4. Simpson's Diversity

The number of different types of species in an area refers to:

• Species richness

• Relative species abundance

• Species percentage frequency

• Percentage cover

Which site has greater relative species abundance

• Site A

• Site B

Percentage cover is useful when

• species are difficult to count (such as grass)

• species are easy to count (such as rabbits)

• quadrats are unable to be used

• species move around a lot

A value closer to _____ denotes good biodiversity (from the Simpson's Diversity Index)

• 1

• 100

• 10

• 0

Site 1 has a Simpon's Diversity Index of 0.81 and site 2 has 0.43. Choose the correct statement.

• Site 1 is more biodiverse than site 2

• Site 2 is more biodiverse than site 1

• You cannot compare the biodiversity of two different sites

• These numbers are qualitative and therefore more data is required to compare both sites

What are the three types of biodiversity?

g______, e________, s______

Write all three words separated by spaces and commas.

(a)  

Calculate the Simpsons biodiversity index of the community below correct to one decimal place (use pen and paper to draw a table)

Sea holly: 2

Sand Couch: 8

Sea bindweed: 1

Sporobolus pungens: 1

Echinophora spinosa: 3

Total: 15

(a)  

Calculate the Simpson's biodiversity index of the following community of organisms (rounded to two decimal places):

Species A: 15

Species B: 12

Species C: 2

Species D: 1

Species E: 3

(a)