1. Biodiversity within plant based communities

2. By the end of this session you will:
Describe how you can investigate plant populations including estimating population number
Outline to a variety of ways in which biodiversity can be determined including Simpson’s Index of Biodiversity
Identify advantages/disadvantages of these measurements of Biodiversity

3. How do we know where to place the quadrat each time?
So How can we estimate the number of individuals within a plant population?
How do we know where to place the quadrat each time?
Identify the plant species and number of each within a quadrat x10
Use two tape measures as axis from 0 to 10 metres on each giving us an area of 100m2

4. What do we need to consider?
Validity
Reliability
Concordance and anomalies
Limitations

5. So what is Biodiversity?

6. How can we measure biodiversity?
Species richness
Species evenness

7. So why is Simpson’s Index of Biodiversity a better indication of Biodiversity?
Link summarising Simpson's Index of Biodiversity
IMPORTANT It is not the formula or which formula you are given, it is how to interpret the values from 0 to 1 that you need to get your head around 