Site: Åstveitvannet
| Species | Scientific name | 1989 | 1990 | 1991 |
|---|---|---|---|---|
| Anabaena sp. | 1 | 2 | ||
| Ankistrodesmus sp. | 2 | 1 | ||
| Bezzia sp. | 1 | |||
| Bitrichia cf. chodatii | 1 | |||
| Chilomonas sp. | 1 | |||
| Coenagrion sp. hastulatum gr. | 1 | |||
| Cryptochironomus sp. | 1 | |||
| Cryptomonas sp. | 1 | 1 | ||
| Cyclotella sp. | 2 | 1 | ||
| Dinobryon cf. divergens | 1 | |||
| Endochironomus cf. tendens | 1 | |||
| Pea clam | Pisidium sp. | 1 | ||
| Euastrum sp. | 2 | |||
| Mallomonas sp. | 2 | 1 | ||
| Mallomonas spp. | 1 | |||
| Microcystis sp. | 2 | 1 | ||
| Microtendipes n. sp. ? | 1 | |||
| Mystacides sp. | 1 | |||
| Oocystis sp. | 2 | |||
| Pandorina cf. morum | 1 | |||
| Polyarthra sp. | 1 | |||
| Procladius sp. | 1 | |||
| Rhodomonas sp. | 1 | |||
| Scenedesmus sp. | 1 | |||
| Sisyra sp. | 1 | |||
| Sphaerocystis cf. schroeteri | 1 | |||
| Staurastrum sp. | 1 | |||
| Synchaeta sp. | 1 | |||
| Synura sp. | 1 | |||
| Ablabesmyia monilis | 1 | |||
| Aeshna grandis | 1 | |||
| Anabaena circinalis | 1 | |||
| Asterionella formosa | 1 | 2 | ||
| Bitrichia chodatii | 1 | |||
| Ceratium hirundinella | 1 | 2 | 1 | |
| Chaoborus flavicans | 2 | |||
| Cloeon simile | 1 | |||
| Cyrnus flavidus | 1 | |||
| Daphnia longispina | 1 | |||
| Dinobryon divergens | 1 | 1 | ||
| Enallagma cyathigerum | 1 | |||
| Eudorina elegans | 1 | |||
| Flaskestarr | Carex rostrata | 1 | ||
| Flotgras | Sparganium angustifolium | 1 | ||
| Glattskivesnegl | Gyraulus laevis | 1 | ||
| Grøftesoleie | Ranunculus flammula | 1 | ||
| Yellow Water-lily | Nuphar lutea | 1 | ||
| Heterotanytarsus apicalis | 1 | |||
| Heterotrissocladius marcidus | 1 | |||
| Hoppekreps | Eudiaptomus gracilis | 1 | ||
| Hydroporus palustris | 1 | |||
| Hygrotus quinquelineatus | 1 | 1 | 1 | |
| Ilybius fuliginosus | 1 | |||
| Kellicottia longispina | 1 | |||
| Klovasshår | Callitriche hamulata | 1 | ||
| Korshikoviella limnetica | 1 | |||
| Leptophlebia vespertina | 1 | |||
| Lumbriculus variegatus | 1 | |||
| Lyssiv | Juncus effusus | 1 | ||
| Mallomonas akrokomos | 1 | |||
| Nordskivesnegl | Gyraulus acronicus | 1 | 1 | |
| Parachironomus vitiosus | 1 | |||
| Polycentropus irroratus | 1 | |||
| Psectrocladius psilopterus | 1 | |||
| Pyrrhosoma nymphula | 1 | |||
| Ryllsiv | Juncus articulatus | 1 | ||
| Sergentia coracina | 1 | 1 | ||
| Sialis lutaria | 1 | 1 | ||
| Sigara dorsalis | 1 | |||
| Småstarr | Carex nigra | 1 | ||
| Somatochlora metallica | 1 | |||
| Sphaerocystis schroeteri | 1 | |||
| Stor ryggsvømmer | Notonecta glauca | 1 | 1 | 1 |
| Subsigara scotti | 1 | |||
| Svart høstlibelle | Sympetrum danae | 1 | ||
| Tabellaria fenestrata | 2 | |||
| Tabellaria flocculosa | 2 | |||
| Tjernaks | Potamogeton natans | 1 | ||
| Toøyd flatigle | Helobdella stagnalis | 1 | ||
| Brown trout | Salmo trutta | 1 | ||
| distincta | 1 | 1 |
