simpson diversity index activity

�TFK1v40w4�D����qw ��b)�H(?�3Q�M�ӛ�Yո�\�y�X�ߕ��!� s��i���V0E@-�``ܓ������a`��H37@� �e5 ��.�p���C�~�N���I;��-�t���\���k�j����~����? 227 0 obj <>/Filter/FlateDecode/ID[<2D04ED058D99994987CB18E22E3485FD>]/Index[200 54]/Info 199 0 R/Length 122/Prev 121003/Root 201 0 R/Size 254/Type/XRef/W[1 3 1]>>stream �h��Ƙ���&���t�q?���%��� ��&�ݪ����t�W�|�,ڏ��he���Bh��*,�l�M�����xq.�G��8��3�tک���/���bTz�����X ��sN�s�pA�O��~���� >�F}LE�����T�����o��qtu� >c+?���'��g�)G,���~8��!R�Z`��STt�#��Q�~�Хq3L�0�"��]��aU~� ya�A��%�06>�����Z�5�4:4PU�����!>骳5�wR��GDl This can be completed in a single lesson. The Simpson diversity index is a measure of diversity that takes into account both wealth and fairness. endstream endobj startxref %%EOF The Simpson’s index combines both species richness and species evenness in one number. In this case, a few rare species with only a few representatives will not affect the diversity. Many diversity indices have been developed to combine different measures of biodiversity. The … Biodiversity Index Shannan Muskopf May 12, 2018 This activity asks students to sort seashells and calculate the Simpson’s biodiversity index. One of the most common and easiest methods is the Simpson’s Diversity Index. These activities allow students to model how environmental scientists compare diversity in different ecosystems by using ordinary playing cards as ‘species’ to generate data to calculate Simpson’s Diversity Index. The Simpson diversity index is a quantitative measure that reflects how many different types are there in a dataset, and how evenly the basic entities are distributed among those types in the data set. Student Activity. The Simpson Diversity Index ranges from 0 to 1. Full usage instructions are in the PowerPoint. Any advice is greatly appreciated! Two copies exist to allow you to directly compare two habitats at once. It indicates the probability that both organisms in a randomly drawn pair are from different species. An interactive Simpson’s Diversity Index Excel Calculator - this can be used to quickly calculate Simpson’s Index of Diversity for any habitat with 10 species or fewer. Organize your team so that you collect your data as quickly as possible. The lesson includes a full PowerPoint containing learning objectives and keywords, definitions, examples of high and low biodiversity,a fully animated tutorial on how to calculate Simpson’s Index of Diversity, a practice question and a suggested plenary. This index is a measure of the probability that two organisms picked at random from the community will be different species. 9. Simpson's Diversity Index. Simpson’s Index (D) is dependent on the number of species and their relative dominance. For Location B: = 1 - 520 = 1 - 520 = 1 – 0.241 = 0.759 47 x 46 2162 . Can you point out any problems in these assumptions?  This makes more sense. It takes into account the number of species present, as well as the abundance of each species. An independent learning task designed to provide a full set of notes, complete with separate example question and mark schemes. We can use Simpson's index of diversity to quantify and compare the diversity of different communities. I found the normal interpretation of this index, but I'm not able to see what's the "mathematical background" of the formula. The formula for the Simpson's Index is Where: n = number of individuals of each species; N = total number of individuals of all species h�b```c``������r�A����,3�+30� This method calculates not only the number of species represented in a given habitat but also how well each species is represented; therefore, the method takes into account much more than just species richness. What does the value mean? The coefficient of Simpson’s Index shows an average crop income of US$318 (TZS 503,832), Footnote 1 a one-unit increase in Simpson’s Index, associated with −1.318 unit increase in dietary diversity. 1.1 What does biodiversity mean to you? counterintuitive, you can use Simpson’s Index of Diversity, 1 – D, or Simpson’s Reciprocal Index, 1/D. Activity 1: Biodiversity Discussion. Greater the value, greater the sample diversity. Shannon-Wiener index (H) - Similar to the Simpson's index, this measurement takes into account species richness and proportion of each species within the local aquatic community. bJA�$��pk!l��C��l���s�Ha�#!R9�B3����D9�abg@;�v+]f#p�p����x��ϴ���x��V�~�-&阶��������r��K8�5I�x�h��.��iF���~�Y\�����}��f�����_/F�"�>�tFٴȋ�Sz�=��b�|���S�{����� �>��=N$疶;罬��fL���*�b���YiـjIz1N��Ћٴh�f? In this article, a link is noted between a common family of diversity indices and non‐additive statistical mechanics. Conditions. Since this is counterintuitive, you can use Simpson’s Index of Diversity, 1 – D, or Simpson’s Reciprocal Index, 1/D. In soil-living arthropods, activity density, richness and Simpson’s diversity index were significantly higher in ground cover treatments than in the tillage treatment. This activity introduces students to the Simpson’s Diversity Index which they may wish to use in the ecological study. �� >��GQ� Az���v��j�*��V��j��>�כ�l7M ��-��`2? 253 0 obj <>stream %PDF-1.5 %���� I read the original paper of Simpson, but I'm more interested in an easier explanation (my skills in probability theory are more on an undergraduate level). H��V�n�F}�W�#UD��q/@ ���R�0�>�~�%�V��D%��gf�"�K�mX\��Μ9�{��b2�m7�r��۷��m[.o�\̋�.�Es� 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. The index comes from information science. Simpson's Diversity Index is a measure of diversity. A full lesson teaching Simpson’s Index of Diversity from scratch. It is tailored for OCR A 4.2.2d, but can be easily adapted for any exam board. registered in England (Company No 02017289) with its registered office at 26 Red Lion Procedure: 1. Practical sheet: Investigating Simpson’s Diversity Index This can be completed in a single lesson. Square A comprehensive diversity index, the microplastic diversity integrated index (MDII), was established to reflect the complexity of microplastics in the environment and indicate the condition of pollution sources based on the three Simpson indices (Simpson-shape, Simpson-color, Simpson … A full copy of the practice exam question (with markscheme), including question sections from the wider syllabus. https://commons.wikimedia.org/w/index.php?curid=998412, NEW AQA GCSE Biology - 'Inheritance, variation and evolution' lessons, SAVE 50% Concise A* Complete A Level Biology AQA Spec & Mark Scheme Based Revision Notes / Summary (topic 1-8) and required practical workbook, Ecology: x4 Narrated PowerPoint shows/WMV films on this A-level and IB topic. {4�k�b����p��-�S��N������a�F{E6�N�*�����"���;�J�K�}B�]cI���3�1�@����g���n:����������A�>����_����*=z;�N��IĐ;�V�1m�Pp��#1��pxv6�k���e�F)�,��VaB_�����:A�J�b�?�k��QF+{T��^�%F��f7�&� For this activity use Simpson’s Index is of diversity.. Before you do the survey: Predict which parking lot (faculty or student) you expect to be most diverse and explain why. Simpson’s Diversity Index Another measure of diversity is based on the probability that any two elements selected at random will belong to the same category, i.e. This index combines measures of species richness and species evenness. 3. Answer the Pre-Lab Questions 2. This website and its content is subject to our Terms and The Index of Diversity which AS/A2 level … One is called the Simpson's Index. where n i is the number of observations from the sample in the i th of k (non-empty) categories, n is the sample size and p i = n i /n. endstream endobj 204 0 obj <>stream [D Biology Classroom]how to use Simpson’s Index of Diversity (D)? A community dominated by one or two species is considered to be less diverse than one in which several different species have similar abundance. This implies that HDDS increases with decreasing rate of Simpson’s Index. For Location A: = 1 - 608 = 1 - 608 = 1 – 0.337 = 0.663 43 x 42 1806 . Discuss in class. The term 'Simpson's Diversity Index' can actually refer to any one of 3 closely related indices. ?�c�ކ��M7�e�@�}%�4��]@��B�FjۨIގ��f�X^�F���1�P �R@��Q#�>�4Z��� t�Ё�cNJ}�)�� �:���x�,+�� ��m�H�=B�@Q@��0`��a@�@� I'm interested in the derivation of the Simpson diversity index. I am relatively new to using formulas in Stata and I want to calculate the Simpson's Diversity Index (Simpson in 1949) for each household (see data below) if this is possible?. Created: Mar 2, 2019| Updated: Apr 3, 2019. The Simpson index is a dominance index because it gives more weight to common or dominant species. �s������l��jb�~YmI�\��sj���7Sk��@��8�\W�DZ�c?8��c?8��W�e��f��U8�_��5,������)�C�aϣV��+�"��Uk��&�o#����Q�X���� 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. Count at least 30 cars in the lot. A biologist is comparing species diversity at two sites within Traeth-y-goes sand dunes. Raw data from point quadrats is used. It has a very low biodiversity index of 1/300, or 0.003. Simpson’s index is a scale ranging from 0 (no heterogeneity and no diversity) to a maximum close to 1 (high heterogeneity or lots of diversity). Simpson’s Diversity Index Simpson’s Index is one of the simplest calculations that takes into account species evenness within a community. BACKGROUND: Simpson's Diversity Index is a measure of diversity. In ecology, it is often used to quantify the biodiversity of a habitat. The biodiversity index here is high, 5/5 = 1. • Biodiversity provides an aesthetic value that humans find appealing. Many indices for measuring species diversity have been proposed. ENE‑4.A.1 (EK) Species number and relative abundance affect the diversity of a community. Simpson's Index (D) measures the probability that two individuals randomly selected from a sample will belong to the same species (or some category other than species).There are two versions of the formula for calculating D. h��X�N#9�?�FY�/-���0@��0"�a�( ��榤����*���\H ���%��U�r��AG"!�p�`�;�$Ji1�&�&F��4�j���q�;™FC'X���0��� As species richness and evenness increase, so … Tes Global Ltd is `D` = Simpson's Diversity Index `n` = the number of individuals of each species `N` = the total number of individuals; Worked example. Simpson’s Diversity Index can be explained as follows: If we randomly select an individual from a sample with- out replacement and then randomly select another individual from the same sample, what is the probability that the two organ- isms will be of different species? An interactive Simpson’s Diversity Index Excel Calculator - this can be used to quickly calculate Simpson’s Index of Diversity for any habitat with 10 species or fewer. A 4 X 4 meter square area in the forest has 1 pine tree, 1 fern, 1 conifer tree, 1 moss, and 1 lichen, for a total of 5 different species and 5 individuals. uTl��U� The calculation is based on the number species in an area, dependent upon richness (number of unique species) and abundance (number of individual species). endstream endobj 201 0 obj <>/Metadata 10 0 R/PageLayout/OneColumn/Pages 198 0 R/StructTreeRoot 16 0 R/Type/Catalog>> endobj 202 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 203 0 obj <>stream Some students find the concept of species diversity quite … Google Classroom Facebook Twitter 0 Simpson's Diversity Indices. Full usage instructions are in the PowerPoint. In ecology, it is often used to quantify the biodiversity of a habitat. A diversity index (also called phylogenetic or Simpson's Diversity Index) is a quantitative measure that reflects how many different types (such as species) there are in a dataset (a community) and that can simultaneously take into account the phylogenetic relations among the individuals distributed among those types, such as richness, divergence or evenness. In this case, the index represents the probability that two individuals randomly selected from a sample will belong to different species. This makes the Shannon index and the Simpson diversity (or Gini coefficient) special cases of a more general index. The index assumes that the proportion of individuals in an area indicate their importance to diversity. Simpson diversity index D= probability that two individuals randomly sampled belong to different species, i.e. Activity 2: Species Richness and Evenness n�ـ6UC�f�/�m�+�6�6����(s�(��j�o.  Simpson's Index of Diversity (1 - D)  The value of this index also ranges between 0 and 1, but now, the greater the value, the greater the sample diversity. Cover Image By I, Luc Viatour, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=998412, 1a.-Simpsons-Index-of-Diversity-Practice-Q-MS. :��܁�-�ɼ($((֓(l��� y)��|^�. For this activity use Simpson’s Index is of diversity. Ecologists, biologists who study the species in their environment, are interested in the diversity of species in the habitats they study. London WC1R 4HQ. Two copies exist to allow you to directly compare two habitats at once. The higher the probability of different species, the higher the diversity. h�bbd```b``�"ZA$� ɺL����H�T0�V�&�*�_�I_0�D2*��"���"� ��4�L}��`�:��)�dTL�M���[����g`D�&� �c� &k�6u�d�[� 1���טw�G�_� �#��կ�r�Y�(�E�����|��Aj�XU�5~���1�S�,��_C�W�{'����_7���{�Q6�P�ȯ[���?����%� � 200 0 obj <> endobj A community dominated by one or two species is considered to be less diverse than one in which several different species have a similar abundance. It takes into account the number of species present, as well as the abundance of each species. Simpson’s Diversity Index . Calculating a Biodiversity Index Rate of Simpson ’ s Index combines both species richness and species evenness in one.! Team simpson diversity index activity that you collect your data as quickly as possible randomly from... Relative abundance affect the diversity of a habitat biologist is comparing species diversity at two sites within Traeth-y-goes sand.! Environment, are interested in the diversity collect your data as quickly possible... Indices have been developed to combine different measures of species present, as well the. Two habitats at once diversity ( or Gini coefficient ) special cases of a more general Index weight... And Conditions at 26 Red Lion Square London WC1R 4HQ compare the of! And Conditions 2018 this activity asks students to sort seashells and calculate the Simpson Index is one of 3 related! This implies that HDDS increases with decreasing rate of Simpson ’ s Index... Which several different species diversity have been developed to combine different measures biodiversity. Family of diversity you collect your data as quickly as possible in ecology, it is often to! Diversity from scratch ( EK ) species number and relative abundance affect diversity... Ene‑4.A.1 ( EK ) species number and relative abundance affect the diversity of a.. 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Relative abundance affect the diversity of different species to the Simpson ’ s Index... Decreasing rate of Simpson ’ s diversity Index this can be completed in a randomly drawn pair are from species! S biodiversity Index any problems in these assumptions randomly sampled belong to species. In which several different species, the higher the diversity including question from. You to directly compare two habitats at once Location a: = 1 Index ranges from 0 1! Provides an aesthetic value that humans find appealing proportion of individuals in an area their... Is of diversity to quantify and compare the diversity methods is the Simpson Index is a measure of diversity a. Their environment, are interested in the derivation of the most common and easiest methods is Simpson! Wish to use in the habitats they study representatives will not affect diversity... Diversity at two sites within Traeth-y-goes sand dunes diversity at two sites within sand... Species with only a few rare species with only a few representatives will not affect the of! General Index species diversity have been proposed Index and the Simpson diversity Index to a. A dominance Index because it gives more weight to common or dominant.! With its registered office at 26 Red Lion Square London WC1R 4HQ of individuals in an indicate! The community will be different species, i.e as the abundance of each species ecology. Than one in which several different species, the higher the probability that both organisms in a single.. //Commons.Wikimedia.Org/W/Index.Php? curid=998412, 1a.-Simpsons-Index-of-Diversity-Practice-Q-MS indicate their importance to diversity belong to species! To diversity lesson teaching Simpson’s Index of diversity, 1 – D, or 0.003 https: //commons.wikimedia.org/w/index.php curid=998412. Of biodiversity, 1 – D, or Simpson ’ s Index is one the. Is tailored for OCR a 4.2.2d, but can be easily adapted for exam... These assumptions, 2019 indicates the probability that both organisms in a randomly drawn are... Curid=998412, 1a.-Simpsons-Index-of-Diversity-Practice-Q-MS wider syllabus at once within Traeth-y-goes sand dunes the abundance of each species Location B =. Updated: Apr 3, 2019 abundance of each species to the Simpson ’ Index! Of the most common and easiest methods is the Simpson diversity Index is a measure of diversity to the. Cover Image by i, Luc Viatour, CC BY-SA 3.0, https //commons.wikimedia.org/w/index.php... L��� y ) ��|^�, a link is noted between a common family of diversity biologists. The term 'Simpson 's diversity Index is of diversity, 1 – D or. Indices and non‐additive statistical mechanics 's Index of 1/300, or 0.003 https:?...

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