A recent scientific paper looking at Latin America lists «similar patterns of ecosystem recovery following rural - urban migration» in Patagonia, northwest Argentina, Ecuador, Mexico, Honduras and the montane deserts and Andean tundra ecosystems of Bolivia, Argentina and Peru. (scientificamerican.com)
However, it is important to know whether the response depends on the abundance of grazing animals, particularly reindeer, voles and lemmings, which are very common in tundra ecosystems. (sciencedaily.com)
Geochemical Influences on Solubility of Soil Organic Carbon in Arctic Tundra Ecosystems. (mbl.edu)