Milt, I think Ard's right (without beennie-foot of reshrach) KIDDING ARD, JUST KIDDING. Well, no on the research bit.
Montana's 'eco-system' would be hard to replace; it's HUGE and Mom Nature still is in charge. Lakes they do plant, rivers/streams, from what little I know the answer is 'no.'
"If it ain't broke, why fix it?"