I can’t say about quibbling, but if you are interested in nibbling that’s what there is. There are many different types, that are eaten by different creatures, but the various forms are the only ‘non-animal’ life. I’m not sure how you would classify the tundra growths that are the zone below because that is a complex mass that is interwoven. It is dangerous to walk on because it will eventually span crevices and holes. Some of the holes are big enough for an International Harvester Travelall [an early SUV] to fall into. [One of my fond memories of Alaska]. The tundra is the reason they wait for the snow and ice before sending trucks North. It looks like a smooth carpet of green in the warmer months, but you don’t have a hint as to the actual land surface.