Las instituciones de acción colectiva y los sistemas de derechos de propiedad moldean la forma en que la gente usa los recursos naturales.A su vez, estos patrones de uso afectan los resultados de los sistemas de producción agrícola de la gente. Juntos, los mecanismos de acción colectiva y los sistemas de derechos de propiedad definen los incentivos a los que la gente accede por llevar a cabo estrategias de gestión sostenible y productiva, y afectan el nivel y distribución de los beneficios de los recursos naturales.

This brief defines property rights and collective action and discusses the links to sustainability of natural resource management and agricultural systems and to poverty reduction, as well as the implications for policy and practice.

Traditional models of household economic behavior have portrayed households as unified entities. They assume that household members agree about decisions and share resources in the most equitable way possible. More recently, however, economists have come to view households as domains of difference, where multiple decisionmakers may have different preferences and, in many cases, control separate sets of resources. This new approach has greatly improved understanding of household resource allocation behavior.

Many decisions that affect the well-being of individuals are made within families or households. The processes by which resources are allocated among individuals and the outcomes of those processes are commonly referred to as “intrahousehold resource allocation.” Since the early 1990s a growing literature has paid increasing attention to the role that intrahousehold resource allocation plays in affecting the outcome of development policy (see Strauss and Thomas 1995; Behrman 1997; Haddad, Hoddinott, and Alderman 1997 for reviews).

Among financial institutions serving poor households around the world, microfinance programs have emerged as important players. These programs typically make small loans—sometimes as small as US$50 to US$100 and sometimes as large as several thousand dollars-to households lacking access to formal-sector banks (see, for example, Lapenu and Zeller 2001). One important achievement of the microfinance movement has been its relative success in deliberately reaching out to poor women living in diverse socioeconomic environments.

Since 1997 Mexico has provided poor families with cash benefits linked to children’s school attendance and regular clinic attendance, as well as in-kind health benefits and nutritional supplements, through the Programa Nacional de Educación, Salud y Alimentación (PROGRESA). Unlike previous social programs in Mexico, this nationwide antipoverty program targets transfers to the mother of the family.

This chapter challenges one of the main tenets of agricultural economics—that households behave as though they are single individuals, with production factors allocated efficiently between men and women. In many contexts this is a convenient and innocuous assumption. It can be quite restrictive, however, when investigating the causes and welfare consequences of gender differences in agriculture.

Much has been written about the importance of gender issues in designing and implementing agricultural evelopment projects (Cloud 1983; Alderman et al. 1994; Quisumbing et al. 1998). Part of this literature has been motivated by the important role that women play in food production, particularly in Sub-Saharan Africa (Boserup 1970; Dixon 1982; Gladwin and Macmillan 1989), as well as in the management of natural resources (Meinzen-Dick et al. 1997).

The previous sections have highlighted the importance of assets as a determinant of bargaining power within marriage. Both formal and informal institutions underlie asset accumulation and provide the basis for property rights. When women face social and legal restrictions in acquiring certain forms of assets, such as land, they may resort to accumulating other “assets” and investing in other forms of capital.

This brief describes two case studies as follows: "Sub-Saharan Africa, with the highest fertility rate in the world, faces increasing demographic pressure on its natural resource base.... Old strategies for coping with these new pressures on the natural resource base are becoming increasingly infeasible... Consequently, Africa's farmers require new solutions to address the increasing pressure on the continent's soil and water resources. Among hundreds of innovative efforts across the continent, two promising sets of responses have emerged in different locations....

The concept of social capital, well grounded in the sociological and anthropological literatures (for example, Coleman 1988), is increasingly being analyzed and used by economists and other development policy practitioners. The entry point for many economists is Robert Putnam’s research on Italian regional economic performance (Putnam 1993) and his subsequent work in the United States. For Putnam, “social capital refers to features of social organization such as networks, norms, and social trust that facilitate coordination and cooperation for mutual benefit” (Putnam 1995, 67).