Simpsons Diversity Index To measure the diversity in
![Simpson’s Diversity Index To measure the diversity in an ecosystem Simpson’s Diversity Index To measure the diversity in an ecosystem](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-1.jpg)
![Simpson’s Diversity Index �Attempts to quantify the diversity (variety) of an ecosystem. �There are Simpson’s Diversity Index �Attempts to quantify the diversity (variety) of an ecosystem. �There are](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-2.jpg)
![Evenness �Evenness is a measure of the relative abundance of the different species within Evenness �Evenness is a measure of the relative abundance of the different species within](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-3.jpg)
![Species richness �Richness is a measure of the variety of the species �More species Species richness �Richness is a measure of the variety of the species �More species](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-4.jpg)
![The equation D = N(N - 1) n(n -1) D = diversity index N The equation D = N(N - 1) n(n -1) D = diversity index N](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-5.jpg)
![The Simpson Diversity Index �A high value of D suggests a stable and ancient The Simpson Diversity Index �A high value of D suggests a stable and ancient](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-6.jpg)
![Predict the value for D for the following: (high or low) �Tropical rainforest �Desert Predict the value for D for the following: (high or low) �Tropical rainforest �Desert](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-7.jpg)
![How to Calculate D: D = N(N – 1) n(n -1) 1. 2. 3. How to Calculate D: D = N(N – 1) n(n -1) 1. 2. 3.](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-8.jpg)
![Values for D �What is the lowest possible value? �What does a higher value Values for D �What is the lowest possible value? �What does a higher value](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-9.jpg)
![The values for D �The lowest possible value is 1. When there is only The values for D �The lowest possible value is 1. When there is only](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-10.jpg)
![Calculate the Simpson’s Diversity Index for each sample Comment on the evenness and richness Calculate the Simpson’s Diversity Index for each sample Comment on the evenness and richness](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-11.jpg)
![Answers �Sample One: 2. 99 �Sample Two: 1. 15 �Both have the same richness Answers �Sample One: 2. 99 �Sample Two: 1. 15 �Both have the same richness](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-12.jpg)
- Slides: 12
![Simpsons Diversity Index To measure the diversity in an ecosystem Simpson’s Diversity Index To measure the diversity in an ecosystem](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-1.jpg)
Simpson’s Diversity Index To measure the diversity in an ecosystem
![Simpsons Diversity Index Attempts to quantify the diversity variety of an ecosystem There are Simpson’s Diversity Index �Attempts to quantify the diversity (variety) of an ecosystem. �There are](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-2.jpg)
Simpson’s Diversity Index �Attempts to quantify the diversity (variety) of an ecosystem. �There are two components: Evenness Richness
![Evenness Evenness is a measure of the relative abundance of the different species within Evenness �Evenness is a measure of the relative abundance of the different species within](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-3.jpg)
Evenness �Evenness is a measure of the relative abundance of the different species within an area. �When the numbers of each type of species is even, the value for the Simpson Diversity Index will be larger.
![Species richness Richness is a measure of the variety of the species More species Species richness �Richness is a measure of the variety of the species �More species](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-4.jpg)
Species richness �Richness is a measure of the variety of the species �More species is “richer” so the value for the index will be higher.
![The equation D NN 1 nn 1 D diversity index N The equation D = N(N - 1) n(n -1) D = diversity index N](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-5.jpg)
The equation D = N(N - 1) n(n -1) D = diversity index N = total number of organisms of all species found n = number of individuals of a particular species
![The Simpson Diversity Index A high value of D suggests a stable and ancient The Simpson Diversity Index �A high value of D suggests a stable and ancient](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-6.jpg)
The Simpson Diversity Index �A high value of D suggests a stable and ancient site �A low value of D could suggest pollution, recent colonization or agricultural management. � The value of D indicates the richness and evenness of the species found within the area sampled.
![Predict the value for D for the following high or low Tropical rainforest Desert Predict the value for D for the following: (high or low) �Tropical rainforest �Desert](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-7.jpg)
Predict the value for D for the following: (high or low) �Tropical rainforest �Desert �A wheat field �A polluted river �A tall grass prairie
![How to Calculate D D NN 1 nn 1 1 2 3 How to Calculate D: D = N(N – 1) n(n -1) 1. 2. 3.](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-8.jpg)
How to Calculate D: D = N(N – 1) n(n -1) 1. 2. 3. 4. Record the numbers of each species Calculate n-1 for each species Find the total number of organisms, N Calculate the Simpson Diversity Index
![Values for D What is the lowest possible value What does a higher value Values for D �What is the lowest possible value? �What does a higher value](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-9.jpg)
Values for D �What is the lowest possible value? �What does a higher value indicate?
![The values for D The lowest possible value is 1 When there is only The values for D �The lowest possible value is 1. When there is only](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-10.jpg)
The values for D �The lowest possible value is 1. When there is only one kind of species. �This is a monoculture or an area that has been disturbed by pollution, a flood, or another big event �A high value for D indicates stability, complexity and an older ecosystem.
![Calculate the Simpsons Diversity Index for each sample Comment on the evenness and richness Calculate the Simpson’s Diversity Index for each sample Comment on the evenness and richness](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-11.jpg)
Calculate the Simpson’s Diversity Index for each sample Comment on the evenness and richness of each sample.
![Answers Sample One 2 99 Sample Two 1 15 Both have the same richness Answers �Sample One: 2. 99 �Sample Two: 1. 15 �Both have the same richness](https://slidetodoc.com/presentation_image_h2/9bcadc96d9bbc68bb8f4d7f599d8e8e4/image-12.jpg)
Answers �Sample One: 2. 99 �Sample Two: 1. 15 �Both have the same richness as there are three species in each area. �Sample One is more diverse because the species are more even.
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