Ecosystem Energy and Trophic Levels

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A model that shows the amount of energy available at each trophic level

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Energy pyramid

Front

According to the 10% rule, what happens to the other 90% of energy?

Back

It is lost as heat, used for metabolism, or not consumed.

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Trophic level with the most energy in an ecosystem

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Producers

Front

Organisms that recycle nutrients back into the ecosystem

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Decomposers

Front

Definition of "carrying capacity" of an ecosystem

Back

The maximum population size that an environment can sustain indefinitely

Front

Exponential growth graph

Back

A graph depicting exponential growth starts at the origin and rises steeply making the shape of the letter "J"

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Carrying capacity

Back

The maximum population size that an environment can sustain indefinitely.

Front

Logistic growth

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Occurs when the growth rate decreases as the population reaches carrying capacity.

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Limiting factors

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Environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem.

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Simplified Biodiversity Index

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Calculated by dividing the number of species by the total number of individuals.