Official IUCN publications

The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. The general aim of the system is to provide an explicit, objective framework for the classification of the broadest range of species according to their extinction risk.

On 5 November 2015, a large dam containing 52 million m3 of iron mining residues (tailings) collapsed in Mariana, Brazil. The collapse prompted both an emergency response, including assistance and compensation to affected people, and a short- and long-term set of mitigation measures structured in 42 programmes. These actions, determined by a group of government agencies, aim to restore and enhance the environmental quality and well-being of the affected populations.

On 5 November 2015, a large dam containing 52 million m3 of iron mining residues (tailings) collapsed in Mariana, Brazil. The collapse prompted both an emergency response, including assistance and compensation to affected people, and a short- and long-term set of mitigation measures structured in 42 programmes. These actions, determined by a group of government agencies, aim to restore and enhance the environmental quality and well-being of the affected populations.

The purpose of this study on seamount and hydrothermal vent ecosystems is to review the state of knowledge on the subject matter in order to better guide decision-making processes to develop and implement conservation and sustainable management measures, as well as to discuss knowledge gaps and present recommendations.

The Restoration Opportunities Optimization Tool (ROOT) was developed out of a need to more efficiently and effectively communicate the importance of ecosystem services to decision makers.

Increasing interest in measuring, modelling and valuing ecosystem services (ES), the benefits that ecosystems provide to people, has resulted in the development of an array of ES assessment tools in recent years. Selecting an appropriate tool for measuring and modelling ES can be challenging.

Les 'espèces envahissantes' (souvent appelées ravageurs, mauvaises herbes ou même maladies) sont des plantes, des animaux, des agents pathogènes et d’autres organismes qui sont délibérément ou involontairement emmenés au-delà de leur aire de répartition naturelle par des personnes et qui deviennent destructeurs de l’environnement ou des moyens de subsistance.

‘Invasive species’ (often called pests, weeds and diseases) are plants, animals, disease agents and other organisms taken beyond their natural range by people, deliberately or unintentionally, and which become destructive to the environment or human livelihoods.

The sea below 200 meters depth accounts for 95% of the volume of the ocean, making it the largest habitat for life on Earth. Though it is perpetually cold, generally dark, and subject to extreme pressures, the deep sea contains a wealth of unique and unusual species, habitats and ecosystems. It also contains a wealth of mineral resources, some of them in unique or highly enriched concentrations.

L’analyse de situation se concentre principalement sur les palmiers à huile dans le contexte de la conservation de la biodiversité à partir de la littérature publiée avant le 31 janvier 2018, et vise à fournir une alternative constructive