Which of these is not an example of alien species invasion?

Four major causes of biodiversity loss include - habitat loss and fragmentation, overexploitation, alien species invasion and co extinction. When an alien species are introduced in a region intentionally or unintentionally they may result in the decline or extinction of indigenous species. This is known as alien species invasion. When large habitats are broken down into fragments or are cleared for cultivation or for turning it into grasslands it results in the decline of many birds and animals. Cultivation of soyabean in Amazon forest is one such example of habitat loss and fragmentation.