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TABLE 3 Relative Abundance of Plant Species or Taxa at Different Distances from the Green River at Low Flow' Percent of Sampling Points Occupied at Different Distances from the Riverd Distance (ft) All - Snecies or Taxonb Nc 0-4 ft 5-9 ft 10-19 ft 20-49 ft 50-99 ft 100-149 ft >149 ft Distances Mean Range Artemisia 99 0.00 1.23 0.00 8.49 12.63 1.10 4.86 6.37 74.6 7-325 Box elder 173 0.00 0.00 0.62 2.18 20.30 10.38 30.10 11.13 134.6 16-338 Canada thistle 82 0.00 1.23 3.73 9.47 4.46 9.84 0.00 5.27 61.2 8-149 Carex 118 3.70 6.17 1.86 7.28 5.45 19.13 9.22 7.59 86.5 0-177 Cattail 47 0.93 4.94 4.35 0.73 2.72 11.48 0.00 3.02 75.9 5-139 Common plantain 32 0.93 2.47 3.73 2.91 1.98 1.64 0.00 2.06 43.6 5-107 Common reed 30 1.85 3.70 6.21 2.91 0.74 0.00 0.00 1.93 25.6 0-79 Common spikerush 179 13.89 17.28 13.66 13.35 13.61 9.84 0.00 11.51 46.3 0-139 Coyote willow 128 1.85 1.23 1.24 7.77 13.61 19.13 0.49 8.23 75.1 3-151 Field horsetail 91 1.85 4.94 9.94 9.95 5.20 2.73 0.97 5.85 48.1 3-262 Giant whitetop 51 0.00 1.23 5.59 8.25 1.49 0.55 0.00 3.28 34.9 10-143 Golden aster 69 0.00 0.00 3.73 9.71 5.69 0.00 0.00 4.44 43.2 11-80 Grasses 727 7.41 34.57 35.40 49.03 44.80 52.46 75.24 46.75 93.7 2-330 to Juncus 274 6.48 17.28 16.77 1.9.66 23.51 26.78 0.49 17.62 59.2 3-159 Rabbitbrush 70 0.00 1.23 3.11 1.94 3.22 6.01 15.53 4.50 169.1 10-320 Scirpus 98 12.04 38.27 11.80 5.58 0.00 53.55 0.00 0.00 53.9 2-131 Scouring rush 247 1.85 11.11 22.36 19.66 14.85 15.85 14.56 15.88 70.8 3-318 Silverweed 65 0.00 6.17 7.45 7.28 3.22 1.64 0.97 4.18 43.8 7-153 Sow thistle 85 0.00 1.23 1.86 6.07 9.41 9.29 0.49 5:47 68.8 8-153 Stinking povertyweed 38 0.00 0.00 0.00 0.00 0.00 4.92 14.08 2.44 166.2 108-200 Tamarisk 110 1.85 2.47 3.73 10.68 2.72 18.03 5.83 7.07 79.2 5-180 Western goldenrod 203 1.85 14.81 16.15 19.66 10.89 16.94 3.40 13.05 55.6 5-172 Wild licorice 59 0.00 1.23 2.48 5_58 __ _ ___3_22 __ ___9_84 _0_00 __ ___3_79 __ ___68.4 10-131 Number of sampling p oints 108 81 161 412 404 183 206 1,555 - - Percent of sampling points 6.95 5.21 10.35 26.50 25.98 11.77 13.25 100.00 - - a Low flow = 800 cfs. b Only species or taxa with 25 or more observations are included. c N = number of sampling points where the species or taxon was observed. d Only transacts upstream of the Yampa River confluence are presented.