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Artic Case Study- Edexcel As Geography
Terms in this set (18)
Ice sheets surrounds 8 countries
Jan av°C -35, July av°C -1.5
50-60% of ice could be lost by 2100
Tree Line- Environment
Increasing temperatures have led to this edge of habitat moving north. Species able to survive at higher altitudes.
Tundra ecosystems- Environment
Ecosystem which withstands intense cold being lost due to increasing tree line and warmer climate
Ground thawing out (can have positive impact on societies in intense cold as able to become more self-sufficient
Boreal forest- Environment
Increase in fire has led to reduction of stock. These account for 37% of effective carbon sink
Fish Stocks- Environment
Warmer waters has depleted stocks of Artic marine life. NEGATIVE MULTIPLIER EFFECT. Small fish affected first, which has much bigger effect higher up the environment
Polar Bears- Environment
Reduction of seals has led to a loss of food stock. Ice melts have reduced Spring hunting season.
80kg of fat
is lost during long summers- bears susceptible to disease.
155,000 live in the Arctic region
Cold and predictable. Difficult to adapt too.
Weak and thin ice -Socio/Economic
3 months during winter-fishing equipment on ice. Higher chance of collapse. More dangerous.
Less ice protecting from sea. Whole villages have been destroyed. Moving inland. ENVIRONMENTAL REFUGEES
Threat of flood -Socio/Economic
24 Inuit villages in Alaska now threatened by this extreme weather effect.
Distribution of employment-Socio/Economic
70% of income is from hunting caribou. 80% of Inuits hunt fish/caribou. These are declining in stocks,hitting the economy.
90% of food-Socio/Economic
Amount of nutrients taken in from Caribou and fish for high protein intake-vital for surviving cold conditions.
Importing food to replace declining stock-Socio/Economic
450 residents eat 100 tonnes of seal meat. Will cost US$1 million if have to import.
Shipping routes-Short-term advantage
Used to only be open 6 weeks a year. Now more often. 30% of Inuits earn from tourism
Shipping routes-Long-term disadvantage
Increase of oil tankers, increase of oil spillages damaging marine life further.
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