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Unformatted text preview: Geog 5 Notes 26/01/2009 15:05:00 Conifer Forests Found around 60 degrees N, not in southern hemisphere Alaska, Canada, Siberia, japan Alps, rockies 20-200 cm precipitation Flora and Fauna- Deciduous Siberian pines Oldest trees- bristlecone pines up to 4000 yrs old Fire is a key disturbance Human impact Varies enormously (N Canada has fire suppression v. Alps) Some fire suppression Tundra- 8m sq miles Arctic portions of Eurasia, Canada Alpine tundra in Rocky mountains, Andres, himalayas, Antarctica Mean annual temperature= -15 degrees celcius 5 billion tons of biomass- extremely low fara and fauna- low artic tundra- small shrubs and low forest canopy high artic tundra- canopy, human impact- frost heaving- some areas are very isolated and poor, not many people. Climate change- arctic ice caps are melting Ice- albedo feedback loop- 1903- took 2 years to get through the ice 2008- commercial ships went through the N/W passage in Canada without the help of ice breakers- change in the biome and human interactions were seeing...
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- Spring '10