BIO120H1 Lecture Notes - Lecture 13: Wandering Albatross, Atmospheric Circulation, Horse Latitudes
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BIO120H1 Full Course Notes
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Evo eco more interested in the differences. Coarse global patterns temp and precip: latitudinal patterns. Conditions- are not exhaustible; ph, salinity, etc: **conditions vary across space and time; we envision gradients of conditions, **organisms perform best at certain levels (certain parts of gradients) Species have ranges of tolerance along environmental gradients. Everest death zone- o2 concentration 1/3 of sea level. Higher latitudes colder; seasonality function of temperature. Lower lats warmer; seasonality function of rainfall (wet/dry) Rainfall depend atmospheric circulation, offshore ocean currents, rain shadows: factors determine biomes, **at higher lats, light strikes @ lower angle, spread over more area. Air heats @ equator, tends to rise (elevator-like: it cools as it rises and water vapor condensed and make rain. Continual rising squeezes air away from equator and sinks. Lapse rate: depression of gas causes cooling. Other atmospheric cells interlock like a gear train: hadley cell ferrell cell polar cell.
