For all scenarios, we subdivided the planning region into grids of 1 km2
planning units (n = 15,121), cut around existing MPAs, coastlines, and governance boundaries
(municipalities, alliances, provinces). With this method, existing MPAs were single planning
units. Depending on the scenario, we assigned each planning unit in the region to different
governance areas, but retained the same number of units for all scenarios. Planning units contained
one or more habitat types.