BIO 3117 Lecture Notes - Lecture 7: Cyanobacteria, Fossil Fuel, Natural Selection
31 Jan 2018
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Document Summary
Unlike energy --> matter in recycled over and over again. Transport and transformation of chemicals, abiotic and biotic. Good example of cycling between inorganic and organic. Can be limiting --> important for primary productivity. Element in the smallest concentration is the limiting factor. When one increases over the point of limitation --> a new limiting element. Nitrogen and phosphorus more abundant in biosphere than other areas. In graph remember demand and supply are not related to the abundance (separate experiment. How much more of the thing exist in an animal not in the water (more in the algea by 1. 3x than the fresh water) Phosphorus is more abundant and nitrogen is limiting. Although abundant in atmosphere --> gas not usable 5th most abundant. Essential in many important molecule, essential, not available in soil or crust. Most of the transformation dependent on having bacteria available. Atmospheric to ammonia (atmospheric not usable by plants)
