Biotic Index and Feeding Type Calculations ∑ Abundance x Tolerance Values Family BI = Total Abundance Mayflies Family BI value General Feeding type Caddisflies Baetiscidae 3.0 Scraper Family BI Value General Feeding type Ephemeridae 4.0 Collector (gatherer) Hydropsychidae 4.0 Collector (filterer) Potomanthidae 4.0 Collector (gatherer) Philopotamidae 3.0 Collector (filterer) Polymitarcyidae 2.0 Collector (gatherer) Polycentropodidae 6.0 Collector/Shredder Neoephemeridae 2.0 Collector (gatherer) Psychomyiidae 2.0 Collector (gatherer) Caenidae 7.0 Collector (gatherer) Glossosomatidae 0.0 Sraper/Collector Ephemerellidae 1.0 Collector (gatherer) Hydroptilidae 4.0 Piercer/Scraper Tricorythidae 4.0 Collector (gatherer) Rhyacophilidae 0.0 Predator/Scraper Leptophlebiidae 2.0 Shredder Brachycentridae 1.0 Collector (filterer) Oligoneuridae 2.0 Collector (filterer) Lepidostomatidae 1.0 Shredder Heptageniidae 4.0 Scraper Limnephilidae 4.0 Scraper/Shredder Metretopodidae 2.0 Predator Phryganeidae 4.0 Shredder Siphlonuridae 7.0 Scraper Beraeidae 1.0 Collector (gatherer) Baetidae 4.0 Scraper Calamoceratidae - Shredder Helicopsychidae 3.0 Scraper Stoneflies Leptoceridae 4.0 Shredder/Collector Family BI Value General Feeding type Molannidae 6.0 Scraper/Predator Nemouridae 2.0 Shredder (Collector) Odontoceridae 0.0 Collector (gatherer) Taeniopterygidae 2.0 Generally a Shredder Sericostomatidae 3.0 Shredder/Collector Capniidae 1.0 Shredder Leuctridae 0.0 Shredder Pteronarcyidae 0.0 Shredder/Scraper Peltoperlidae 2.0 Shredder Perlodidae 2.0 Collector/Predator Chloroperlidae 1.0 Predator/Collector Perlidae 2.0 Predator From "Introduction to Taxonomy & Ecology of EPT" (NCSU Workshop, Funded by NCDENR & EPA 319) 6 Biotic Index Worksheet Family Identifications Mayflies Abundance Values Biotic Index Values Abundance x BI = Stoneflies Abundance Values Biotic Index Values Abundance x BI = Caddisflies Abundance Values Biotic Index Values Abundance x BI = Total Abundance1 = ∑ = ∑ Abundance x Tol. Values / Total Abundance Biotic Index Value = 1 Use this number when calculating the functional feeding groups also. From "Introduction to Taxonomy & Ecology of EPT" (NCSU Workshop, Funded by NCDENR & EPA 319) 7 Percent Composition of Functional Feeding Group Worksheets Family Total General Identifications Abundance Feeding Type Mayflies Stoneflies Caddisflies From "Introduction to Taxonomy & Ecology of EPT" (NCSU Workshop, Funded by NCDENR & EPA 319) 8 Site 1: Total % Composition Functional Feeding Abundance by (abundance by group Groups feeding group / total density) Total Shredders Total Scrapers Total Collectors (filtering) Total Collectors (gatherers) Total Predators Site 2: Total % Composition Functional Feeding Abundance by (abundance by group Groups feeding group / total density) Total Shredders Total Scrapers Total Collectors (filtering) Total Collectors (gatherers) Total Predators Site 3: Total % Composition Functional Feeding Abundance by (abundance by group Groups feeding group / total density) Total Shredders Total Scrapers Total Collectors (filtering) Total Collectors (gatherers) Total Predators From "Introduction to Taxonomy & Ecology of EPT" (NCSU Workshop, Funded by NCDENR & EPA 319) 9 .