Non-native species whose introduction causes ecological, economic, or human health harm. Tens-rule: ~1 in 10 introductions establish, ~1 in 10 established become invasive. Key pressure on island endemics.
Non-native species whose introduction causes ecological, economic, or human health harm. Tens-rule: ~1 in 10 introductions establish, ~1 in 10 established become invasive. Key pressure on island endemics.