This paper explores the economic conditions for the viability of organic farming in a context of imperfect competition. While most research dealing with this issue has adopted an empirical approach, we propose a theoretical approach. Farmers have a choice between two technologies, the...

L’émergence du paysage dans le débat public est la traduction d’une préoccupation sur les modes d’occupation de l’espace par l’expansion des villes, le pullulement des infrastructures et les mutations des mondes rural et urbain. Elle est aussi le témoin de la valeur économique de...

The Marais des Baux wetland in southern France has for centuries been subject to drainage, almost causing its entire disappearance. With an increasing awareness of wetland ecosystem services, the extensive drainage is being questioned today. To guide policy-makers and landowners in their...

The type (antixenosis or antibiosis) of resistance against the aphids Myzus persicae (Sulzer) and Macrosiphum euphorbiae (Thomas) was characterized for the wild tuber-bearing potatoes, Solanum chomatophilum Bitter and Solanum stoloniferum Schltdl. & Bouché through behavioral (olfactometry and...

La réforme de la PAC offre l’opportunité de proposer des pistes d’amélioration des mesures agroenvironnementales (MAE). L’analyse des facteurs de choix d’une MAE par les agriculteurs peut mettre en évidence les leviers mobilisables pour augmenter leur participation à ce dispositif....

Natura 2000 is a European Union’s network of protected areas. In France, all forest owners whose forest is located in a Natura 2000 site could enroll in Natura 2000 program. After enrollment, the forest owner will benefit from a financial support which covers all theadditional cost due to...

There is a wide consensus among international institutions and national governments in favor of compact (i.e. densely populated) cities as a way to improve the ecological performance of the transport system. Indeed, when both the intercity and intra-urban distributions of activities are given, a...

In France, despite access to safe public drinking water, and in spite of its excessively high price compared to tap water, 42 % of the population still regularly drink bottled water. Using scanner data on French consumption combined with raw water quality and other environmental data, and using...

Competition in a multi-unit auction is measured both by the number of bidders and by the relative size of their demands, compared to the number of units on sale. For the same degree of competition (identical aggregate demand and supply), we can observe different demand structures. Do they have...

L’examen de la façon dont se combinent localement les principales activités économiques met en évidence le poids croissant dans les emplois ruraux, des activités destinées à satisfaire les besoins des populations locales, activités qui constituent le socle d’une économie dite «...