BIO120H1 Lecture Notes - Lecture 13: 70Th Parallel North, 40Th Parallel North, Lapse Rate
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BIO120H1 Full Course Notes
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Resources= exhaustible, condition = not exhaustible and vary (gradients), organisms perform best in certain conditions. When gradients are at extremes, individual survival, growth and reproduction are not possible (lethal zones), when gradient is in the middle survival, growth and reproduction can thrive. Temperature, soil moisture, nutrients (n is most important then p, k), disturbance, herbivory, disease, pollinators, seed dispersers, mycorrhizal fungi. *same as terrestrial plants but add salinity, remove moisture, p is more important* Food + water, temperature, habitat quality, predation, disease. *same as terrestrial but add salinity and osmotic pressure* Temperature= function of latitude, seasonality= function of temperature, rainfall depends on atmospheric circulation, these determine biomes. Heated air cools as it rises, this is governed by adiabatic lapse rate (the rate at which atmospheric temperature decreases with increasing altitude in conditions of thermal equilibrium: https://www. youtube. com/watch?v=p-blgbkhso0 (saturated = wet) Air cools, water vapour condenses and therefore it rains near the equator.
