4.3
Using quadrats to sample distribution of organisms in their habitat
Sample - random (no bias introduced)
- representative (large/as close to the true population as possible)
Setting up grid system across field
- Like xy coordinates of graph
Grids equal sizes
Use random numbers (generated online or from tables) - use for x, y coordinates
Draw quadrat is red
Find out area then count amount of organism
Representative sample - bigger = better
- 10 quadrats/10% of actual area
Make a table - find average
Find number of daisies per m²
This technique also used to compare populations with other areas
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