The study showed that grassland biomes exhibited the greatest decline in vegetation ... and cited pan-Arctic greening—a newer phenomenon where vegetation in the Arctic tundra is growing more rapidly ...

Niantic provides this helpful map to show which locations give which patterns. You can access this map yourself via tapping the Vivillon medal on your player info screen or you can take a look below.

The map is rendered using hand-drawn "tiles" to represent terrain, biomes, and structures. Tiles represent entire chunks at least - no peeking for caves or bases! Gravestones automatically appear ...

We surveyed the microbial community structure in cryoturbated soils from nine soil profiles in the northeastern Siberian tundra using high-throughput sequencing and quantification of bacterial ...