This paper examines the evolution of ejido tenure in Mexico since the 1992 constitutional and legal reforms in that Country. Prior to the Mexican Revolution, communal tenure had all but disappeared, but since 1920 community-based tenure re-emerged to become the dominant tenure form in Mexico. The paper investigates ejido, land tenure through an examination of ejido governance Structures and the tenure rules relating to the acquisition, transfer and extinction of land and resource rights. It draws on community-level research and numerous published case studies, relevant laws, and on data describing the status of ejidos countrywide. This reveals a diverse set of practices, which in many instances depart from the rules as defined in the Agrarian Law and even in internal community regulations. Land tenure plays a critical mediating role in the inter-relationship, between humans and the environment. Using the framework of resilience I examine the persistence of ejido tenure and its dynamics in the aftermath of major land policy and legal reforms. Three major 'shocks' are identified which are seriously challenging the resilience of ejidos. These are the 1992 legal reforms, NAFTA and the resulting out-migration from rural Mexico, and urbanization. I conclude that ejidos have generally been resilient enough to accommodate the 1992 reforms, but problems with cross-generational transfers that stem in part from labor migration, and urbanization have set ejidos on a course that could ultimately overcome all but the most resilient communities. (C) 2008 Elsevier Ltd. All rights reserved.
