ecosystems and energy 1 st law of thermodynamics- energy cannot be created or destroyed 2 nd law of...
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Ecosystems and Energy
1st law of thermodynamics- energy cannot be created or destroyed
2nd law of thermodynamics- when energy is converted from one form to another, some energy is “lost” as heat, and dissipates into the environment
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The total amount of energy available to do biological work is decreasing over time, total energy is not decreasing
Increasing entropy (disorder) No energy conversion is 100% efficient
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The “Hustle and Flow” of Energy through Ecosystems
Detrivore and Decomposer- Both are decomposers- detrivores consume nutrients through a mouth. Saprobes release an enzyme that breaks down nutrients outside the body. They then absorb nutrients through their cell membrane/cell wall
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Can a food chain have an indefinite amount of interactions?
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Ecological Pyramids
Represent the relative energy values of each trophic level Pyramid of numbers- do not show amount
of energy transfer or biomass Pyramid of biomass- can be 90% reduction
of biomass at each level Pyramid of energy
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