The Ant Arctic and Tundra Regions

These areas are very rich in lichens, which often dominate the vegetation, both in biomass and in species diversity. Some lichens have been shown to decline, possibly indirectly as a result of global warming, due to increases in vascular plant biomass [5]. This is a potential threat to the rich (ant-)arctic lichen flora, but cannot be considered as an immediate one, as most (ant-) arctic lichens are relatively abundant and widespread, and a major impact will only occur in the unlikely event of the whole (ant-)arctic biome collapsing.

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