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<br /> Table 1. Insect densi ties as annual mean of monthly means per square meter for Kick, Circular and <br /> Knapp Waters samples combined, October, 1979 through September, 1980. <br /> Dunn Creek Elkhorn Pi pe Cree k Fi s her Ri ver <br /> n=1O n=1O n=9 n=7 <br /> x(s. d. ) x(s.d.) x(s.d.) x(s. d.) <br /> Ephemeroptera 8 ,7 97 (7 ,77 8 ) 5,627 (3,079) 2,821(1,241) 4,443(1,784) <br /> Plecoptera 6(6) 14 (10) 15 (11) 670(119) <br /> Trichoptera 62(32) 953(799) 1,282(1,365) 1,657(944) <br /> Co 1 eoptera 7 (6) 49(29) 34(28) 446(234) <br /> Chi ronomi dae 15,803(6,905) 7,587(3,047) 11,061(6,263) 2,207 (395) <br /> Other Di ptera 1,560(1,417) 2,598(2,511) 1,970(2,309) 718(569) <br /> Other Invertebrates 1 ,877 (1 , 615 ) 1,658(698 ) 2,423(1,438) 535(251) <br />I TOTAL 28,112(8,394) 18,486(7,919) 19,606(9,259) 10,676(3,325) <br />...... <br />...... <br />I <br /> Percent Composition <br /> Ephemeroptera 31. 3% * 30.4% 14.4% 41. 6% <br /> Plecoptera 0.1% 0.08% 0.08% 6.3% <br /> Trichoptera 0.2% 5.2% 6.5% 15.5% <br /> Co 1 eopte ra 0.02% 0.3% 0.2% 4.2% <br /> Chi ronomi dae 56.2% 41. 0% 56.4% 20.7% <br /> Other Di ptera 5.5% 14. 1% 10.0% 6.7% <br /> Other Invertebrates 6.7% 9.0% 12.4% 5.0% <br /> <br />* Percentages do not always total 100% due to roundinq. <br />