I hadn't picked up on the plants/biomass uncertainty before, and it's very helpful to have confirmation that there is still much to be investigated (I struggle to accept the uncertainties, I must confess).
1/2
(I'm a little surprised that some scientists say that permafrost isn't near the top of their list of concerns. It strikes me as being of great concern in the coming decades!)
As always thanks for all your work.
All the best, Ben