Species: Andemat (Lemna minor)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2000 | 1 | 1 | 1 | 1 |
| 1995 | 1 | 1 | 1 | 1 |
| 1994 | 1 | 4 | 4 | 4 |
| 1992 | 1 | 1 | 1 | 1 |
| 1991 | 1 | 1 | 1 | 1 |
| 1990 | 1 | 1 | 1 | 1 |
| 1989 | 1 | 14 | 13 | 14 |
| Totalt alle år | 1 | 19 | 18 | 23 |
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Responsible editor: Doris Jorde