Species Diversity

There are 2 450 sparrows in the Northern Forest. This is a description of

• diversity

• abundance

• richness

Community A has the same number of species as community B. However, in Community A 90% of the individuals belong to one species. In Community B the number of individuals are more evenly distributed between the different species. Which of the following conclusions are correct?

• Community A has higher species richness than Community B.

• Community B is more even than Community A

• Community A is more diverse than Community B

• Community B is more diverse than Community A

A population is

• a group of similar species in different areas

• a group of the same species in the same geographic area.

• a group of several species in the same geographic area

• a group of several species along with their abiotic factors in a small area.

What is the species richness for the following data collection

A: 25

B: 16

C: 12

D: 1

• 4

• 3

• 54

• cannot be determined

Identify the community that is most biodiverse.

• Site A

• Site B

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

• Species richness

• Relative species abundance

• Species percentage frequency

• Percentage cover

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

Identify the species richness of this community.

• 5

• 6

• 0.25

• 25

Species richness alone is not a good measure of biodiversity because:

• it does not take into account how many of each species are present

• it enables ecosystems with one dominant species to be differentiated from more evenly distributed ecosystems

• it only measure a particular species genetic biodiversity and can't compare to another species

• it only refers to species interactions and not genetic diversity

Why is genetic diversity important within a population?

• It ensures all individuals are identical, thus reducing competition

• It increases the population's ability to adapt to environmental changes

• It decreases the likelihood of diseases spreading within the population

• It makes the population more susceptible to genetic mutations