Tuesday, 10 May 2011

4.2 Quadrats summary

Quadrats - estimating population size of an organism

Eg sand dune ecosystem - some populations -> community -> habitat

Fence - splits area into two regions
Grazed - ungrazed (cattle)
2 areas of ecosystem - study the populations in grazed/ungrazed
Then count the population

Quadrating
Quadrats based on squares - square grids
Up to 1m x 1m
Sample -> counting populations
and estimating the population size

Quadrats -> method of sampling different locations - populations can be compared

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