I guess it depends on the objective of the closure.
In the case that we heard last week, the Eastport example, where the objective was to try to increase the biomass of lobster in a very finite area to benefit the communities that are alongside, a total closure or ongoing closure would allow the reproductive animals in that area to reproduce and their spawn would spread throughout the ecosystem and benefit the fishers who were alongside. At the same time, in terms of fishery management actions, and not necessarily directly related to the closure, the department took other measures so that only certain fishers could fish in the area. Those were the ones who were adjacent to the coast, so there was a double angle.
Maybe I'm not understanding your question well, but to take a west coast example of what's effective, if we look at the offshore Pacific seamounts and vents as an example of a closure, we're primarily protecting the bottom. Therefore, any bottom-type fisheries would have to be close to obtain the objective of the closure. However, at the same time, for surface fisheries such as tuna fishing, there's no reason in the world why tuna fishing can't continue.
We try to zero in on what we're trying to protect and minimize the impact that would have on the fisheries. If we're protecting bottoms and corals, then fisheries that don't impact the bottom, in theory or in reality, can still be allowed to continue, whereas those that do, won't.
When you're talking about a management measure in localized areas particularly—maybe they don't work as well in large offshore areas—if you have a fishery going on that impacts the bottom currently, and that's the activity we wish to stop, it is possible that a similar fishery could continue, or a fishery for that species, as long as there's a switch to gear that's less harmful to the environment.
Brett, do you have any other example to add?