I didn't really feel anything from this story.  I don't care about amphibians and certainly don't care about them in England.  I just thought the science of it all was interesting, or the analysis . But it shows what humans do to all environments they come in contact with.  They change them.  The migrate and bring in new things.  And that affects stuff.  That's not always our fault, but that's the way of things.  And yet we think it's fine to let refugees and immigrants go where they want, as if there aren't repercussions for that. There are repercussions for everything.  Migration changes habitats.  Change isn't inherently bad, but it's inherently different, and people don't like that.