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http://life.uiuc.edu/animalbiology/105/. ID: eee105. Password: prAIRie. Update. http://life.uiuc.edu/animalbiology/105/. ID: eee105. Password: prAIRie. Update. Proposal was to mandate 36 mpg by 2015. For 22 years average has been 24 mpg. 27.5 mpg for sedans. 20.7 mpg for SUV’s.
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http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Update
http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Update Proposal was to mandate 36 mpg by 2015 For 22 years average has been 24 mpg 27.5 mpg for sedans 20.7 mpg for SUV’s
Antarctica This was an ice shelf in East Antarctica
Antarctica West Antarctica rests on deep bedrock If it detaches, sea level will rise 5 - 6 meters
http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Oceans
Oceans • Weather generator • Transport surface : Voyages
Ancient Seafarers • Austronesian mariners
Ancient Seafarers • Austronesian mariners
Oceans The Kon-Tiki Expedition Thor Heyerdahl
Heyerdahl has seen the pollution of the oceans up close tar plastics
Oceans Jaques Cousteau
Oceans • Both Cousteau & Heyerdahl became ardent environmentalists • “The oceans are ill”
Oceans • e.g. abalone
Oceans • e.g. abalone
Productivity • Ocean food chains begin with phytoplankton
Phytoplankton • “Grass of the Sea” diatoms
Phytoplankton • The producers of the sea dinoflagellates
Zooplankton • “insects of the sea” • Primary consumers
Phyto- plankton Zoo- plankton fish Marine Food Chain
Marine Food Chain Blue Whale
Marine Food Chain Blue Whale feeds on krill
Blue whale annual migrations Marine Food Chain wintering grounds
Productivity • Measured by the concentration of phytoplankton
Productivity Open ocean is a “desert” Continental shelves more productive due to nutrients in runoff
Georges Bank spring plankton blooms Gulf Stream
Galapagos productivity upwellings stimulate productivity iron is the limiting nutrient adding iron sparks phytoplankton blooms a method of removing CO2 ???
Red Tides dinoflagellate blooms produce neurotoxins