4-6 Biodiversity within a community

Question 1

What is biodiversity?

Answer 1

• Biodiversity is the variety of living organisms.

Question 2

What are the three ways to measure biodiversity?

Answer 2

• Species diversity is the number of different species and the number of different individuals in a community, it can be measured by simply counting the number of species present via methods such as random sampling.
• Genetic diversity is a measure of the genetic variation found in a particular species.
• Ecosystem diversity is the range of different habitats.

Question 3

What is the formula for the index of diversity?

Answer 3

• D=N(N-1)/SUMn(n-1)
• D = Diversity index
• N = Total number of organisms
• N= Total number of organisms of each species
• SUM= The sum of

Question 4

What are the techniques used to maintain biodiversity?

Answer 4

• Using hedgerows instead of fences.
• Growing different crops in the same area, known as intercropping.
• Reducing the use of herbicides and pesticides.
• Preserving wetlands instead of draining these for farming use.