Bio 102 - Final chapters

Bio 102 - Final chapters - 3 tropical 4. 1 widespread...

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Today 4-21 1. Cycles 2. Biomes 3. Aquatic ecosystems Seasonality matters too if the earth didn't tilt there would be no seasons 1. Atmosphere 1. Oxygen 21% 2. Nitrogen 78% 3. Atmospheric functions 1. Blocks UV, Xray, cosmic radiation 2. allows visible, IR light 1. warm earth, lower atmosphere 3. Air movement produced by atmospheric heat 4. Oceans 1. 75% earth's surface 2. continuous body of water 3. winds drive surface ocean currents 1. tend to move in same direction 2. close wise movement in northern hemisphere, counterclockwise - south hemisphere 4. Ocean/atmosphere interactions 1. tehre are many 2. Elnino-Southern Oscillation (ENSO) events 3. Rain Shadow 1. mountain range 1. moist air come up windward side, 1. gets lots of rain 2. leeward side gets desert, dry air 2. Biomes 1. terrestrial region 1. large 2. similar climate, soil, plants, animals 3. regardless of WHERE it is 2. temperature 3. precipitation 4. near poles, temperature most important 5. near equator, precipitation most important 6. boundaries between biomes intergrade: ecotone 7. the 9 biomes 1. 2 polar 2. 3 temperate 3.
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Unformatted text preview: 3 tropical 4. 1 widespread desert 8. Tundra 1. northernmost 2. frozen layer of subsoil (permafrost) 3. low, cold-adapted vegetation 4. very short growing season (agricultural) 9. Taiga 1. coniferous tress 2. cold winters, short growing season 3. mineral poor soil 4. Largest biome 10. Temperate rain forest 1. large conifers 2. very high precipitation 3. cool temperature year round 11. temperate deciduous forest 1. seasonal 2. many tress shed leaves in winter 3. high precipitation 12. temperate grassland & chaparral 1. lower precipitation 2. lower vegetation in height 3. fire risk, during period of drought 13. Chaparral 14. Tropical rain forest 1. high precipitation 2. high species richness 3. high productivity 15. tropical dry forest 16. savanna 1. similar to grassland 2. reduced precipitation 17. Desert 1. range of temperatures 2. ARID 1. very low rainfall, precipitation 3. scattered vegetation 3. Aquatic ecosystems 1. (4/23)...
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Bio 102 - Final chapters - 3 tropical 4. 1 widespread...

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