[AlotOfReading]

I've never heard that. The aboveground stems of aspens live just over a century, so Pando would be dead very quickly (in relative terms) if that was true. I see some articles online that new shoots are struggling to survive because of herbivores though.

[sidewndr46]

apparently I had it wrong. The net size is decreasing over time, but new shoots do still emerge and mature into healthy structures