. "2013-04-07T14:26:46Z"^^ . "A tundra is a terrestrial biome which includes, across its spatial extent, only low-growing vegetation such as dwarf shrubs, sedges and grasses, mosses, and lichens. Tundra biomes rarely have monthly average temperatures above 10 degrees Celsius and have low evapotranspiration ratios."^^ . _:b1218309 . "ENVO:01000180"^^ . _:b1218309 . . "Preliminary definition."^^ . "SPIRE:Tundra"^^ . "pbuttigi"^^ . _:b1218309 . "ENVO"^^ . "tundra biome"^^ . _:b1218309 .