Invasive alien species are affecting native wildlife in almost every corner of the Earth. “An unwanted by-product of globalization, non-native species are harming ecosystem services, livelihoods and economies throughout the world”, said Ban Ki-moon - United Nations Secretary-General.
Invasive alien species are plants, animals and other organisms that are not native to an ecosystem. Introduced species - such as rats and cats - are one of the greatest drivers of biodiversity loss, and have been implicated in almost half of all bird extinctions in the past five centuries.
To increase understanding and raise awareness of biodiversity issues, the United Nations declared today - 22 May - the International Day for Biological Diversity (IDB). This year’s theme is drawing attention to the threats posed to biodiversity by invasive alien species.