Site: Langavatnet
| Species | Scientific name | 1989 | 1990 | 1991 |
|---|---|---|---|---|
| Agabus sp. | 1 | |||
| Anabaena cf. spiroides | 1 | |||
| Anabaena sp. | 1 | 1 | 1 | |
| Ankyra sp. | 1 | 1 | ||
| Brasmegras | Isoëtes sp. | 1 | ||
| Closterium sp. | 1 | |||
| Coenagrion sp. hastulatum gr. | 1 | |||
| Corynoneura sp. | 1 | |||
| Cricotopus sp. | 1 | |||
| Cryptomonas spp. | 1 | |||
| Cyclotella sp. | 1 | |||
| Einfeldia sp. gr. C | 1 | |||
| Pea clam | Pisidium sp. | 1 | 2 | |
| Koliella spp. | 1 | |||
| Mallomonas sp. | 1 | 1 | ||
| Mallomonas spp. | 1 | |||
| Melosira sp. | 1 | |||
| Notonecta sp. | 1 | |||
| Oocystis sp. | 1 | |||
| Oscillatoria sp. | 1 | |||
| Psectrocladius limbatellus gr. | 1 | |||
| Psectrocladius psilopterus gr. | 1 | |||
| Rhodomonas spp. | 1 | |||
| Tjønnaks | Potamogeton sp. | 1 | ||
| Andemat | Lemna minor | 1 | ||
| Ankistrodesmus falcatus | 1 | |||
| Asterionella formosa | 1 | 1 | 1 | |
| Caenis horaria | 1 | |||
| Centroptilum luteolum | 1 | |||
| Cloeon simile | 1 | |||
| Crucigenia tetrapedia | 1 | |||
| Cryptomonas marssonii | 1 | |||
| Dicrotendipes lobiger | 1 | |||
| Dicrotendipes pulsus | 1 | 1 | ||
| Dictyosphaerium pulchellum | 1 | |||
| Dinobryon divergens | 1 | 1 | 1 | |
| Elvesnelle | Equisetum fluviatile | 1 | ||
| Flaskestarr | Carex rostrata | 1 | ||
| Flotgras | Sparganium angustifolium | 1 | ||
| Grøftesoleie | Ranunculus flammula | 1 | ||
| Yellow Water-lily | Nuphar lutea | 1 | ||
| Halesus radiatus | 1 | |||
| Haliplus ruficollis | 1 | |||
| Heterotanytarsus apicalis | 1 | |||
| Holocentropus dubius | 1 | |||
| Ilybius fuliginosus | 1 | |||
| Korshikoviella limnetica | 1 | |||
| Krustjernaks | Potamogeton crispus | 1 | ||
| Leptophlebia vespertina | 1 | 1 | ||
| Linsekreps | Eurycercus lamellatus | 1 | ||
| Liten vannløper | Gerris lacustris | 1 | ||
| Lumbriculus variegatus | 1 | |||
| Lys Andeigle | Theromyzon tessulatum | 1 | ||
| Monoraphidium setiforme | 1 | |||
| Nemoura cinerea | 1 | |||
| Paratanytarsus penicillatus | 1 | |||
| Rhodomonas lacustris | 1 | |||
| Schroederia setigera | 1 | |||
| Sialis lutaria | 1 | 1 | 1 | |
| Sigara dorsalis | 1 | |||
| Spongilla lacustris | 1 | |||
| Tabellaria flocculosa | 2 | 1 | ||
| Toøyd flatigle | Helobdella stagnalis | 1 | ||
| Trepigget stingsild | Gasterosteus aculeatus | 1 | ||
| Vanlig damsnegl | Lymnaea peregra | 1 | ||
| Brown trout | Salmo trutta | 1 | ||
| distincta | 1 |
