Tundra and Its Ecology

Short: The tundra is a treeless, cold landscape zone stretching around the North Pole, characterized by permafrost soil. Despite extreme cold and short growing seasons, a surprisingly diverse flora and fauna has adapted there.

In more detail: The permanently frozen ground, permafrost, prevents deep root growth and leads to typical vegetation of mosses, lichens, and low shrubs.

In detail

• Permafrost soil: Only the topmost soil layer thaws in summer, while the subsoil stays permanently frozen, making drainage and tree growth difficult.
• Short growing season: Plants often have only a few weeks per year to grow, bloom, and reproduce.
• Adapted wildlife: Reindeer, snow hares, and arctic foxes have developed special adaptations like thick fur or color change to survive the extreme environment.
• Permafrost thawing: Climate change is increasingly thawing permafrost, which can release large amounts of stored methane and further intensify climate change.
• Migratory birds in summer: Many bird species use the short arctic summer to breed in the tundra before moving on.
• Alpine tundra: Similar vegetation zones also occur above the treeline in high mountains, regardless of geographic latitude.
• Importance for indigenous peoples: Several indigenous communities, such as the Sami in Scandinavia, have adapted their way of life to the tundra for centuries (gletscher-und-eiszeiten, zugvoegel-und-ihre-navigation).