The findings paint a new picture of life in the Arctic’s polar night and possibly beyond. Life may not be packed entirely into a few short months of summer; rather, the waters may be productive ...

The arctic tundra often lacks sunshine. Summer days last 24 hours ... Arctic ecosystems by helping to cycle nutrients and shape plant groups. Many caribou herds are in decline around the Arctic.

They analyzed the communities, typical for the local sub-Arctic tundra ... trigger soil erosion processes: the tundra's upper cover, being left without plant protection, warms up faster and ...

After locking carbon dioxide in its frozen soil for millennia, the Arctic ... finding tundra caribou numbers have decreased by 65 percent over the past two to three decades -- with summer heat ...

The arctic tundra encircles the North Pole ... only a few centimetres - may melt during the summer months, leaving muddy pools of water. Some plants and vegetation do grow here.