When you look at an arch, the stone in the very middle at the top - the one that holds all the other stones tightly together - is called the "keystone." In biology the term "keystone species" is used to describe a plant or animal upon which other species depend and without which eco-systems will likely fall apart (e.g. wolves, beavers, starfish).
"Bio-based economy" is another term that is also starting to pop up more in certain circles. Basically this contrasts the current petroleum based economy with a plant based paradigm. In both economies I would argue that carbon plays a role similar to that of a keystone species. However the difference in impacts between using new carbon (biomass from plants) versus historical carbon (oil, gas, coal) are enormous; nearly polar opposites in fact.
Carbonizing new carbon sources, such as plant residues, produces biochar plus a number of other useful co-products that can include heat energy, syngas, wood vinegar and more. Research on the use of biochar to displace all manner of goods for which dinosaur carbon is currently used has been expanding. Exciting new biomaterials including plasters, packaging, cosmetics, and more are being developed. In contrast to the "earth-ache" that fossil fuel based products cause, biochar based products actually revitalize the planet, both below and above-ground!
Think how much better off the planet would be if we would just let sleeping dogs (and dinosaurs) lie! - Kathleen Draper