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I 25 I I Table 6. Density of macroinvertebrates (#/ft2) in the Green River at three stations, May - September, 1979 (n = 3) . I ." UPPf R 4110 5/2J 6115 7/19 8117 9/29 T... STATlOl S.D. t S.D. S.D. S.D. S.D. S.D. t 01. lGOCItAfTA .33 .51 3.0 2.0 DIPTfRA 0.1 ron..ld.. ZJ 8.9 2.3 2.3 5.3 2.5 94.7 12.9 102.1 69.8 127 SIl.S PUllae 5.3 6. I 2. J 1.8 1.6 2.9 I Sh'ul1d.. 1.0 1.7 5.3 2.3 .7 1.2 flll>ldld.. .67 1.15 0011 chopodld.t. 2 1.7 .33 .58 Cor. topogonl d.. 1.3 1.5 Umo.hor. (.dult) .33 .58. I ClllfDPlfRA (ElIl1d.t.) 1!.!.ill!!! .3 .6 ~ .3 .6 ~ I ~ .5 .9 1.3 2.3 P1.fCOPTfRA ha.or" !!!llti!!! 2.3 2.5 .33 .58 .3 .6 Sa..lo ..roJ1olo .3 .6 ~~ 1.3 2.3 I IsoQenoi des e 1 onQa t~ .3 .6 hOQ.noides ~ for1, Instor 2.7 4.6 2.0 3.5 fMPIIEPEROPTfRA I a..tls .33 .58 4.7 2.5 53.3 J6.2 9.9 4.3 24.3 6.1 C""rote",.s 1.7 1.3 Eph~relll 11\!r"'Ifth 34 25.6 .67 .58 4.0 4.0 .3 .6 .7 1.2 !!!!.!..!:!l..! 11 be r tI",. 705.3 363.1 12.0 7.8 4.7 6.4 Trl corythod., I 73.3 32.3 36.4 30.5 12.0 13.9 I Tr1co~thode' 11 8.5 7.1 honych i I 9.3 10.1 ~ ~ 8.0 10.6 .7 .6 mt"'.u, .1brlqhtl [Pharon .!..!.!!.!!! 14.7 6.1 6.9 3.2 I H.pt4gonlld.t. Me~t."en1J 1.33 1.53 .3 .6 24.0 8.0 2.5 1.3 1..7 6.6 Rhlt!'lroQerll .33 .58 TRICIIOP7fRA I Brtchf'centru! .7 1.2 82.7 84.9 24.0 41.6 20.3 32.6 Cheutr'.a toos Y'chf 1.0 1.0 4.0 1.0 H,drop,ychUu (forl, 9.3 16.1 HY'd'r-oosYCI'u! lnsUr) 1.67 2.9 2J2 107.6 7.3 7.0 39.0 32.7 Hydrootl1. 2.3 4.0 .7 1.2 I 2m!!! 2.3 2.1 MISCfLLANEOUS fhh 2.6 Acorl 14.7 14.0 15.6 13.8 5.0 8.7 I hoptera ~It. .33 .58 HNlptel"'1 ~ 1.0 1.0 Co 11...,0 1. .5 .9 I l~idooten Par""....ract h .3 .6 OdoMta ODh;OOOl'ltlrtu'S l!..r~ ... --............ --......... --...... - -... - -.......- -- --......... ---- --... -- - ......... -........................ --... --............ -- -----... - ----... - -- - -... -_......- --- -- -- -- -...... --......... -- -... I Tot.1 11.63 7.92 18.2 1305.6 244.6 26'.J I I