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<br /> I <br />Table 6. Mean, standard error (in parentheses), and number of samples (in brackets) of selenium (fJ-g/g dry I <br /> weight) in aquatic invertebrates and tadpoles collected from various sites at Ouray National <br /> Wildlife Refuge. I <br /> Location <br />Animal Sl S3 S4 S5 SR NR I <br />Dytiscidae Ad. 2.4 (-) 3.9 (-) 70.3 (2.4) 132.4 (9.1) <br /> [1] [1] [8] [2] I <br /> Lar. 2.1 (0) 1.6 (-) 8.5 (-) <br /> [2] [1] [1] I <br />Haliphidae 55.0 (-) 63.6 (28.2) <br /> [1] [2] I <br />Helodidae 114.1 (-) <br /> [1] I <br />Hydrophilidae <br /> Ad. 1.9 (0.8) 2.4 (-) 5.3 (2.0) 27.6 (7.8) 15.5 (-) I <br /> [2] [1] [2] [3] [1] <br /> Lar. 2.5 (0.6) 4.8 (0.3) 1.3 (0.2) 7.6 (-) 2.5 (-) <br /> [2] [2] [2] [1] [1] I <br />Snail 31.9 (1.4) 27.3 (0.1) <br /> [6] [2] I <br />Boatman 1.9 (-) 31.4 (11.2) <br /> [1] [2] I <br />Amphipod 26.1 (1.2) <br /> [2] I <br />Backswimmer 81.6 (3.5) 14.4 (-) <br /> [7] [1] <br />Damselfly nymph 1.9 (-) 109.7 (2.6) I <br /> [1] [3] I <br />Tadpole 168.7 (10.2) <br /> [5] I <br /> I <br /> 21 I <br /> I <br />