Most biomass in plants and declines as you move up 2

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Most biomass in plants and declines as you move up 2. Aquatic Systems - The high consumption rate and the relatively short life spans of the primary producers (phytoplankton), sometime result in a biomass pyramid that is inverted relative to the energy pyramid
- Biomass of heterotrophs may be greater than the biomass of autotrophs but energy produced by autotrophs is still greater - Inverted biomass pyramids is greatest where productivity is lowest (ex: nutrient poor regions of the open ocean) - Reason you can support large animals with little biomass –phytoplankton turn over really quickly (get consumed but are replaced quickly; high supply) 13. Know what production efficiency is and be able to explain where energy in food goes. should also know rough estimates of production efficiency and be able to calculate it. Are homeotherms more or less efficient? You
14. Define ecological efficiency . Know estimated values of ecological efficiency and be able to calculate it.
15. Explain the junk food hypothesis with regard to Stellar sea lions .
16. Be familiar with top-down, bottom-up control and trophic cascades.

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