The paper analyses the conflict between wildlife conservation and its accompanying land-use in an East African context. In the model there are two agents. First, there is an agency managing the wildlife and the habitat of the wildlife, which is referred to as parkland. On the other hand, there is the group of agro-pastoralists living in the vicinity of the wildlife habitat, whose land-use is referred to as rangelands. The parkland is used for tourism production and hunting, while the rangelands are used for agro-pastoral production. Both agents will find it beneficial to expand their land-use, so there is a land-use conflict. This is analysed in two steps. First, social optimality is studied; then we study the utilization of the wildlife and its accompanying land-use when there is no unified resource policy and the park agency follows its self-interest. The effects on the two different management schemes of changing economic conditions, such as the recommendations of the CITES convention and a programme subsidizing agro-pastoral production, are discussed.

Water demand management is a key focus area for most water managers and even more so in developing countries since improved access to water is important to the poor. Different policies have been introduced to ensure a water management system th at cares for the poor, among them the Increasing Block Tariff (IBT) structure. Studies demonstrate that it is very important to know the shape of the demand curve when deciding on the IBT structure. This paper adds to the understanding of the factors that influence water consumption. The focus is on how water demand patterns vary with the level of income among urban dwellers. The results support the hypothesis that pricing is an ineffective measure to manage water consumption among the poor, while it is relatively more effective for the richest group. Therefore, redistribution using water pricing policy will hardly work. Copyright (c) 2006 The Authors. Journal compilation (c) 2006 Economic Society of South Africa.

This article develops a model of wild-resource exploitation that includes both the standard bioeconomic properties of growth and harvesting and a species-area relationship linked to habitat conversion. The model is developed for both a closed and an open economy. In the closed-economy model the characteristics of the long-run equilibrium are analysed in three versions of the model: the basic bioeconomic model, the inclusion of habitat conversion and the addition of biodiversity value. In the case of the open-economy model, we also examine the potential effects of trade interventions on the optimal exploitation of species and habitat conversion in the long run. The results confirm that the inclusion of habitat conversion as well as biodiversity value in a model of wild-resource exploitation yields significantly different outcomes than a basic bioeconomic model.

No abstract

No abstract