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2 unusual facts about Forsån


Forsån

Samples of bottom fauna taken in 1998 documented the presence of nationally rare species of gastropods such as Hippeutis complanatus and bivalve Swan mussel; and during the preceding decades two species of limnetic gastropods were documented.

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Signal crayfish and Trout have been introduced in the stream, of which the former succeeded in establishing while Roach is believed to be unfavourable to the latter.


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