BISC 204 Lecture Notes - Lecture 15: Herbivore, Citric Acid Cycle, Light-Independent Reactions
13 Nov 2017
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Document Summary
All of the interacting parts of the physical and biological worlds . A spatially explicit unit of the earth that includes all of the organisms. Energy goes to humans instead: ecosystems ecology uses the laws of thermodynamics to constrain (place bounds on) study systems. (i) (ii) (iii) Conservation of energy: energy can be neither created or destroyed (but it can be transformed) Conservation of mass: mass can be neither created or destroyed (but it can be recycled) Open" systems are very difficult to study: placing these constraints on a study system enables you to use mass balance approaches to study the fluxes and cycling of energy and elements in ecosystems. Gross ppr rate at which energy is captured and assimilated in area. Measured as energy per unit area per unit time. Net ppr rate at which energy is assimilated and converted into producer biomass in an area (40%) Each bar represents net productivity of each trophic level.
