These two studies do not contradict each other but reinforce the desperate need to get strongly regulated and strictly enforced MPAs in place - not just boxes on a map with little effect

How is that possible? Quite simple - the second paper only looks at a small subset of strictly regulated MPAs. They have good enforcement, and may never had any fishing in the first place - so very little occurs there now

The second paper finds very little industrial fishing in the highly regulated and strictly protected MPAs: buff.ly/HYHfwwh

The first paper finds a lot of industrial fishing in all coastal MPAs, which is alarming because there does not seem to be much protection at all: buff.ly/S9IIg0t

The mice were introduced by people, so this is a human-caused problem. Because mice have no natural predators on this island, the mouse population depletes it's food supply forcing mice to eventually explore alternative food sources like seabirds