Data for Stream with NO POLLUTION Enter CLASS Data for the Total Number of Organisms for each Taxon (Column B) Total Taxon - Invertebrate Data Only Taxon Biotic Taxon Biotic Calculation for Simpson's Organisms Index Index Value Species Diversity Index N(N-1) value Trichoptera - Caddisflies - Variable 6 (Assume 50/50 shredders/predators) 2 12 0.006036217 4970 Ephemeroptera - Mayflies - Variable 4 2 8 0.002414487 Plecoptera - Stoneflies - Shredders 9 1 9 0.014486922 Coleoptera-Riffle Beetle Larvae - Scrapers 1 2 2 0 Coleoptera - Water Penny Beetle Larvae - Scrapers 5 4 20 0.004024145 Gastropoda - Gilled Snails-Scrapers 0 3 0 0 Megaloptera - Dobsonflies - Predators 3 4 12 0.001207243 Diptera - Crane Flies - Shredders 4 4 16 0.002414487 Odonata - Dragonflies - Predators 7 4 28 0.008450704 Decapoda - Crayfish - Predators 3 6 18 0.001207243 Isopoda - Sow bugs - Omnivores 5 8 40 0.004024145 Aquatic worms-Nematoda - Deposit Feeders 2 9 18 0.000402414 Diptera - Black Flies - Filter Feeders 3 5 15 0.001207243 Chironomidae - Midges - Omnivores 2 6 12 0.000402414 Annelida - Leeches - Fluid Feeders 6 7 42 0.006036217 Gastropoda - Lung Snails - Scrapers 11 7 77 0.022132797 Shred Scrap Filter Fe Fluid Fe Deposit Omini To *Excluded from Functional Index Calculation Total organisms for all taxa, N= Total Biotic Simpson's Species Value for all Diversity Index Value for taxa, E= D 71 329 0.07 Calculate using values above for E and N + Calculate using relative abundance of relevant organisms, see lab manual Biotic Index Score (E/N) % EPT Score Simpson's Species Diversity Index (1-D) Simpson's Functional Diversity Index (1-D) 0.93 0.81

How do I calculate the BIOTIC INDEX SCORE and % EPT SCORE?