, Canada.
68. Mazzetto, A.M., Feigl, B.J., Schils, R.L.M., Cerri, C.E.P., Cerri, C.C., Improved pasture and herd management to reduce greenhouse gas emissions from a Brazilian beef production system. Livest. Sci. 175 (2015), 101–112.
69. McCartney, D.H., Vaage, A.S., Comparative yield and feeding value of barley, oat and triticale silage. Can. J. Anim. Sci. 74 (1994), 91–96.
70. McCollum, F.T.III, Gillen, R.L., Karges, B.R., Hodges, M.E., Stocker cattle response to grazing management in tallgrass prairie. J. Range Manage. 52 (1999), 120–126.
71. McGeough, E.J., Little, S.M., Janzen, H.H., McAllister, T.A., McGinn, S.M., Beauchemin, K.A., Life-cycle assessment of greenhouse gas emissions from dairy production in eastern Canada: a case study. J. Dairy Sci. 95 (2012), 5164–5175.
72. McKenzie, R.H., Bremer, E., Middleton, A.B., Pfiffner, P.G., Woods, S.A, Optimum seeding date and rate for irrigated cereal and oilseed crops in southern Alberta. Can. J. Plant Sci. 91 (2011), 293–303.
73. McKenzie, R.H., Middleton, A.B., DeMulder, J., Bremer, E., Fertilizer response of barley silage in southern and central Alberta. Can. J. Soil Sci. 84 (2004), 133–147.
74. Milchunas, D.G., Lauenroth, W.K., Quantitative effects of grazing on vegetation and soils over a global range of environments. Ecolo. Monog. 63 (1993), 327–366.
75. Myhre, G., Shindell, D., Breon, F.-M., Collins, W., Fuglestvedt, J., Huang, J., Koch, D., Lamarque, J.-F., Lee, D., Mendoza, B., Nakajima, T., Robock, A., Stephens, G., Takemura, T., Zhang, H., Anthropogenic and natural radiative forcing. Stocker, T.F., Qin, D., Plattner, G.K., Tignor, M., Allen, S.K., Boschung, J., Nauels, A., Xia, Y., Bex, V., Midgley, P.M., (eds.) Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, 2013, Cambridge University Press, Cambridge, UK and New York, NY, USA, 661–731.
76. Naeth, M.A., Bailey, A.W., Pluth, D.J., Chansyk, D.S., Hardin, R.T., Grazing impacts on litter and soil organic matter in mixed prairie and fescue grassland ecosystems of Alberta. J. Range Manag. 44 (1991), 7–12.
77. Naeth, M.A., Chanasyk, D.S., Grazing effects on soil water in Alberta foothills fescue grasslands. J. Range Manag. 48 (1995), 528–534.
78. Naeth, M.A., Chanasyk, D.S., Rothwell, R.L., Bailey, A.W., Grazing impacts on infiltration in mixed prairie and fescue grassland ecosystem of Alberta. Can. J. Soil Sci. 70 (1990), 593–605.
79. Naeth, M.A., Chanasyk, D.S., Rothwell, R.L., Bailey, A.W., Grazing impacts on soil water in mixed prairie and fescue grassland ecosystems of Alberta. Can. J. Soil Sci. 71 (1991), 313–325.
80. Nagy, C.N., Energy and Greenhouse Gas Emissions Coefficients for Inputs Used in Agriculture. Report to the Prairie Adaptation Research Collaborative. 2000, 11.
81. Nguyen, T.L.T., Hermansen, J.E., Mogensen, L., Environmental consequences of different beef production systems in the EU. J. Clean. Prod. 18 (2010), 756–766.
82. NRC, Nutrient Requirements of Beef Cattle, 7th Revised Edition. 2000, National Academy Press, Washington, USA.
83. O'Mara, F.P., The significance of livestock as a contributor to global greenhouse emissions today and in the near future. Anim. Feed Sci. Technol. 166-167 (2011), 7–15.
84. Pattey, E., Trzcinski, M.K., Desjardins, R.L., Quantifying the reduction of greenhouse gas emissions as a result of composting dairy and beef cattle manure. Nutr. Cycl. Agroecosyst. 72 (2005), 173–187.
85. Pelletier, N., Pirog, R., Rasmussen, R., Comparative life cycle environmental impacts of three beef production strategies in the upper midwestern United States. Agric. Syst. 103 (2010), 380–389.
86. Phetteplace, H., Johnson, D., Seidl, A., Greenhouse gas emissions from simulated beef and dairy livestock system in the United States. Nutr. Cycl. Agroecosyst. 60 (2001), 99–102.
87. Pinares-Patiño, C.S., D'Hour, P., Jouany, J.-P., Martin, C., Effects of stocking rate on methane and carbon dioxide emissions from grazing cattle. Agric. Ecosyst. Environ. 121 (2007), 30–46.
88. Pineiro, G., Prauelo, J.M., Oesterheld, M., Jobbagy, E.G., Pathways of grazing effects on soil organic carbon and nitrogen. Rangel. Ecol. Manag. 63 (2010), 109–119.
89. Pitts, J.S., Bryant, F.C., Steer and vegetation response to short duration and continuous grazing. J. Range Manag. 40 (1987), 386–389.
90. Poeplau, C., Don, A., Vesterdal, L., Leifeld, J., Wesemael, B.V., Schumacher, J., Gensior, A., Temporal dynamics of soil organic carbon after land-use change in the temperate zone – carbon response functions as a model approach. Glob. Chang. Biol. 17 (2011), 2415–2427.
91. Reeder, J.D., Schuman, G.E., Influence of livestock grazing on C sequestration in semi-arid mixed-grass and short-grass rangelands. Environ. Pollut. 116 (2002), 457–463.
92. Rochette, P., Guilmette, D., Chantigny, M.H., Angers, D.A., MacDonald, J.D., Bertrand, N., Parent, L.-É., Côté, D., Gasser, M.O., Ammonia volatilization following application of pig slurry increases with slurry interception by grass foliage. Can. J. Soil Sci. 88 (2008), 585–593.
93. Rotz, C.A., Muck, R.E., Changes in forage quality during harvest and storage. Fahey, G.C., Collins, M., Mertens, D.R., Moser, L.E., (eds.) Forage Quality, Evaluation, and Utilization, 1994, American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, Madison, Wisc., USA, 828–868.
94. SCCC (Soil Conservation Council of Canada), Global Warming and Agriculture, Livestock. http://www.soilcc.ca/resources.htm, 2001 (accessed 15.02.16).
95. Schellenberg, M.P., Biligetu, B., Iwaasa, A.D., Species dynamic, forage yield, and nutritive value of seeded native plant mixtures following grazing. Can. J. Plant Sci. 92 (2012), 699–706.
96. Semmartin, M., Garibaldi, L.A., Chaneton, E.J., Grazing history effects on above- and below-ground litter decomposition and nutrient cycling in two co-occurring grasses. Plant Soil 303 (2008), 177–189.
97. Sheppard, S.C., Bittman, S., Donohoe, G., Flaten, D., Wittenberg, K.M., Small, J.A., Berthiaume, R., McAllister, T.A., Beauchemin, K.A., McKinnon, J., Amiro, B.D., MacDonald, D., Mattos, F., Ominski, K.H., Beef cattle husbandry practices across ecoregions of Canada in 2011. Can. J. Anim. Sci. 95 (2015), 305–321.
98. Smith, D.G., Hoppe, T.A., Prairie Agricultural Landscapes: A Land Resource Review. 2000, Prairie Farm Rehabilitation Administration, Agriculture and Agri-Food Canada, Regina, SK 0-662-84460-2, 179.
99. Smith, P., Martino, D., Cai, Z., Gwary, D., Janzen, H., Kumar, P., McCarl, B., Ogle, S., O'Mara, F., Rice, C., Scholes, B., Sirotenko, O., Agriculture, climate change 2007. Metz, B., Davidson, O.R., Bosch, P.R., Dave, R., Meyer, L.A., (eds.) Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007, Cambridge University Press, Cambridge, UK, 499–540.
100. 4) budget of nine European grassland sites. Agric. Ecosyst. Environ. 121 (2007), 121–134.
101. Soussana, J.F., Tallec, T., Blanfort, V., Mitigating the greenhouse gas balance of ruminant production systems through carbon sequestration in grasslands. Animal 4 (2010), 334–350.
102. Su, Y.Z., Li, Y.L., Cui, J.Y., Zhao, W.Z., Influences of continuous grazing and livestock exclusion on soil properties in a degraded sandy grassland, Inner Mongolia, northern China. Catena 59 (2005), 267–278.
103. Teague, W.R., Dowhower, S.L., Baker, S.A., Haile, N., DeLaune, P.B., Conover, D.M., Grazing management impacts on vegetation, soil biota and soil chemical, physical and hydrological properties in tall grass prairie. Agric. Ecosyst. Environ. 141 (2011), 310–322.
104. VandenBygaart, A.J., Gregorich, E.G., Angers, D.A., Influence of agricultural management on soil organic carbon: a compendium and assessment of Canadian studies. Can. J. Soil Sci. 83 (2003), 363–380.
105. Walton, P.D., Martinez, R., Bailey, A.W., A comparison of continuous and rotational grazing. J. Range Manag. 34 (1981), 19–21.
106. Wang, T., Teague, W.R., Park, S.C., Bevers, S., GHG mitigation potential of different grazing strategies in the United States Southern Great Plains. Sustain. For. 7 (2015), 13500–13521.
107. Wang, X., VandenBygaart, A.J., McConkey, B.C., Land management history of Canadian grasslands and the impact on soil carbon storage. Rangel. Ecol. Manag. 67 (2014), 333–343.
108. Western Beef Development Centre, 2014 Western Canadian Cow-calf Productivity Survey. 2015, 34 www.wbdc.sk.ca/wcccs.htm (accessed 12.01.16).
109. Williams, A.G., Audsley, E., Sandars, D.L., Determining the Environmental Burdens and Resource Use in the Production of Agricultural and Horticultural Commodities. Main Report. Defra Research Project IS0205. 2006, Cranfield University and Defra, Bedford, UK.
110. Willms, W.D., Forage production and utilization in various topographic zones of the fescue grassland. Can. J. Anim. Sci. 68 (1988), 211–223.
111. Willms, W.D., Rode, L.M., Freeze, B.S, Winter performance of Hereford cows on fescue prairie and in drylot as influenced by fall grazing. Can. J. Anim. Sci. 73 (1993), 881–889.
112. Willms, W.D., Dormaar, J.F., Adams, B.W., Douwes, H.E, Response of the mixed prairie to protection from grazing. J. Range. Manage. 55 (2002), 210–216.
113. Willms, W.D., Dormaar, J.F., King, J.R., Grazing impacts on the production stability of fescue prairie. Grasslands in Arid and Semi-Arid Regions 23 (2012), 23–26.
114. Willms, W.D., Smoliak, S., Schaalje, G.B., Cattle weight gain in relation to stocking rate on rough fescue grassland. J. Rage Manage. 39 (1986), 182–187.