B

Distribution pattern

Frequency

Density

Cover

a) Regular pattern

40%

0.4 m-2

3.2%

b) Clumped pattern

40%

2.0 m-2

16.0%

c) Random pattern

60%

0.6 m-2

4.6%

True value

-

0.7 m-2

5.6%

Fig. 10.7. Influence of plant distribution on the estimation of a population's density, cover and frequency. Individuals within each population are arranged: (a) regularly, (b) in clumps, and (c) randomly. The quadrats are the same size and are randomly distributed within the population.

trees ha 1 and that species A makes up 25% of the trees.

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