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• <br /> <br /> <br /> <br />.J <br />r <br />Table 7. Species list, mean density (number per m2), and diversity <br />values of ben[hic invertebrates collected from Fish Creek, <br />Roust County, Colorado, 16 July 1981. ~ <br />Organism <br />Oligochaeta <br />Hirudinea <br />Glossiphonidae <br />Placobdella sp. <br />Amphipoda <br />Talitridae <br />Hyalella azteca <br />Ephemeroptera <br />Baetidae <br />Baetis sp. <br />Ephemeridae <br />Ephemera sp. <br />Tricorythidae <br />Tricorythodes sp. <br />Leptophlebiidae <br />Paraleptophlebia sp. <br />Odonata <br />Aeshnidae <br />Coleoptera <br />Elmidae - adult <br />Zaitzevia sp. <br />Dubiraphnia sp. <br />Trichopcera <br />pupae <br />Hydropsychidae <br />Hydropsyche sp. <br />Cheumatopsyche sp. <br />Leptoceridae <br />Oecetis sp. <br />Brachycentridae <br />Brachycentris sp. <br />Hydroptilidae <br />Hydroptila sp. <br />Diptera <br />Chironomidae <br />pupae <br />Ceracopogonidae <br />Simuliidae <br />Simulium sp. <br />Stratiomyidae <br />Stratiomys sp. <br />Empididae - pupae <br />Anthiomyidae <br />Limnophora aequifrons <br />Polecypoda <br />22 <br />Sphaeriidae 22 <br />Total Number Taxa 6 17 <br />Total Number Organisms 4,678 18,492 <br />D 1.22 2.06 <br />-21- <br />TC .. J ~ ~_] .._~_.. ~~. _. <br />Station No. 1 <br />Pool Riffle <br />1,832 183 <br />108 <br />22 <br />Station No. 2 <br />Pool Riffle <br />3,922 140 <br />22 <br />11 <br />150 <br />11 <br />1,487 <br />11 <br />32 <br />172 <br />11 <br />2,058 <br />6,498 <br />97 . <br />11 <br />560 <br />129 <br />54 <br />11 <br />22 86 <br />11 <br />1,789 <br />6,616 <br />11 <br />11 <br />237 <br />2,177 2,522 <br />43 <br />11 <br />313 <br />2,650 7,284 <br />22 215 <br />22 <br />11 <br />11 <br />11 <br />11 <br />43 <br />5 17 <br />6,229 12,307 <br />1.06 2.01 <br />