A standard model of the exploitation of a renewable resource by non-cooperating agents is considered. Under the assumption that the resource is sufficiently productive we prove that there exist infinitely many Markov-perfect Nash equilibria (MPNE). Although these equilibria lead to overexploitation of the resource (tragedy of the commons) it is shown that for any T > 0 there exist MPNE with the property that the resource stock stays in an arbitrary small neighborhood of the efficient steady state for at least T time periods. Furthermore, we derive a necessary and sufficient condition for maximal exploitation of the resource to qualify as a MPNE and show that this condition is satisfied if there are sufficiently many players, or if the players are sufficiently impatient, or if the capacity of each player is sufficiently high.
On analyse un modèle standard de l'exploitation des ressources renouvelables par des agents non-coopératifs. Dans le cas où les ressources sont suffisamment productives, on démontre l'existence d'un continuum d'équilibres Markov-parfaits de Nasch (EMPN). Quoique ces équilibres entrainent la surconsommation des ressources, on peut prouver que pour chaque T > 0, il y a des EMPN ayant la propriété que le stock de ressources demeure dans un voisinage arbitrairement petit de l'état stationnaire optimal pendant au moins T périodes. De plus, on obtient une condition nécessaire et suffisante pour que l'exploitation maximale des ressources soit un EMPN. On démontre que cette condition est vérifiée dans le cas où soit il y a beaucoup d'agents, soit les agents sont impatients, soit la capacité de chaque agent est grande.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
page. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)