In previous papers we have considered the optimal mix of biodiversity in semi-arid rangelands, focusing on the steady state. This paper addresses the question of conservation in the optimal use of rangelands. That is, it considers the optimal trajectory of biodiversity change. There are two...

This report summarises existing knowledge on costs of sustainable forest management (SFM) in tropical and sub‐tropical forests. First, the scope of forest‐related cost studies and background information on definitions of and obstacles for SFM are given (Sections 1 and 2). The main part of...

This study evaluated changes in climate on tropical rainforest ecosystem in three Local Government Area of Rivers state, Nigeria. Structured questionnaires were administered randomly to 300 respondents. 89.7% affirms that they are aware of the change in climate, 10.3% were not aware. 33.6%...

Papua New Guinea houses the largest remaining tropical rainforest in the Asia Pacific Region yet is under grave threat from ongoing deforestation and degradation. This article looks at the challenges faced in introducing an international treaty to protect tropical rainforests particularly as...

This paper argues that tropical forests have become objects of climate and environ-mental governance. It begins with an analysis of the REDD mechanism in the UN Framework Convention on Climate Change, which combines legal, market and scien-tific rationalities with measurement, reporting and...

Characterization of preexisting flora is an essential preliminary step for successful land rehabilitation projects. This descriptive study was undertaken in a fragmented, dry tropical forest region in Panama. Five different habitat types were selected: active pasture, 2-yr and 5-yr abandoned...

Since its creation more than two decades ago as a voluntary market-based approach to improving forest management, forest certification has proliferated rapidly in developing countries. Yet we know little about whether and under what conditions it affects deforestation. We use rich forest...