Not really. There are a huge number of invasive species that are perfectly happy taking over even without climate change. There is nothing magic about the temperature change from the bacterial perspective
I think the mean temperature change in Florida falls in that range.
The main exception to this is some locations and elevations that experience shorter winter freezes, which can have a major impact on seasonal insect population
Because they don't have enough predators, because of humans presence (birds, and more medium size insect eating animals are depleted, because humans prefer dogs, cats, cars, plastic wrapping, and laziness
It's not that. Many of these thing have no native predators on the north American continent,and easily out compete local organisms.
When it comes to things like soil bacteria and root fungus, it is even more pronounced. You can loose thousands of acres of monoculture tree to pathogens that they have evolutionary exposure to and we're not previously present in the area.
