Calculating Simpsons Index of Biodiversity Exercise - A-level Biology . A worksheet to designed to help scaffold calculating the AQA species diversity index. The Simpson Diversity Index ranges from 0 to 1. One is called the Simpson's Index. Activity 2: Species Richness and Evenness Greater the value, greater the sample diversity. In ecology, it is often used to quantify the biodiversity of a habitat. The name 'Simpson's Diversity Index' is often very loosely applied and all three related indices described above (Simpson's Index, Simpson's Index of Diversity and Simpson's Reciprocal Index) have been quoted under this blanket term, depending on author. Simpson's Index = 1 - [0 .1225 + 0.16 + 0.0625 ] Simpson's Index = 1 - [0.345] Simpson's Index = 0.655 Problems: Tables to organize the data needed to calculate Simpson's Index are found on the last page of this exercise. After being led through a derivation of Simpson’s Diversity Index, students then apply the equation to a data set on their own. The range is from 0 to 1, where: High scores (close to 1) indicate high diversity. Simpson’s diversity index (SDI) measures community diversity. A brief exercise using coral reef photographs and a fish identification chart to calculate a Simpsons Index of Biodiversity. Calculate Simpson's index for the community pictured below: . Simpson’s diversity index (SDI) measures community diversity. Simpson's Index of Diversity (1-D) Simpson's Reciprocal Index (1/D) Simpson's Index (D) Uses the relative abundance of different species Gives probability that any 2 individuals drawn at random from a large community belong to a different species Need: number of different species and number of times each was found . The samples are those used in the previous worksheet (Similarity and Dissimilarity) ? and equitability (E). Simpson's Diversity Index is a measure of diversity which takes into account the number of species present, as well as the relative abundance of each species. Download the worksheet. At the end, stu-dents may discuss whether their results support their original hypotheses. Simpson's Diversity Index: Measuring Biodiversity Maintaining biodiversity is important for a variety of reasons: Diverse communities are generally less susceptible to perturbation (disturbance) than similar but less diverse communities. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Simpson’s Diversity Index . Activity 1: Biodiversity Discussion. Many diversity indices have been developed to combine different measures of biodiversity. Although it’s commonly used to measure biodiversity, it can also be used to gauge diversity differences in populations in schools, communities and other locations. diversity index (H) accounts for species abundance by calculating the proportion of individuals of each species compared to the total number of individuals in the community (P i). For Location A: = 1 - 608 = 1 - 608 = 1 – 0.337 = 0.663 43 x 42 1806 . 2. Indices of Diversity. 1. Low scores (close to 0) indicate low diversity. The range is from 0 to 1, where: High scores (close to 1) indicate high diversity. It takes into account the number of species present, as well as the abundance of each species. Find simpsons diversity index lesson plans and teaching resources. Simpson’s Diversity Index, which uses principles of probability to determine objectively which area has the greater biodiversity. Classroom Resource Gorongosa: Measuring Biodiversity! Quickly find that inspire student learning. 1.1 What does biodiversity mean to you? Recently, this index has fallen out of favor because it doesn’t take into account habitat specific parameters required by specific species. Some of the worksheets for this concept are Lesson 3 biodiversity basics, The wild classroom biodiversity, Activity brief ecology and simpsons diversity index, Quantifying biodiversity, Student handout 1b biodiversity work, Invertebrate biodiversity work, Lesson, Teacher guide biodiversity in an estuary. Species number and relative abundance affect the diversity of a community. In this case, a few rare species with only a few representatives will not affect the diversity. We can use Simpson's index of diversity to quantify and compare the diversity of different communities. Community 1 contains 10 species, with 91 individuals of the first species, and 1 individual of each of the remaining species. Simpson's Diversity Index is a measure of diversity. View fullsize. Links to FIsh ID PDF and Question Sheet and Reef photos. Community 2 contains only 5 species, with 20 individuals of each. Index Of Diversity - Displaying top 8 worksheets found for this concept.. ten species and their abundance. The single spreadsheet gives the calculation for Simpson?s Index (D) and Shannon-Weiner (H?) View fullsize. You could not and no-one else going like ebook stock or library or borrowing from your friends to approach them. It is therefore important to ascertain which index has actually been used in any comparative studies of diversity. Discuss in class. - Inverse Simpson index is the effective number of types that is obtained when the weighted arithmetic mean is used to quantify average proportional abundance of types in the dataset of interest. Use the Simpson’s diversity index to determine which of the following three communities of 100 individuals is most diverse. Any values above 0.5 usually indicate a relatively diverse population. 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