Site: Østernvannet
| Species | Scientific name | 1990 | 1994 |
|---|---|---|---|
| Aeshna sp. | 1 | ||
| Ankistrodesmus sp. | 2 | ||
| Brasmegras | Isoëtes sp. | 1 | |
| Chaetoceros sp. | 1 | ||
| Chroococcus sp. | 2 | ||
| Closterium sp. | 2 | ||
| Limnephilus sp. | 1 | ||
| Melosira sp. | 2 | ||
| Merismopedia sp. | 2 | ||
| Oscillatoria sp. | 2 | ||
| Peridinium sp. | 1 | ||
| Spirulina sp. | 2 | ||
| European perch | Perca fluviatilis | 1 | |
| Bukkeblad | Menyanthes trifoliata | 1 | |
| Cloeon dipterum | 1 | ||
| Cordulia aenea | 1 | ||
| Cymatia bonsdorffii | 1 | ||
| Demicryptochironomus vulneratus | 1 | ||
| Dinobryon bavaricum | 2 | ||
| Dinobryon sociale | 2 | ||
| Elakatothrix gelatinosa | 1 | ||
| Flaskestarr | Carex rostrata | 1 | |
| Glyphotaelius pellucidus | 1 | ||
| Gulldusk | Lysimachia thyrsiflora | 1 | |
| Kattehale | Lythrum salicaria | 1 | |
| Laccobius minutus | 1 | ||
| Liten vannløper | Gerris lacustris | 1 | |
| Mort | Rutilus rutilus | 1 | |
| Myrhatt | Comarum palustre | 1 | |
| Mystacides azurea | 1 | ||
| Rhantus suturellus | 1 | ||
| Somatochlora metallica | 1 | ||
| Mallard | Anas platyrhynchos | 1 | |
| Svart høstlibelle | Sympetrum danae | 1 | |
| Tabellaria flocculosa | 2 | ||
| Tjernaks | Potamogeton natans | 1 |
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