I thought chaga was a typo. Do you mean "chaga" the mushroom?

Anyway, I meant my point about a key problem in general with trying to use taxes to fund important development projects.

> Do you mean "chaga" the mushroom?

Yes, because it only grows on birch trees, but harvesting the mushroom can damage the trees. That was sort of the point. :-)

Ah. So, who on Iceland cultivates chaga mushrooms? What ongoing efforts might they have that overlap with the birch foresters? (connecting the dots)

It can't be cultivated, it just grows wherever there are birch trees. So planting more birch would just mitigate any effects of over harvesting elsewhere, while increasing the global supply.