Dictionary > 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.


You will also like...

Adaptive Radiation
Adaptive Radiation

The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..

New Zealand Fauna
New Zealand’s Unique Fauna

Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..

Birth Control and Contraception
Birth Control and Contraception

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Salmon jumping upstream in the river
Lotic Communities & Animals

A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

Biosecurity and Biocontrol
Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..