Of all the actions we undertake, restoring the habitat of smaller sized rivers and tributaries seems to be the most controversial and least well understood.
in rivers is usually caused by overgrazing of bank side vegetation and the trampling of riverbanks by sheep and cattle. This results in the destabilisation of the banks, which cause streams to become wider and shallower. It also leads to more silt in rivers.
Starting in 1996, the Foundation’s surveys found large parts of the Wye and Usk catchments were no longer in a sufficiently good state to support the densities of fish of former years. Two things had changed in rural areas:
In combination, these had led to fish densities in the majority of tributary streams being only 20% of their potential.
This has three main elements.
Many of the Foundation’s projects have involved some sort of habitat restoration.
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