Quadrates

4.2 Recall the use of quadrats to estimate the population size of an organism in two different areas

Quadrats are a way of sampling different locations so that populations can be compared in the two different locations.

Sand dune ecosystem is made up of a number of populations which form the community and the habitat.

First thing to do to measure is to count by using a technique called quadrating.

A quadrat is made of squares made of any material and they form a square grid usually half a meter to half a meter.

It is used to sample eg. take samples from area A and count the number of individuals inside the grid. we will repeat this a number of times to get an estimate of the population size.

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