Lemna and Daphnia Bioassay Results
Fall 2005
Image of Daphnia: © 2003 Fraunhofer-Gesellschaft, Lemna: From Department of Biology, Kenyon College website
The following are the data for the Lemna and Daphnia bioassays tabled by section number. See the notes regarding section 522 results.
Section 501: Monday 10 a.m.
502: Monday 1 p.m.
522: Tuesday 8 a.m.
| Replicate 1 | Replicate 2 | Replicate 3 | ||
| 501/502/522 | 501/502/522 | 501/502/522 | ||
| pH 3 | Lemna | 0/0/0 | 0/0/0 | 0/0/0 |
| Daphnia | 0/0/0 | 0/0/0 | 0/0/0 | |
| pH 5 | Lemna | 2/5/5 | 2/5/5 | 2/5/6 |
| Daphnia | 0/0/0 | 0/0/0 | 0/0/0 | |
| pH 7 | Lemna | 1/0/5 | 3/5/5 | 3/m/7 |
| Daphnia | 0/0/0 | 0/0/0 | 0/m/0 | |
| pH 10 | Lemna | 1/3/5 | 2/5/5 | 0/4/5 |
| Daphnia | 0/0/0 | 0/0/0 | 0/0/0 |
m - missing data Replicate details: Initially, each cup contained... 501: 2 Lemna, 5 Daphnia 502 & 522: 5 Lemna, 5 Daphnia
522: The following were notes that deviate from the procedure or were observations that other groups may not have had. These were important enough that they may need to be mentioned in the paper.
pH 5, Replicate 1 - The Daphnia and Lemna were in separate cups.
pH 7, R. 1 - Although 5 Lemna were placed in the cup 1 week prior, 7 individuals were found.
pH 7, R. 2 - Although 5 Lemna were placed in the cup 1 week prior, 12 individuals were found.
by John Cross