BSC 2011 Lecture Notes - Lecture 10: Nitrification, Nitrogen Cycle, Detritivore
14 Apr 2017
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Once its inorganic plants store it, when plant dies it drops leaves and it goes into litter fall pool, then decomposes then mineralized by bacteria then converted to inorganic form once again. Responsible for 90% of internal n cycling. Chemical conversion of organic matte into inorganic nutrients. Occurs when concentrations of no3- are high, o2 concentrations are low, and adequate supply of organic. N changes forms du to enzymatic biological oxidation reduction reaction. Occurs bc it is a source of energy for microbes and is a nutrient source of n for plants and microbes. Different forms of n can move to different pools within and outside the ecosystem. Not a lot of p in atmosphere. P enters ecosystem by weathering of rocks. P does not have a gas form and isn"t oud in atmosphere. Most of p used in ecosystems us recycled internally and stays in the system. P doesn"t undergo oxidation reduction reactions under most reactions.
