IUCN

The precautionary principle, or precautionary approach, is now widely accepted in environmental law and policy at international and, increasingly, national level. However, the principle remains highly controversial, its meaning contested, its acceptance and implementation inconsistent across sectors and contexts and its impacts unclear.

The workshop was organised to improve the understanding of the dialectic between water-related infrastructures and institutional frameworks in West Africa.

Sharks and their relatives, the rays and chimaeras, are the diverse group of cartilaginous fishes that have evolved over 400 million years. Historically considered of low economic value to large-scale fisheries, today many of these fishes have become the target of directed commercial and recreational fisheries around the world, and they are increasingly taken in the by-catch of fisheries targeting other species.

Mountains are special places. For many they are sacred; to most they bring an uplifting of the spirit and refreshment; to all they bring water, and rich biodiversity. Many of them have received legislative recognition by designation as parks or reserves of various kinds, and it is for the planners and managers of this estate that this book has been written.

This report has been produced by ZSL in collaboration with WWF, IUCN and SSC. It considers for the first time the current status and trends of global vertebrates in the context of human pressures, with a particular focus on threatened, novel and evolutionary distinct species.

Le but de cette évaluation est de rassembler des informations sur les caméléons dont la situation est préoccupante en raison des volumes atteints récemment par le commerce à partir d'études réalisées sur le terrain.

The system of protected area management categories lies at the centre of IUCN's work and its mission; their effective use is of fundamental concern to the Union and its members. This project has looked at the successes, failures, strengths and weaknesses of the categories after a decade of use, with the intention of giving guidance on steps needed to improve their future effectiveness in response to changing needs and conditions.