From agri-food systems to circular economy

5 important questions on From agri-food systems to circular economy

Which 5 planetary boundaries does agriculture trespasses?

1. Energy (dependence on fossil fuels as external inputs --> climate change)
2. Soil nutrients (non-replenishment --> biogeochemical N & P cycles disruption)
3. Land use change (lower landscape complexity and ecological integrity --> biodiversity loss)
4. Water use and pollution
5. Species extinction

Which 4 pillars of food security does climate change affect?

1. Availability: yield and production
2. Access: prices and ability to obtain food
3. Use: nutrition and food preparation
4. Stability: resilience

What is the main determinant of GHG emissions?

Our diets: with highest GHG emissions found for scenarios including high meat demand, especially if focused on ruminant meat and milk
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What is the system approach to agroecological transition?

Efficiency --> substitution --> redesign

What is the fundamental challence of farming?

How to obtain the maximum flow of useful energy carriers for society:
- to meet food human needs (food sovereignty)
- with the lowest possible energy cost
- and an ecological disturbance compatible with the maintenance of the rest of the ecosystem services and the renewal capacity of the agroecosystem funds

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