Question

What is bush tundra?

Answer 1

Tundra vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline.

Answer 2

Treeless ecosystems beyond the limit of boreal forest and above the altitude limit of trees in high mountain ranges. The tundra vegetation consists primarily of grasses, sedges, small flowering herbs, low shrubs, lichen, and mosses. Permafrost occurs almost everywhere beneath the vegetative cover.