Tuesday, 10 May 2011

4.2 Quadrates

Quadrates = Method of sampling different locations within an ecosystem, to compare respective population sizes.

Sand Dune Ecosystem (for example) --> Community / Habitat, split by fence

--> Grazed (A)
--> Ungrazed (B)


Counting population (Quadrating): Estimate of population size 
    Using squares (1m x 1m)
    Take sample of population using square grid
    Count number of organisms

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