By: Bent Lauge Madsen
28 pages, Col photos, illus, figs
Describes how watercourses can be given new riffles, which oxygenate the water, how the river keeper can clear weeds in a way that ensures good living conditions for the fish, and how one can ensure the trout free passage up to the small brooks where they lay their eggs. It also describes why it is important that rivers be allowed to overswim adjoining meadows.
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