case study on arctic tundra Flashcards
What is the Arctic Tundra?
The Arctic Tundra is a unique biome located around the northernmost regions of Earth, including Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia. It covers approximately 20% of the Earth’s surface.
What characterizes the climate of the Arctic Tundra?
The climate is characterized by cold temperatures, with summer ranging from 3°C to 12°C and winter from -28°C to -50°C. It has low annual precipitation (150-250 mm), mostly as snow.
What is permafrost?
Permafrost is a permanently frozen layer of soil beneath the surface, making agriculture and tree growth impossible.
What types of vegetation are found in the Arctic Tundra?
Dominant species include mosses, lichens, grasses, and dwarf shrubs, adapted to cold conditions and shallow soils.
What wildlife is commonly found in the Arctic Tundra?
Common fauna includes caribou, Arctic foxes, polar bears, snowy owls, and lemmings, many of which migrate to avoid harsh winter.
What challenges does the Arctic Tundra face due to climate change?
Challenges include melting permafrost releasing greenhouse gases, rising temperatures disrupting ecosystems, and shrinking sea ice affecting species.
What human activities impact the Arctic Tundra?
Human activities include resource extraction (oil and gas), mining, and tourism, which can damage fragile ecosystems.
What are some management and conservation strategies for the Arctic Tundra?
Strategies include establishing protected areas, promoting international agreements like the Arctic Council, and conducting scientific research.
What is the role of the Arctic Tundra in Earth’s climate?
The Arctic Tundra plays a significant role in regulating Earth’s climate but is under threat from human activities and climate change.
