biogeotest2

biogeotest2 - General Circulation Where are bands of...

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General Circulation Where are bands of sinking air located and what does this mean for the type of biome/landscape/plants that exist there? Subtropical, polar, it means it will be drier and (possibly) warmer What happens to air’s properties when it sinks? air has less moisture, higher temperature and less volume where are bands of rising air found? What does this mean for the type of biome/landscape/ plants that exist there? Midlatitudes, they’ll be wetter, more vegetation What happens to air’s properties when it rises? Temperature goes down, volume goes up and it releases moisture Photosynthesis and productivity Why are plants important? They take CO 2 out of the air and release O 2 , base of food webs, pharmeceuticals, aesthetics What is the chemical equation for photosynthesis? 6H 2 O + 6CO 2 + light = C 6 H 12 O 6 + 6O 2 Respiration? C 6 H 12 O 6 + 6O 2 = 6CO 2 + 6H 2 0 + Heat What is the ultimate source of all energy for life on earth? Light What leaf structures capture the sun’s energy? Chloroplasts
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What leaf structures allow CO2 to enter a leaf and O2 to exit? Stomata What wavelengths of light are most important with respect to photosynthesis (i.e. what color of light?) Red and blue Productivity: Gross, primary, and net Gross: total energy fixed by an ecosystem Primary productivity: efficiency of vegetation in “fixing” energy Net primary productivity: gross primary productivity – lost to respiration What factors best explain the patterns of primary productivity at a global scale? Wind patterns, amount of light received, precipitation
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This note was uploaded on 04/07/2008 for the course GEO 1403 taught by Professor All during the Spring '08 term at Minnesota.

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biogeotest2 - General Circulation Where are bands of...

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