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<br />Table 2. Insect biomass as annual mean of monthly means in lllbic centimeters <br /> per square meter for Kick, Circular and Knapp Waters samples <br /> combi ned. <br /> Dunn Creek Elkhorn Pi pe Creek Fi sher Ri ver <br /> n=lO n=10 n=9 n=7 <br /> xes. d.) x(s.d. ) xes. d. ) x(s.d.) <br />Ephemeroptera 16.4 (12.4) 11. 0 ( 7.4) 5.8 ( 3.7) 6.2 ( 3.8) <br />Plecoptera 0.01(0.03) 0.5 ( 0.5) 0.5 ( 0.6) 4.0 ( 2.7) <br />Tri c hoptera 1.2 ( 0.7) 6.8 ( 3.6) 5.9 ( 4.8) 6.3 ( 4. 5) <br />Chironomidae 9.6 ( 6.0) 5.5 ( 2. 1) 4.0 ( 2.4) 2.2 ( 1.4) <br />o t he r 11. 4 ( 4.4) 10.6 ( 4.4) 7.1 ( 4.4) 4.4 ( 2.5) <br />TOTAL 38.6 ( 20. 6 ) 34.4 (15.0) 23.3 (12.1) 23.1 (14.0) <br />percent Composition <br />Ephemeroptera 42.5% 32.0% 24. 9% 26.8% <br />Pl ecoptera 0.03 1.4 2. 1 17.3 <br />Tri choptera 3. 1 19.8 25.3 27.3 <br />Chi ronomi dae 24.9 16.0 17.2 9.5 <br />Other 29.5 30.8 30.5 19.0 <br /> <br />-12- <br />