Occasionally you read in the news that parasite x, plant y or animal z has been found in country abc which shouldn’t be the case and causes problems.
This is often a result of the ongoing climate change, increasing travel and global trade that allows many species to enter into new regions.
Because of the lack of natural predators or competitors, these new species can become locally dominant and replace established species.
My questions: what is the end game?
Will global biodiversity decline significantly to a few “core” species that are flexible in multiple climate zones or environment?
Or will the native species adapt or evolve further?
First, you want local organisms to support the local ecosystem. Various plants and animals depend on others. For example, if a bird eats one fish but not another, and the bad fish takes over, the birds die out.
The problem with a monoculture is that if there is any disease that affects them, it’s very easy for it to spread and collapse the whole population, leaving it completely lifeless.