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Dictionary » P » Pyramid of Numbers

Pyramid of Numbers

Definition

A graphical representation in the form of a pyramid showing the feeding relationship and the number of organisms at each trophic level.


Supplement

The pyramidal shape indicates that the number of organisms or species is largest at the bottom, and is narrowing towards the apex. The Pyramid of Numbers can be used to determine how the population of a particular species can affect another. It can also serve as a basis for the quantitative analysis of an ecosystem.

See also: Ecological Pyramid.


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Conditions for a stable ecosystem? (for a simulation)

... that speed. At that point herbivores are already dropping massively in numbers due to lack of food and surplus of predators, followed by the predators. ... so that no matter the amount of food they have, they won't overflow the pyramid (since this would ensure their own survival)? Or maybe this ...

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by Smig
Wed Dec 10, 2008 1:04 pm
 
Forum: Ecology
Topic: Conditions for a stable ecosystem? (for a simulation)
Replies: 11
Views: 3217

A Monkey's Uncle

... theory) works from the primitive to the complex. That would make it a pyramid and we place ourselves smilingly at the apex thinking it doesn’t ... an unsuccessful line of endeavour and other organisms would make up the numbers. - and?? (i must admit that this part is very funny imo, you are ...

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by narrowstaircase
Wed Mar 14, 2007 3:46 am
 
Forum: Evolution
Topic: A Monkey's Uncle
Replies: 26
Views: 5282

A Monkey's Uncle

... theory) works from the primitive to the complex. That would make it a pyramid and we place ourselves smilingly at the apex thinking it doesn’t ... an unsuccessful line of endeavour and other organisms would make up the numbers. While it is true that we were the trigger for the disaster that ...

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by JDavidE
Sat Mar 10, 2007 9:39 pm
 
Forum: Evolution
Topic: A Monkey's Uncle
Replies: 26
Views: 5282


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