The total fertility rate is lower in island nations than non-island nations, and in small land-area nations than large land-area nations. Because islands tend to be much smaller than non-islands, these phenomena raise the question of whether there are two distinct effects or two manifestations of a single effect. This paper uses 1990 cross-sectional data on 198 countries to estimate the independent effects of islands and land-area on fertility. We find evidence that there are two separate effects. One possible explanation for the island and small-country fertility effects can be drawn from the theory of the commons, but another possible explanation is offered by the new theory of economic growth. We explore each of these possible explanations and conclude that the small-country effect is consistent with new theories of economic growth while the island effect is likely the result of a ‘commons effect’.

In this article, local institutions for forest conservation and management are analysed. The discussion is based on data from 37 villages and 180 households randomly sampled from a protected area in Rajasthan, India. Local management institutions are described, factors affecting inter-village differences in management institutions and collective action are analysed in a logit model, and the impact of institutions and other variables on common resource dependency and forest outcomes is tested using instrumental variable regression. Village population size has a positive effect and prior institutional experience a negative effect on the probability of collective action. It is concluded that efforts at improving forest management should not be confined to the poorest farmers. Large landowners are heavily involved in degrading use practises, especially when resources have good market potential. Local management institutions play a positive role in the area, but their impact appears insufficient to safeguard forests and commons from continued degradation. Conservation policies should target win–win options through interventions aimed at improving technologies for private and common lands as well as institutional changes.

Previous studies have examined the impact of an exogenous increase in population on the local resource base. In some recent theoretical work it has been proposed that resource scarcity, in turn, may affect fertility, and hence population growth rates. However, the sign and magnitude of this effect remains an open empirical question. In this paper we examine the impact of fuelwood and water scarcity on fertility rates using household data from rural South Africa. An individual choice model of fertility is estimated in which resource scarcity affects the demand for children through its effect on child mortality and productivity of children as resource collectors. Several alternative measures of resource scarcity are used, such as average distance traveled and time per trip for collecting water and fuelwood. We find wood scarcity to have a positive and significant effect on fertility. The effect of water scarcity is also positive, but not significant in general.

There have been few applications of the contingent valuation method (CVM) to forests in developing countries. When applied, the method is seldom utilized to improve the implementation of development projects. In this paper an application of CVM to the Orissa Social Forestry Project is reported. The results show considerable variation between villages and the analysis of the bid function shows underlying factors to project success that can be used in project planning. The policy implications are to plant new VWL where natural forests are inaccessible, where people have prior experience of VWL, and where fuel consumption relies heavily on market purchases. Such plantations are expected to give greatest benefit to families with few men and many women. An analysis of the reliability of the study concludes that many of the observed biases originate from the enumerators. The study also recommends that one should be careful with the use of a discrete design in a cultural context such as this that is prone to yea-saying, and that strategic bias can arise from an open ended question that follows up the start bid in a culture characterized by bargaining.

Wetlands provide a variety of important environmental services including flood control, wildlife habitat, waste treatment, and recreational opportunities. Because most of these services are public goods, the value of wetland preservation cannot be directly obtained from market prices but may be estimated using revealed-preference or stated-preference methods. We estimate the value to local residents of protecting the Kuantu wetland in Taiwan using contingent valuation. Estimates are sensitive to question format, with estimates using a double-bounded dichotomous-choice format about three times larger than estimates using a single open-ended question. Using the open-ended format, the estimated annual mean household willingness to pay to preserve the Kuantu wetland is about US$21. Using the dichotomous-choice questions, the value is about US$65. These estimates suggest the total present-value willingness to pay to preserve Kuantu wetland is about US$200 million to US$1.2 billion (discounted at 5–10%).