Beaver positives outweigh negative impact on fish
BEAVERS harm freshwater fish by blocking rivers with dams and silting up streams, a report has concluded.
However, the Scottish Natural Heritage study revealed the animals also have positive impacts on freshwater fish.
The report, carried out by the University of Southampton, was the most thorough review into the issue ever undertaken.
The findings will determine whether beavers should be permanently released in Scotland, following a five-year trial reintroduction taking place at Knapdale Forest, Argyll.
Beavers blocked migration routes for fish with dams and destroyed spawning areas.
But the presence of beavers led to an increase in the variety of habitats for fish, and increased the amount of fish they can feed on.
The report concludes that the negative impacts are off-set by the benefits.
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