In addition to aesthetic and recreational services, National Parks provide critical watershed, biodiversity and other ecosystem services. Indications are that protected areas need to be a much higher percentage of the landscape if bioregional ecological sustainability is to be achieved. Maine and the nation would be well served by demonstrating large National Parks are still able to be designated in this day and age.

Boston.com / News / Local / At loggerheads over Maine woods
The subject is a proposed national park... which would encompass 3.2 million acres of the most spectacular wild area east of the Mississipppi River.