Site: Tussvatnet
| Species | Scientific name | 1989 | 1990 |
|---|---|---|---|
| Amphinemura sp. | 1 | ||
| Baetis cf. vernus | 1 | ||
| Caenis cf. horaria | 1 | ||
| Conchapelopia sp. | 1 | ||
| Pea clam | Pisidium sp. | 1 | 1 |
| Euastrum sp. | 2 | ||
| Halesus sp. | 1 | ||
| Haliplus sp. | 1 | ||
| Libellulidae indet. | 1 | ||
| Mallomonas sp. | 1 | ||
| Mallomonas spp. | 1 | ||
| Thienemannimyia sp. | 1 | ||
| Tolypothrix sp. | 1 | ||
| Amphinemura sulcicollis | 1 | ||
| Anacaena globulus | 1 | ||
| Athripsodes cinerus | 1 | ||
| Bekkemeitemark | Eiseniella tetraedra | 1 | |
| Bosmina longispina | 1 | ||
| Broddtjernaks | Potamogeton friesii | 1 | |
| Bukkeblad | Menyanthes trifoliata | 1 | |
| Buttsnutefrosk | Rana temporaria | 1 | |
| Callicorixa producta | 1 | ||
| Carabus glabratus | 1 | ||
| Cloeon simile | 1 | ||
| Conochilus unicornis/hippocrepis | 1 | ||
| Cricotopus laricomalis | 1 | ||
| Cricotopus patens | 1 | ||
| Cyclops scutifer | 1 | ||
| Daphnia longispina | 1 | ||
| Dinobryon crenulatum | 2 | ||
| Elvesnelle | Equisetum fluviatile | 1 | |
| Flaskestarr | Carex rostrata | 1 | |
| Flotgras | Sparganium angustifolium | 1 | |
| Heterotrissocladius marcidus | 1 | ||
| Kellicottia longispina | 1 | ||
| Laccobius minutus | 1 | ||
| Leptophlebia marginata | 1 | 1 | |
| Leucorrhinia dubia | 1 | ||
| Lumbriculus variegatus | 1 | ||
| Megacyclops viridis | 1 | ||
| Myrhatt | Comarum palustre | 1 | |
| Nemoura cinerea | 1 | ||
| Nemurella pictetii | 1 | ||
| Polycentropus flavomaculatus | 1 | ||
| Polyphemus pediculus | 1 | ||
| Psectrocladius psilopterus | 1 | ||
| Common Raven | Corvus corax | 1 | |
| Simocephalus vetulus | 1 | ||
| Stor bruskigle | Glossiphonia complanata | 1 | |
| Tjernaks | Potamogeton natans | 1 | |
| Toøyd flatigle | Helobdella stagnalis | 1 | 1 |
| Trepigget stingsild | Gasterosteus aculeatus | 1 | |
| Trådstarr | Carex lasiocarpa | 1 | |
| Tusenblad | Myriophyllum alterniflorum | 1 | 1 |
| Vanlig damsnegl | Lymnaea peregra | 1 | 1 |
| Brown trout | Salmo trutta | 1 | |
| Østlig torvlibelle | Leucorrhinia rubicunda | 1 |
