Valentin Guye

In addition to all who helped me with this work, I am thankful to the 2 reviewers and the editor at Environmental and Resource Economics, journal of @eaere.bsky.social

Do not hesitate to reach out, especially if you need the accepted version of the manuscript.

To apply these tests, I detect crop-specific expansion responses across the tropics to pre-determined – therefore exogenous – increments in maize demand in the US.

I first map the theoretical ILUC mechanisms to a variety of crops. 🌾

Within this framework, observing specific crops provides empirical tests of specific mechanisms.

Indirect Land use Change Mechanisms: Tests from Biofuel Mandates and Pantropical Agriculture - Environmental and Resource Economics Agricultural supply and demand shocks can indirectly cause environmental damages as they propagate across space, time and commodity markets according to mechanisms that have been extensively theorized...

– Reduced-form paper on indirect land use change and biofuels – 

Biofuels can cut fossil use—but if feedstock demand drives tropical deforestation, climate gains vanish. 

In this new paper, I test the theoretical mechanisms behind this.

🔗 link.springer.com/article/10.1...

Depuis quelques jours, la Méditerranée est en surchauffe, avec une canicule marine et des écarts de +5°C. L'équivalent d'incendies sous-marin, avec une faune qui "faune et flore qui meurent comme si elles étaient brûlées" : bonpote.com/canicules-ma...

Smallholder cocoa farmers need support as EUDR compliance nears - Insights - Trase Trase research shows huge variations in the traceability of cocoa from Côte d’Ivoire and the likelihood of whether supplies will comply with the EU deforestation regulation. Support for smallholder fa...

Using Trase's supply chain model for Côte d'Ivoire cocoa, I found that #traceability differs across departments of origin, trading companies and countries of destination, and I reflected on the implications at each level regarding the EU deforestation regulation.
bit.ly/4cy8zKN

Côte d'Ivoire cocoa exports and deforestation - Insights - Trase Trase maps the international trade in cocoa from Côte d’Ivoire revealing which trading companies and consumer markets are most exposed to deforestation.

Last week, Trase released modelled data on the subnational Ivorian cocoa supply chain and embedded deforestation, from department to importing country, by trader, annually (2019-22). All useful links here: trase.earth/insights/cot... + to new open data on cooperatives: doi.org/10.14428/DVN...

Furthermore, the disclosed supply chains are concentrated in space, leaving vast areas where virtually all companies deny to hold themselves accountable, including in districts with lots of cocoa adjacent to remaining forest.

The companies disclosing their supply chains as part of their efforts to build accountability for sustainable sourcing handle 80% of cocoa exports from Ghana. Yet, the content of these disclosures allow to recover the district of production for only 9% of exports.

Cocoa traders fall short on supplier disclosure in Ghana Companies exporting cocoa from Ghana are failing to publicly demonstrate that their supplies are not grown on deforested land, according to research by Trase, raising questions over their sustainabili...

🍫As part of the research we - the Land Systems for Sustainability Lab - do in the Trase partnership, I collect supply chain disclosures made by cocoa traders. In Ghana, we find that these disclosures are of poor quality, raising doubts about sustainable sourcing claims.