My thoughts...
I think the caribou might appreciate the roads that we'll be putting in. It would make their long commute easier. I also think the caribou would appreciate the added safety men bring along with them when building sites. Predators pose a safety issue for workers. Predators are chased away or killed if they attack.
If the caribou don't increase because we're there, I'd be surprised.
Not to mention the nice heat off the oil pipes.