livestock and the environment: drivers, impacts, responses
DESCRIPTION
Presented by Henning Steinfeld (FAO) at the ILRI@40 Conference, Addis Ababa, Ethiopia, 6–7 November 2014TRANSCRIPT
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LIVESTOCK AND THE ENVIRONMENT
Henning Steinfeld, FAO
Drivers, Impacts, Responses
Livestock-based options for sustainable food and nutritional security, economic well-being and healthy lives
ILRI@40 Conference
Addis Ababa, Ethiopia, 6–7 November 2014
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What are the GLOBAL DRIVERS influencing livestock production?
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RISING DEMAND FOR ANIMAL PRODUCTS
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+ 70%2005 - 2050DEMAND FOR ANIMAL PRODUCTS
:
Source: FAO 2012
RISING DEMAND FOR ANIMAL PRODUCTS
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2005 - 2050DEMAND FOR MEAT + 278%:
Source: FAO 2012
RISING DEMAND FOR ANIMAL PRODUCTS
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Source: IPCC 2014
CLIMATE CHANGE
Projected Temperature Change
Difference from 1986-2005 mean (°C)
Highest Temperature ProjectionsLowest Temperature Projections
Higher temperatures, shifting rainfalls, variabilitySmallholders and pastoralists to suffer most
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Limited land for agricultural expansion
1/3 of arable land for feed crops
Water scarcity
Energy
Nutrients
RESOURCE SCARCITY
Land degradation
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RESOURCE SCARCITY
6.4 billion tons DM of livestock feed
* Cassava, beans and soybeans** Bran, oilseed meals, pulp, molasses and wet distiller grains
Source: FAO, GLEAM
Tree leaves3%
Fresh grass and hay
39%
Grass legumes and sillages
3%
Swill1%
Crop residues26%
Agricultural by-products**
8%
Grains9%
Second grade crops unfit for human
consumption2%
Other edible*9%
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What are the IMPACTS ?
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Growing constraints to access grazing and water resources
High GHG emissions per unit of protein produced…
…but many other products: livestock as saving/insurance, economic activity, social role
DIFFERENT SYSTEMS AND DIFFERENT PURPOSES
Cattle herd, Ferlo, Senegal
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Global chain, imported feed
Lower GHG emissions per unit of protein produced…
… but other environmental impacts: nutrient pollution, potential land use change associated with imported feed, impacts on biodiversity
DIFFERENT SYSTEMS AND DIFFERENT PURPOSES
Pig farm, Chonburi, Thailand
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Resources: ~ 50% of roughages, 20% of silage, 30% of concentrates
High productivity: 20% of the global number of dairy cows, 73% of the global milk production
Main sources of emissions: enteric fermentation, manure, fossil energy use
DIFFERENT SYSTEMS AND DIFFERENT PURPOSES
Dairy production, OECD countries
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Grass-fed systems are dominant
6.7% of slaughtered animals were fed in feedlots
Land use and land use change is the main source of emissions, with an impact on other environmental criteria (biodiversity)
DIFFERENT SYSTEMS AND DIFFERENT PURPOSES
Beef production, Brazil
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Strong relationship between productivity and emission intensity
CONTRIBUTION TO CLIMATE CHANGE
AGRICULTURE: 20 to 30 % of anthropogenic climate gases; 2/3 from livestock (7.1 GT CO2eq)Overriding role of ruminants
MOST IMPORTANT SOURCES:
• Enteric methane• Feed production• Animal waste• Land use
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GHG EMISSIONS MITIGATION POTENTIAL
Large variability of emission Intensities within systems and regions
30% mitigation potential estimated through more efficient practices in resource use with existingtechnologies
Source: Gerber et al. (2013)
Emission intensity by commodity
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GHG EMISSIONS
Emission intensities per kg of protein
Source: FAO, GLEAM
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• Flexible resource users• Buffers for enhanced resilience
IMPACT OF CLIMATE CHANGE
• Lower rainfall and higher temperatures• Changing disease patterns• Variability
LAND-BASED LIVESTOCK PRODUCTION MOST EXPOSED TO CC
LIVESTOCK ARE NATURAL ADAPTERS
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NUTRIENT USE EFFICIENCY
Nutrient flow (nitrogen) in the beef production process(based on US and Netherlands national data)
Source: Leach et al. (2012)But: important role in nutrient cycling
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• Water use: 29% of total agr. water use
• Impact on vegetation and water cycles – higher run-offs• Water pollution: local impacts in areas of high animal concentration
RESOURCE SCARCITY
LIVESTOCK AND WATER
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LIVESTOCK AND BIODIVERSITY
EXTENT OF PASTURES: 26% OF ALL LAND – both positive and negative impacts
• Arable land use for feed and expansion• Aquatic systems (nutrient loading)• Positive roles
THREAT TO BIODIVERSITY IN 306 OF THE 825 ECOREGIONS
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LAND SHARING VS. LAND SPARING
INTENSIVE FARMINGHigh productivity
UNFARMEDHigh species
density
LAND SPARING
FARMED EXTENSIVELYModerate species density and
productivity in a larger area
LAND SHARING
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Agricultural intensity
Bio
div
ersi
ty
LAND SPARING IS BEST
LAND SHARING IS BEST
LAND SHARING VS. LAND SPARING
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What are the RESPONSE OPTIONS ?
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RESPONSES
• Efficiency of resource use – land, water, nutrients
• Emission intensity – CO2 eq per unit of product
• Sustainable intensification: feeds, genetics, health
• Reduce waste through recycling and recovering nutrients and energy
• Requires incentives, regulations and continuous innovation
INCREASE EFFICIENCY
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• protect assets, enhance multiple functions of livestock in smallholder and pastoral systems
• Integrated landscape management (optimize contributions rather than maximizing output) for food, biodiversity, water, cultural values
• Address overconsumption – healthy diets
• Reduce food-feed competition
RESPONSES
ENHANCE LIVELIHOODS AND HUMAN WELL-BEING
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• Limit livestock’s expansion into valuable eco-systems
• Integrated land use management (in particular in fragile eco-systems)
• Protect water resources
• Requires incentives and regulations
RESPONSES
PROTECT RESOURCES
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• Of global commons (e.g. climate)
• Of local commons (e.g. communal grazing, water)
• Incentive schemes (payment for environmental services, carbon markets)
RESPONSES
INCREASE RESILIENCE
• Livestock as a tool of adaptation
• improve coping capacity with shocks
IMPROVE GOVERNANCE
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SUMMARY
o Large environmental impact, negative and positive
o Context of growing demand, climate change and growing scarcities
o Diversity of systems, issues and responses
o Large potential to respond; social and economic co-benefits
o Requires pro-active policies, incentives and innovation
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Thank you
Sustainable livestock. For people, for the planet