Arctic Flashcards
What will increased ultra radiation cause?
Phytoplankton will be destroyed at the base of the food chain.
What will northwards expansion of Boreal forest cause?
More forest fires and insect outbreaks in northern Russia.
How many Arctic foxes are found in Scandinavia?
Less than 200 individuals.
Why has the number of Arctic foxes declined?
Their key food source of lemmings and voles has declined due to poor snow conditions.
Increased competition from the red fox which is spreading northwards.
How much have polar bear numbers decreased by in Hudson Bay, Canada and why?
22% because of a loss of habitat and a decline in seals.
How many Inuit villages in Alaska are threatened by flooding?
24
How much have average Arctic temperatures risen by?
Twice the rate of the rest of the world.
How much permafrost is expected to thaw?
40%
