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Systemic adaptations to climate change in southern Australian grasslands and livestock: Production, profitability, methane emission and ecosystem function

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  • Ghahramani, Afshin
  • Moore, Andrew D.

Abstract

The annual net primary production (ANPP) of temperate grasslands and production of livestock industries is predicted to decrease in southern Australia with future climate change. By using biophysical modelling, we address productivity and profitability of grazing systems while considering systemic combination of grassland management and animal genetic improvement options. Single incremental adaptations will not completely avert declines in productivity and profitability; hence, combinations of adaptations are needed. The synergistic effects of these adaptations could potentially offset decreasing production and profit in 2030 over the majority of southern Australia, but not in some drier regions after 2030. These results demonstrate the need for changes in strategies over time with greater complexity of adaptations in drier regions. Upscaling over all southern Australia, financially optimal systemic combination (fully enhanced systems) could increase profit by 68.61%, 68.63% and 50.81% in 2030, 2050, and 2070, compared to the production of the historical period with current farm system management. Financially-motivated changes to grazing systems will result in improvement in grassland health, soil environment, and water use efficiency. However, full adaption of systemic adaptation will lead to greater ruminant CH4 emission from 70 kg ha−1 yr−1 in baseline (1970–1999) to 84, 83, and 75 kg ha−1 yr−1 in 2030, 2050, and 2070. Higher rates of CH4 emissions may affect profitability depending on future emissions pricing. In most of the drier regions, greater input intensity and management complexity may be required which requirement is likely to increase over time. However some of the drier regions would still require transformative adaptations.

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  • Ghahramani, Afshin & Moore, Andrew D., 2015. "Systemic adaptations to climate change in southern Australian grasslands and livestock: Production, profitability, methane emission and ecosystem function," Agricultural Systems, Elsevier, vol. 133(C), pages 158-166.
    • Handle: RePEc:eee:agisys:v:133:y:2015:i:c:p:158-166
    DOI: 10.1016/j.agsy.2014.11.003
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    1. Ghahramani, Afshin & Moore, Andrew D., 2016. "Impact of climate changes on existing crop-livestock farming systems," Agricultural Systems, Elsevier, vol. 146(C), pages 142-155.
    2. Andrew P. Smith, 2022. "Biophysical Simulation of Sheep Grazing Systems Using the SGS Pasture Model," Agriculture, MDPI, vol. 12(12), pages 1-21, November.
    3. An-Vo, Duc-Anh & Cobon, David & Owens, Jo & Liedloff, Adam & Cowan, Tim & Power, Scott, 2024. "Impacts of environmental feedbacks on the production of a Central Queensland beef enterprise in a future climate," Agricultural Systems, Elsevier, vol. 214(C).
    4. Walter Leal Filho & Franziska Wolf & Stefano Moncada & Amanda Lange Salvia & Abdul-Lateef Babatunde Balogun & Constantina Skanavis & Aristea Kounani & Patrick D. Nunn, 2022. "Transformative adaptation as a sustainable response to climate change: insights from large-scale case studies," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 27(3), pages 1-26, March.
    5. Ghahramani, Afshin & Bowran, David, 2018. "Transformative and systemic climate change adaptations in mixed crop-livestock farming systems," Agricultural Systems, Elsevier, vol. 164(C), pages 236-251.
    6. Ghahramani, Afshin & Kingwell, Ross S. & Maraseni, Tek Narayan, 2020. "Land use change in Australian mixed crop-livestock systems as a transformative climate change adaptation," Agricultural Systems, Elsevier, vol. 180(C).
    7. Afshin Ghahramani & S. Mark Howden & Agustin del Prado & Dean T. Thomas & Andrew D. Moore & Boyu Ji & Serkan Ates, 2019. "Climate Change Impact, Adaptation, and Mitigation in Temperate Grazing Systems: A Review," Sustainability, MDPI, vol. 11(24), pages 1-30, December.

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