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

Article

Ghahramani, Afshin and Moore, Andrew D.. 2015. "Systemic adaptations to climate change in southern Australian grasslands and livestock: production, profitability, methane emission and ecosystem function." Agricultural Systems. 133, pp. 158-166. https://doi.org/10.1016/j.agsy.2014.11.003
Article Title

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

ERA Journal ID5173
Article CategoryArticle
AuthorsGhahramani, Afshin (Author) and Moore, Andrew D. (Author)
Journal TitleAgricultural Systems
Journal Citation133, pp. 158-166
Number of Pages9
Year2015
PublisherElsevier
Place of PublicationNetherlands
ISSN0308-521X
1873-2267
Digital Object Identifier (DOI)https://doi.org/10.1016/j.agsy.2014.11.003
Web Address (URL)http://www.sciencedirect.com/science/article/pii/S0308521X14001577
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. Financiallymotivated
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.

Keywordsagro-ecosystem, ANPP, soil environment, intensification, modeling, adaptation-mitigation tradeoffs
ANZSRC Field of Research 2020300210. Sustainable agricultural development
300205. Agricultural production systems simulation
300207. Agricultural systems analysis and modelling
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Byline AffiliationsCommonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
Institution of OriginUniversity of Southern Queensland
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Impact of climate changes on existing crop-livestock farming systems
Ghahramani, Afshin and Moore, Andrew D.. 2016. "Impact of climate changes on existing crop-livestock farming systems." Agricultural Systems. 146, pp. 142-155. https://doi.org/10.1016/j.agsy.2016.05.011