Nope, it says "50,000 non-native species". Invasive species are those non-native species that are thought to be harmful to the local ecosystem. Some non-native

Nope, it says "50,000 non-native species". Invasive species are those non-native species that are thought to be harmful to the local ecosystem. Some non-native species can actually be beneficial. The Wikipedia article doesn't offer any number on how many of those 50,000 are invasive, but other sources suggest less than 10%.