Tundra introduction

At which point does tundra begin?

• Above the treeline

• Below the treeline

What are the maximum summer temperatures in the tundra?

• 5C

• 8C

• 10C

• 12C

The ground is permanently frozen - what do we call this?

How much of the world's moveable carbon is contained within the permafrost and the tundra?

• Half

• A third

• A quarter

Net primary productivity in the tundra is...

• low

• medium

• high

The tundra covers...

• 8 million square kilometres

• 10 million square kilometres

• 5 million square kilometres

Why does land saturate so quickly in Tundra regions?

• Soil is frozen so cannot hold more water

• Snowmelt infiltrates leading to rapid saturation

• There is little precipitation

• There is high precipitation

Standing water on top of the soil layer leads to...

• aerobic decomposition

• anaerobic decomposition

• release of carbon dioxide

• release of methane

Biomass in tundra environments is ____ of that found in tropical rainforests?

• 1/50th

• 1/75th

• 1/100th

Where is most carbon fixated in the tundra?

• Sedimentary rock

• Permafrost soils

• Biomass

• Atmosphere