François Bareille
@fbareille.bsky.social
420 followers 200 following 19 posts
Researcher in Economics (INRAE, Paris). Currently in visiting at EIEE, Milano. Climate Change, Biodiversity, Land-Use and Rock'n'roll - https://francoisbareille.wordpress.com/
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fbareille.bsky.social
Overall, increasing internal bonuses over external ones thus allows improving AB cost-effectiveness. Interestingly, landowners mostly enroll individually in such differentiated ABs.

As such, habitat agglomeration doesn’t always need cooperation—it just needs smart incentives.

10/10
fbareille.bsky.social
To overcome this issue, the regulator must raise external bonuses high enough to make each landowner better off independently.

This makes external conservation more expensive than internal bonuses. Cooperation is costly!

9/10
fbareille.bsky.social
External bonuses are trickier: both landowners must find it individually worthwhile to conserve. If just one of them faces a higher cost than the bonus, the deal collapses and the AB does not work—because they can’t compensate each other (while they can within landholdings)

8/10
fbareille.bsky.social
Here’s the intuition:

For internal bonuses, only the total surplus from the two plots matters. If the combined bonus exceeds the combined opportunity cost, the landowner will conserve both plots—no matter how the gains are split.

7/10
fbareille.bsky.social
Our simulations—calibrated with French data—show a clear pattern:

When the regulator's budget is limited, undifferentiated ABs (same internal & external bonuses) perform best.
But as the budget grows, prioritizing internal bonuses becomes increasingly cost-effective. Why?

6/10
fbareille.bsky.social
So we ask ourselves whether regulators should differentiate between these two types of bonuses?

To answer, we develop a spatially explicit ecological-economic game, with landowners choosing whether to cooperate and what to conserve, under a fixed regulatory budget.

5/10
fbareille.bsky.social
Why? Because external bonuses involve cooperation problems: two landowners must agree to conserve plots side-by-side.

Internal bonuses avoid this: a single landowner can conserve multiple adjacent plots without negotiating with others. This improves AB cost-effectiveness.

4/10
fbareille.bsky.social
Most ABs reward landowners when two conserved plots are adjacent, regardless of who owns the plots.

Yet, the two plots can be either on the same landholding (internal bonus), or on different landholdings (external bonus).

Raphaël and I show that this distinction matters.

3/10
fbareille.bsky.social
This work extends my 2023 paper with @mzavalloni.bsky.social in AJAE, where we showed that landowners enroll into agglomeration bonus (AB) in small groups—not the idealized "grand coalition" often assumed in previous AB models.

That finding led us to rethink how incentives work.

2/10
fbareille.bsky.social
Thrilled to share my new paper in @jeem-econ.bsky.social
, coauthored with Raphaël Soubeyran:

We explore how differentiating agglomeration bonus *within* vs. *between* landholdings can make biodiversity policies on habitat agglomeration more effective.

📄 sciencedirect.com/science/arti...

🧵 1/10
Individual versus group-level agglomeration bonuses to conserve biodiversity
Agglomeration bonuses (ABs) are payments conditional on the contiguity of landowners’ conservation areas. We study whether differentiating the bonuses…
sciencedirect.com
fbareille.bsky.social
I had the chance to present my ongoing work "Adapting to climate change with (in)complete land rights: Evidence from the Greece land registry reform" this morning at the University degli studi of Milano. Plenty of good comments from the audience!

Thanks for the engaging discussion ☺️
Reposted by François Bareille
gabrielzucman.bsky.social
Cela semble absurde, et j’ai été choqué la première fois que je l’ai compris, mais la France – il n'y a pas d'autre mot – est bien un paradis fiscal pour milliardaire

Explications détaillées 🧵
fbareille.bsky.social
Malheureusement le devoir m’appelle à Milan ! (Tu viens à l’IAERE à Rome la semaine prochaine ?)
fbareille.bsky.social
I had the chance to present some of my works at the University of Trento this morning. Very glad to the economics department for the invitation 🙂

Very nice people and landscapes there!
fbareille.bsky.social
La BNVD est disponible elle. Quelles sont ses limites pour vos recherches ? (Au delà du fait que achats ≠ utilisations)
Reposted by François Bareille
petergleick.bsky.social
Book burning?
If everything was digital in Hitler's 1930s Germany, this is what his book burning would have looked like: deletion of data, removal of websites, retraction of scientific studies, censorship of words like "equity," "diversity," "climate change."
fbareille.bsky.social
Our department is hiring a new permanent researcher working on topics related to environmental economics.

Information on job and application below 👇
The Paris-Saclay Applied Economics (PSAE), a joint research unit of INRAE and AgroParisTech, recruits a Junior research scientist in economics on environmental and nutritional policies. See the link: jobs.inrae.fr/en/open-comp...
Reposted by François Bareille
fbareille.bsky.social
Philippe Delacote et moi proposons un stage de M2 pour des étudiants intéressés par l’économie de l’environnement, avec une forte composante économétrie appliquée 👇
phildelacote.bsky.social
Impact causal des réserves d’eau agricoles sur l’agriculture

Stage de M2 à la Chaire Economie du Climat, supervisé avec @fbareille.bsky.social

Plus d'info ici:
www.chaireeconomieduclimat.org/wp-content/u...

@inrae-france.bsky.social
#EconSky
fbareille.bsky.social
Sure, winter holidays in France were good, but, god, I missed Italian coffees. Good to be back 💪
fbareille.bsky.social
Philippe Delacote et moi proposons un stage de M2 pour des étudiants intéressés par l’économie de l’environnement, avec une forte composante économétrie appliquée 👇
phildelacote.bsky.social
Impact causal des réserves d’eau agricoles sur l’agriculture

Stage de M2 à la Chaire Economie du Climat, supervisé avec @fbareille.bsky.social

Plus d'info ici:
www.chaireeconomieduclimat.org/wp-content/u...

@inrae-france.bsky.social
#EconSky
Reposted by François Bareille
phildelacote.bsky.social
Impact causal des réserves d’eau agricoles sur l’agriculture

Stage de M2 à la Chaire Economie du Climat, supervisé avec @fbareille.bsky.social

Plus d'info ici:
www.chaireeconomieduclimat.org/wp-content/u...

@inrae-france.bsky.social
#EconSky
Reposted by François Bareille
philippequirion.bsky.social
Great PhD, congrats, Romain!
By the way, Romain is on the Economics job market.
cired.bsky.social
🎓 [PhD defense] Congratulations to @romainfillon.bsky.social who has just defended his thesis “Climate Uncertainties” under the supervision of Céline Guivarch (ENPC, CIRED) and Vincent Martinet (INRAE, Université Paris-Saclay).
👉🏼https://www.centre-cired.fr/soutenance-de-these-romain-fillon/
fbareille.bsky.social
L’agenda caché de la FNSEA et la CR : ils se plaignent « officiellement » des accords commerciaux et des prix trop bas, mais négocient en réalité la fin de l’OFB et la fin des restrictions sur l’usage des pesticides dangereux.

Attention à ne pas répétez les erreurs de l’an passé
afp.com
🚜 Plus d'une centaine d'agriculteurs ont érigé jeudi à l'aube un mur en parpaings pour bloquer symboliquement l'entrée de l'Inrae, l'Institut national de la recherche pour l'agriculture, l'alimentation et l'environnement, a constaté un journaliste de l'AFP.
➡️ https://u.afp.com/59sK
fbareille.bsky.social
Elon qui me voit débarquer sur Bluesky

📍Milan