TABLE 2.
Results of the first efficacy study with anthraquinone-59
| Measured variable | Value for limnocorral treatment (μM) (n = 3) ofa:
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0
|
0.1
|
0.3
|
1.0
|
|||||||||
| 0 h | 16 h | % Changeb | 0 h | 16 h | % Changeb | 0 h | 16 h | % Changeb | 0 h | 16 h | % Changeb | |
| Chlorophyll a levels (μg/liter) | 102.5 (a) | 111.3 (a) | +8.6 | 97.2 (a) | 98.6 (a) | +1.4 | 99.9 (a) | 54.1 (b) | −45.8 | 95.5 (a) | 46.2 (c) | −51.6 |
| No. of O. perornata filaments/ml | 2,595 (a) | 3,056 (a) | +17.8 | 2,941 (a) | 2,076 (b) | −29.4 | 3,056 (a) | 1,442 (b) | −52.8 | 2,076 (a) | 1,326 (b) | −36.1 |
| No. of A. circinalis filaments/ml | 980 (a) | 1,038 (a) | +5.9 | 807 (a) | 865 (a) | +7.2 | 1,211 (a) | 634 (a) | −47.7 | 1,384 (a) | 0 (b) | −100 |
| Amt of green algae (natural units/ml) | 1,326 (a) | 1,788 (a) | +34.8 | 1,442 (a) | 2,018 (a) | +39.9 | 1,326 (a) | 1,384 (a) | +4.4 | 923 (a) | 1,269 (a) | +37.5 |
| MIB levels (ng/liter) | 2,422 (a) | 1,568 (a) | −35.3 | 2,249 (a) | 1,402 (a) | −37.7 | 2,581 (a) | 535 (b) | −79.3 | 2,470 (a) | 892 (c) | −63.9 |
| Geosmin levels (ng/liter) | 258 (a) | 80 (a) | −69.0 | 208 (a) | 101 (b) | −51.4 | 317 (a) | 77 (a) | −75.7 | 286 (a) | 44 (c) | −84.6 |
a
For each group of measured data, means (n = 3) on the same day with the same letter are not significantly different (P ≤ 0.05) based upon LSD values.
b
Change is from time 0 to 16 h.