Major Threats?
One major threat is Air Pollution because it could then poison the lichen which provides food to many of the organisms in the area and if the lichens all die then the ecosystem would fall apart.
How Can We Conserve The Tundra?
One thing that we can do to save the Tundra is to use more eco friendly cars so we can keep less pollution out of the air and keep the air breathable for the lichen. Another thing we can do is we can recyle more so that less things are being burnt into the air and polluting it.