Norite gauti panašią informaciją kas rytą? Registruokitės 7 dienų NEMOKAMAI Mercell versijai!
This assignment is for biological and water chemical monitoring of the effect of liming in salmon water courses. The liming should restore the water quality affected by long-range acid rain to a level that is not damaging for salmon and other species. A central goal is the rebuilding or re-establishing of salmon stock to a level with normal production.