Alien species

Trade and travel are the primary drivers of biological invasion both into and within the United States, and prevention measures have been identified as the most cost-effective means of minimizing the introduction and impact of invasive species. A recognized gap in the US government’s knowledge of the role that trade has played in the introduction of invasive species into the US led to a study undertaken by the US Environmental Protection Agency’s Office of International Affairs and IUCN.

Biological invasion, an issue of growing importance due to the significant increase in international transportation and trade, can disturb the balance of local ecosystems and even destroy them. This collection of papers presented at the International Conference on Assessment and Control of Biological Invasion Risks held in August 2004 at Yokohama National University discusses risk assessment, risk management and eradication.

Aquaculture is an important economic activity in coastal areas of many countries. It offers opportunities to alleviate poverty, boosts employment, helps community development, reduces overexploitation of natural coastal resources, and enhances food security. It is one of the fastest growing sectors within fisheries.

The Global Invasive Species Database (GISD) is a free source of information about invasive alien species. It covers all taxonomic groups from micro-organisms to animals and plants, in all ecosystems. The GISD aims to increase public awareness about introduced species that negatively impact biodiversity, and to facilitate effective prevention and management activities by providing easy access to authoritative invasive species information.

Biological diversity faces many threats throughout the world. One of the major threats to native biological diversity is caused by Invasive Alien Species (IAS) which can damage or replace native animal and plant populations, as well as the health of our ecosystems. The impacts of IAS are immense, insidious and usually irreversible. The scope and cost of biological alien invasives is global and enormous in ecological, environmental and economic terms.