Site: Hegglandsvatnet
| Species | Scientific name | 1991 | 1993 |
|---|---|---|---|
| Ankyra sp. | 1 | ||
| Coenagrionidae indet. | 1 | ||
| Corixidae indet. | 1 | ||
| Eudorina sp. | 1 | 1 | |
| Gerridae indet. | 1 | ||
| Limnephilus sp. | 1 | ||
| Mallomonas sp. | 1 | ||
| Melosira sp. | 1 | ||
| Microcystis sp. | 1 | ||
| Monoraphidium sp. | 1 | ||
| Oscillatoria sp. | 1 | ||
| Pandorina sp. | 1 | ||
| Potamophylax sp. | 1 | ||
| Quadrigula sp. | 1 | ||
| Rhizosolenia sp. | 1 | ||
| Spondylosium sp. | 1 | ||
| Staurastrum cf. planctonicum | 1 | ||
| Staurastrum sp. | 1 | 1 | |
| Anabaena flos-aquae | 1 | 1 | |
| Asterionella formosa | 1 | 1 | |
| Bekkemeitemark | Eiseniella tetraedra | 1 | |
| Ceratium hirundinella | 1 | ||
| Dinobryon divergens | 1 | ||
| Dinobryon sertularia | 1 | ||
| Enallagma cyathigerum | 1 | ||
| Gråsugge | Asellus aquaticus | 1 | |
| Haliplus wehnckei | 1 | ||
| Hundeigle | Erpobdella octoculata | 1 | |
| Hygrotus quinquelineatus | 1 | ||
| Ilybius fuliginosus | 1 | ||
| Ischnura elegans | 1 | ||
| Liten vannløper | Gerris lacustris | 1 | 1 |
| Lys Andeigle | Theromyzon tessulatum | 1 | |
| Nordskivesnegl | Gyraulus acronicus | 1 | 1 |
| Protonemura meyeri | 1 | ||
| Sigara dorsalis | 1 | 1 | |
| Tabellaria flocculosa | 1 | ||
| Vanlig damsnegl | Lymnaea peregra | 1 |
