| Report Year: 2009 |
| Pierce Creek Lake, Page County |
| Zooplankton |
| | 6/9/2009 | 7/14/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Suborder/Genus | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) |
| Cladocera |
| Bosmina | 67.774 | 570.549 | 319.162 | 0.000 | 0.000 | 53.926 | 52.345 | 91.355 | 14.598 | 58.042 | 4.691 |
| Ceriodaphnia | 0.000 | 80.226 | 40.113 | 0.000 | 0.000 | 28.355 | 22.884 | 106.285 | 27.306 | 52.966 | 277.006 |
| Daphnia | 78.644 | 0.000 | 39.322 | 0.000 | 0.000 | 28.821 | 41.432 | 194.599 | 81.269 | 49.777 | 12.057 |
| Copepoda |
| Calanoida | 46.432 | 189.395 | 117.914 | 0.000 | 0.000 | 34.756 | 311.040 | 745.583 | 65.226 | 84.830 | 21.160 |
| Cyclopoida | 54.462 | 32.488 | 43.475 | 0.000 | 0.000 | 60.389 | 55.221 | 26.906 | 14.198 | 45.521 | 41.700 |
| Nauplii | 19.634 | 40.974 | 30.304 | 0.000 | 0.000 | 21.996 | 37.153 | 53.019 | 31.104 | 46.759 | 14.211 |
| Nauplii |
| Nauplii | 19.634 | 40.974 | 30.304 | 0.000 | 0.000 | 21.996 | 37.153 | 53.019 | 31.104 | 46.759 | 14.211 |
| Rotifera |
| Asplanchna | 7.813 | 0.000 | 3.906 | 0.000 | 0.000 | 7.095 | 2.732 | 20.270 | 0.731 | 2.309 | 0.000 |
| Brachionus | 0.000 | 12.815 | 6.408 | 0.000 | 0.000 | 0.213 | 2.325 | 7.026 | 0.677 | 11.245 | 1.007 |
| Conochilus | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.003 | 0.078 | 0.000 | 0.000 | 0.000 |
| Filinia | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 37.814 | 1.827 | 0.000 | 1.161 | 0.000 | 0.410 |
| Hexarthra | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.084 | 0.483 | 0.000 | 0.286 | 0.000 | 0.000 |
| Kellicottia | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.782 | 0.007 | 0.003 |
| Keratella cochlearis | 0.663 | 4.887 | 2.775 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.646 | 2.135 | 3.035 | 1.586 | 5.774 | 0.015 |
| Lecane | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.090 | 0.012 | 0.000 |
| Monostyla | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.085 | 0.000 |
| Polyarthra | 0.000 | 0.197 | 0.099 | 0.000 | 0.000 | 0.108 | 1.503 | 11.427 | 0.184 | 3.330 | 0.919 |
| Pompholx | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.052 | 1.385 | 1.808 | 0.000 | 0.000 | 0.000 |
| Trichocerca | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.108 | 1.486 | 0.034 | 0.000 |
| Total | 275.423 | 931.533 | 603.478 | 0.000 | 0.000 | 274.254 | 532.468 | 1263.500 | 240.683 | 360.689 | 373.180 |
| Large Suspension Feeders (%) | 29 | 9 | 19 | - | - | 19 | 22 | 24 | 42 | 26 | 52 |
| Taxonomic Richness | 7 | 8 | 8 | - | - | 10 | 10 | 11 | 11 | 11 | 9 |
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