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Recent Environmental Changes/ Human Impacts

  • Resource exploitation
  • Coal, lead, copper and gold
  • Global warming
  • Natural gas drilling
  • Off-road vehicles
  • Desertification
  • Extinction of wildlife

Snow Leopard

  • Uncia Uncia
  • Cat
  • Adaptations

Long-Eared Hedgehog

  • Hemiechinus auritus
  • Central Asia

Gobi Desert

  • Northern China, southern Mongolia
  • Rain shadow desert
  • Temp. down to -40 deg. F
  • Continues to grow
  • Fossil discoveries

Taklamakan Desert

Wild Onion

  • In spring, revives winter-starved herds
  • Adaptations:
  • Extra-long roots
  • Fewer leaves
  • Northwest China
  • "Go in and you will never come out"
  • Rain shadow of Himalayas
  • Cold because of its extreme interior position

References

  • Hogan, C. (2013). Polar desert. Retrieved from http://www.eoearth.org/view/article/171735
  • Patagonia. (2013). In Encyclopædia Britannica. Retrieved from http://www.britannica.com/EBchecked/topic/446174/Patagonia

Bactrian Camel

  • Camelus ferus
  • Asia
  • Tolerance for cold
  • Adaptations
  • Two humps

Temperature & Precipitation

Patagonian Desert

  • Covers southern mainland Argentina
  • Min. temp. between 16 and -27 deg. F
  • North is semiarid, south is colder

Pygmy Armadillo

  • Dwarf armadillo

  • Zaedyus pichiy

  • South America

Polar Desert Climate

  • Temp. generally around the freezing point of water
  • Precipitation below 250 mm/year
  • Higher latitudes than tundra
  • Permafrost
  • In the Arctic: 1-5% of ground is covered by plants

Polar Deserts

Polar Desert Unique Features

  • Complete absence of sunlight for 9-10 months
  • Hypersaline lakes
  • Antarctic: coldest month has mean of -29 to -30 deg. C

Penguins

  • Emperor Penguin
  • Antartica
  • Diet
  • Adaptions

Antarctic Desert

  • Arid
  • High winds
  • Hypersaline lakes
  • Some areas have been ice-free for thousands of years
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