Convention on Biological Diversity (external link) (CBD)
States under Article 8(h) that each Contracting Party shall "prevent the introduction of, control or eradicate those alien species which threaten ecosystems, habitats or species". Contracting parties to the CBD also agreed to "achieve by 2010 a significant reduction of the current rate of biodiversity loss at the global, regional and national level" (2010 Biodiversity Target).
Convention on Wetlands of International Importance especially as Waterfowl Habitat (Ramsar Convention) (external link)
The Convention on Wetlands, signed in Ramsar, Iran, in 1971, is an intergovernmental treaty which provides the framework for national action and international cooperation for the conservation and wise use of wetlands and their resources.
United Nations Convention on the Law of the Sea (external link)
Article 196 of this Convention requires Member States to take all measures necessary to prevent, reduce and control the intentional or accidental introduction of species (non-native or new) to a particular part of the marine environment, which may cause significant and harmful changes.
International Plant Protection Convention (IPPC) (external link)
The IPPC has been in force since 1952, and has 111 governments as Contracting Parties. It was extensively revised in 1997 to, amongst other things, reflect the provisions of the WTO SPS Agreement (see below) such as the requirement for Pest Risk Analysis (PRA).