The only effect I’ve seen of wolves on elk has been what Mule Deer alluded to. I’m seeing them in places where they haven’t historically been. On big ranches, or in the case around here way out into the desert. While hunting deer in the desert this year I glassed up a bull with nearly black antlers. Not a tree for 50 miles. I’m sure he dispersed there due to predator pressure. Be that wolf or man.