The interpretation you're taking is that the reason you're creating a marine protected area is that you can't have any human activity. We're already saying that the “structure, composition and function of ecosystems are undisturbed by any human activity”. It doesn't mean that the zone has no human activity. It means the structure, composition, and function of the ecosystems.
For instance, when you look at our national parks system, which has a definition of “ecological integrity” that applies, you see that national parks on land are to maintain ecological integrity. That's a fundamental goal, but we know there's a lot of human activity in national parks. We don't want the activity on our terrestrial parks to overwhelm the ecosystems such that the structure, composition, and function of the ecosystems are disturbed by human activity. It doesn't mean there is no human activity occurring. It means that the level of human activity does not compromise natural ecological processes that you want to have continue and be self-sustaining, which includes, of course, the natural restoration of marine animal populations.
The health of the marine ecosystem is defined by criteria in proposed paragraph 35(1)(f) to say you are creating a marine protected area for this purpose. It won't be every marine protected area, but it does not preclude human activity even when you designate it because of its ecological integrity goal. That does not mean you can't have human activity in the area. It just means the human activity you have is consistent with maintaining ecological integrity.