For mature trees, it’s 2000 cones per year times between 60 and 200 seeds per cone, depending on tree type.
That’s 120,000 – 400,000 per year to you, bucko.
But only something like 22% to 55% of those seeds actually can germinate. Obviously the parent tree wouldn’t want all those to sprout! Especially not right around them! So the number of new trees that actually last very long is sustainably small.
Have a read (or at least a skim) of the cited article. Well-written and comprehensive. Good job US National Park Service! Doggone! Why can’t the whole Internet be as informative, professional and useful!?
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