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1 1 Elkhead Creek Site #2 Sample Mean ni*LOGni Count TV FBI 13 Sept. 95 1 2 3 Acentrella insignificans 3 4 2.33 0.86 1 4 0.0281 Acerpenna pygmaea 1 1 0.67 -0.12 1 4 0.0080 Baetis tricaudatus 13 9 6 9.33 9.05 1 4 0.1126 Fallceon quilled 4 4 3 3.67 2.07 1 4 0.0442 Ephemerellidae sp. 1 2 1.00 0.00 1 1 0.0030 Ephemera simulans 1 1 2 1.33 0.17 1 4 0.0161 Heptagenia sp. 1 0.33 -0.16 1 4 0.0040 Rhithrogena sp. 30 55 11 32.00 48.16 1 4 0.3859 Choroterpes sp. 7 3 5 5.00 3.49 1 2 0.0302 Paraleptophlebia sp. 12 21 12 15.00 17.64 1 2 0.0905 Tricorythodes sp. 8 15 11 11.33 11.95 1 4 0.1367 Capnia sp. 1 2 2 1.67 0.37 1 1 0.0050 Suwallia sp. 14 26 23 21.00 27.77 1 1 0.0633 Perlidae sp. 1 2 1.00 0.00 1 1 0.0030 Helicopsyche borealis Cheumatopsyche sp. 51 95 14 53.33 92.11 1 4 0.6432 Hydropsyche occidentalis 7 6 1 4.67 3.12 1 4 0.0563 Neotrichia sp. 3 1 1.33 0.17 1 4 0.0161 Oecetis sp. 33 29 17 26.33 37.41 1 4 0.3176 Polycentropus sp. Petrophila Orthocladlinae 48 47 33 42.67 69.55 1 6 0.7719 Tanypodinae 18 21 29 22.67 30.72 1 6 0.4101 Chironominae 22 12 18 17.33 21.47 1 8 0.4181 Simulium sp. 1 1 0.67 -0.12 1 6 0.0121 Hemerodromia sp. 1 0.33 -0.16 1 6 0.0060 Hexatoma sp. 6 2 4 4.00 2.41 1 6 0.0724 Ceratopogonidae 2 0.67 -0.12 1 6 0.0121 Microcylloepus sp. 15 18 11 14.67 17.11 1 4 0.1769 Optioservus sp. 1 1 0.67 -0.12 1 4 0.0080 Zaitzevia parvula 3 7 10 6.67 5.49 1 4 0.0804 Ambrysus mormon 2 7 5 4.67 3.12 1 4 0.0563 Ophiogomphus severus 9 3 7 6.33 5.08 1 1 0.0191 Hydracarina sp. 4 14 13 10.33 10.48 1 8 0.2492 Ancylidae 13 4 6 7.67 6.78 1 4 0.0925 Physa sp. 1 0.33 -0.16 1 8 0.0080 Pisidium sp. 1 0.33 -0.16 1 8 0.0080 Dugesia sp. Oligochaeta 1 0.33 -0.16 1 10 0.0101 Totals 334 413 248 331.67 425.29 35 4.37 Shannon Weaver Diversity 4.11 Shannon Weaver Evenness 0.80 1 Appendix B Page 2