Energy Flow

nutrients “cycle”
energy “flows” from sun to ecosystem and leaves as heat
rules of thermodynamics
-energy in universe is constant
-energy is neither created or destroyed
-energy changes form through organisms
-not 100% efficient
visible light
-usable for energy
-Photosynthetically Active Radiation (PAR)
energy transfer
Gross primary production (plants) – respiration = Net primary production – (herbivore) egestion, assimilation, respiration = NSP – (carnivore) egestion, assimilation, respiration = NTP
primary producer -> primary consumer -> secondary consumer
plants=autotroph
animal=heterotroph
-energy boxes decrease rapidly
trophic pyramid and biological magnification
-energy decreases and toxins increase rapidly up the pyramid