| Report Year: 2009 |
| Diamond Lake, Poweshiek County |
| Zooplankton |
| | 6/16/2009 | 7/20/2009 | 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 | 2.596 | 30.460 | 16.528 | 6.472 | 1.537 | 20.024 | 0.000 | 0.856 | 1.247 | 0.000 | 1.005 |
| Ceriodaphnia | 0.000 | 23.041 | 11.521 | 4.090 | 0.000 | 31.263 | 0.000 | 0.000 | 0.466 | 0.000 | 0.000 |
| Daphnia | 24.087 | 5.493 | 14.790 | 4.939 | 32.137 | 20.934 | 182.413 | 10.165 | 6.859 | 37.045 | 4.679 |
| Copepoda |
| Calanoida | 0.000 | 0.000 | 0.000 | 6.988 | 18.831 | 14.394 | 8.199 | 4.871 | 8.849 | 11.126 | 8.909 |
| Cyclopoida | 25.257 | 36.269 | 30.763 | 21.445 | 16.463 | 54.137 | 26.347 | 32.752 | 2.115 | 16.422 | 10.295 |
| Nauplii | 9.264 | 82.665 | 45.965 | 5.246 | 4.078 | 10.657 | 15.086 | 51.299 | 8.520 | 10.721 | 7.745 |
| Nauplii |
| Nauplii | 9.264 | 82.665 | 45.965 | 5.246 | 4.078 | 10.657 | 15.086 | 51.299 | 8.520 | 10.721 | 7.745 |
| Rotifera |
| Asplanchna | 0.000 | 0.000 | 0.000 | 6.027 | 0.002 | 0.000 | 1.451 | 0.000 | 0.000 | 0.027 | 0.000 |
| Brachionus | 0.000 | 11.187 | 5.593 | 2.105 | 0.733 | 10.401 | 14.472 | 64.999 | 9.721 | 0.000 | 0.572 |
| Conochilus | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Filinia | 0.000 | 0.000 | 0.000 | 0.007 | 0.000 | 0.000 | 0.528 | 1.290 | 0.292 | 0.000 | 0.000 |
| Kellicottia | 0.000 | 0.047 | 0.024 | 0.000 | 0.005 | 0.002 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella cochlearis | 0.250 | 0.398 | 0.324 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella | 0.000 | 0.000 | 0.000 | 0.526 | 0.650 | 0.646 | 0.464 | 9.324 | 1.160 | 0.155 | 0.158 |
| Lecane | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.011 | 0.012 | 0.000 |
| Monostyla | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.006 | 0.000 | 0.000 | 0.000 | 0.013 | 0.000 |
| Polyarthra | 0.000 | 0.000 | 0.000 | 0.266 | 0.519 | 1.561 | 2.175 | 0.117 | 0.000 | 0.299 | 0.157 |
| Pompholx | 0.000 | 0.000 | 0.000 | 0.441 | 0.120 | 0.229 | 0.091 | 0.000 | 0.000 | 0.000 | 0.000 |
| Trichocerca | 0.000 | 0.000 | 0.000 | 0.016 | 0.339 | 0.019 | 1.262 | 0.013 | 0.191 | 0.000 | 0.000 |
| Total | 61.453 | 189.560 | 125.507 | 58.569 | 75.414 | 164.272 | 252.487 | 175.686 | 39.431 | 75.821 | 33.520 |
| Large Suspension Feeders (%) | 39 | 15 | 27 | 20 | 42 | 34 | 28 | 8 | 29 | 45 | 10 |
| Taxonomic Richness | 5 | 8 | 7 | 9 | 10 | 10 | 8 | 5 | 7 | 6 | 7 |
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