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Energy Pyramid

Definition

noun

A graphical model that is shaped like a pyramid to show how the energy flows through a food chain, how the amount of energy is decreasing and becoming less available for organisms as it enters each trophic level, and how much of the energy in the ecosystem is lost to the atmosphere as heat.


Supplement

Since there is always a loss of energy at each trophic level the energy pyramid is always upright.


Synonym: Ecological Pyramid of Energy.
Compare: Biomass Pyramid.
See also: Pyramid of Numbers.


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Re:

... not everyone can afford to be big and mean, since it requires more energy and nutrients, so there has always been room for tiny, energy-efficient and simple forms of life. The food chain looks like a pyramid largely because of the same reasons (the few apex predators forming the ...

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by biohazard
Fri Nov 30, 2012 8:21 am
 
Forum: Evolution
Topic: Is evolution as simple as we think?
Replies: 38
Views: 21659

Re: I hate to do this.

... they don't create it themselves. 3. Which model shows the amount of energy lost during transference between trophic levels? Food Web True. A ... could include an explaination like the one above in your answer. 11. A pyramid of numbers is a model that shows the _____ at each trophic level ...

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by Larsa
Tue Nov 15, 2011 11:07 am
 
Forum: General Discussion
Topic: I hate to do this.
Replies: 3
Views: 22371

I hate to do this.

... organisms produce biomass? producers 3. Which model shows the amount of energy lost during transference between trophic levels? Food Web 5. In a ... producer level at every trophic level I picked the second one 11. A pyramid of numbers is a model that shows the _____ at each trophic level ...

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by biologyconfusesme
Mon Nov 14, 2011 7:39 pm
 
Forum: General Discussion
Topic: I hate to do this.
Replies: 3
Views: 22371

Re: Theories - Origin of Life

... ordered will tend to become disordered. Think of a carefully stacked pyramid of cannon balls. Anything you do to the cannon balls will tend to ... things besides the cannon balls small increase in order. There is the energy used by the person doing the stacking (Millions? of molecules of chemicals ...

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by BDDVM
Fri Mar 18, 2011 1:45 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 893158

Re: Surviving cannibals

... The reason is simple: living beings can only extract a fraction of the energy contained in their food, which explains that excrements still contain ... one kilogram of John Smith. This is why food chains have the shape of a pyramid when you consider biomass (or energy): it requires a lot of rabbits ...

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by DrD
Sat Jun 28, 2008 8:08 pm
 
Forum: Ecology
Topic: Surviving cannibals
Replies: 3
Views: 5397
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