I like the concept of “assisted migration”. It makes sense, and I think if it’s managed properly, it could help to maintain the “natural” environment in many places.
I think in many cases, the landscape has already been drastically altered by humans, and people just aren’t aware. The whole “the plants that were here by this year” line-in-the-sand native designation feeds into this notion.
I’ve been very enthusiastic about learning the history of plants and animals on the island I currently live on, as it was substantially managed and unchanged by humans for hundreds of thousands of years. It’s an incredibly unique ecosystem which resulted in unique variations and subspecies of many plants and animals. In the past couple hundred years, humans introduced a variety of new animals for various reasons; mule deer, raccoons, squirrels and beavers and of course, rats.
The mule deer replaced 2 other species of deer (dawson caribou, and red deer which were hunted to extinction by colonizers), and have put so much pressure on the island’s ecosystems, since they have no natural predators. They’ve been keeping the young trees from maturing in many parts of the island, essentially creating hemlock/spruce deserts, where the undergrowth is nonexistent under 150+ year old trees.
Early colonizers assumed they could just replace the caribou and red deer with a similar counterpart, but now the deer are out of control.
Another notable mistake is how the forestry industry has been replanting logged forest lands with only high-value timber, going so far as to spray glyphosate
to repress deciduous trees, effectively causing a funky monoculture which can be eaten by the pine beetles which are now surviving winters due to climate change, leaving the dry dead forests susceptible to the growing threat of massive forest fires - Aaaaahhh!!! 🙀
Alright, I got carried away, but the moral of the story is that as long as the assisted migration is well managed and ethical (as yours is), I’m OK with it, but there are cases where human intervention and unintended side-effects can make things much worse (see rats, parasitic holly). On that note, I think most people on permies have better intentions and more sense than a capitalist forestry lobby, and colonists.