Sampling technique 1.5

Question 1

How is percentage cover calculated?

Answer 1

Use a quadrat with 100 squares. Represents 1%

Question 2

Outline the procedure to random sampling at 2 different sites

Answer 2

Use random number generator to get 2 sets of random coordinates (x,y)
Use two tape measures to create axis (10m)
Place quadrat at each coordinate, record % cover
Repeat 1-3 at different site

Question 3

How can the results from the 2 sites be tested?

Answer 3

Use a statistical test that compares 2 means

Question 4

In which area is the appropriate sampling method a transect?

Answer 4

Where a correlation between abiotic variable and ecological gradient exists

Question 5

Which statistical test would be suitable for correlating results from transect line?

Answer 5

Spearman’s rank

Question 6

What is abundance?

Answer 6

Number of different species present in a habitat

Question 7

What is abundance affected by?
Examples?

Answer 7

Abiotic and biotic factors
Ab - temperature, light intensity
B - competition, disease

Question 8

What are the two types of transect lines?

Answer 8

Line transect - organisms that touch the transect line
Belt transect - quadrats placed at regular intervals along transect line

Question 9

What do a belt transect allow to be estimated?

Answer 9

Density, % frequency, % area cover