Cycles_PatternsInBiospheres

Cycles_PatternsInBiospheres - transpiration - loss of water...

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Subject: Physical Geography Session: Chapter 10 -Cycles and Patterns in the Biosphere and Terrestrial Flora at 04:53 PM Biosphere all living things, plant and animal • processes and interactions within the biosphere and exceedingly intricate - energy, water, nutrients • biogeochemical cycling Biochemical Cycles 1. Flow of Energy • sun is basic source of energy • photosynthesis - production of organic matter by chlorophyll-containing plants and animals = energy fixed/made stable by plants (chemical energy) • takes CO2 and H2O and light to create C6H12O6 and O2 • only about 1% of solar radiation reaching a plant used for photosynthesis • rate is dependent on many things (amount of light received, etc) • solar radiation increased, rate of photosynthesis increases (but have upper limit) • as incident solar radiation increases, can make plant too hot (transpiration takes over)
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Unformatted text preview: transpiration - loss of water from plants, acts to cool plants (releases latent energy) respiration uses stored energy (carbs) to create CO2, H2O, heat net primary production (NPP) - difference between photosynthesis minus respiration measure is biomass (dry weight of organic material) 2. Hydrologic Cycle - most abundant single substance in biosphere is water medium of life processes source of their hydrogen - watery solutions dissolve nutrients residence - bound into plant and animal tissues transit - transpiration-respiration stream 3. Carbon Cycle - one of most basic elements of life continuous states of creation, transformation, decomposition transfer of carbon from CO2 to living matter then back to CO2 = main component...
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This note was uploaded on 11/19/2011 for the course GEOG 1002 taught by Professor Engstrom during the Fall '11 term at GWU.

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Cycles_PatternsInBiospheres - transpiration - loss of water...

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