La Tour du Valat

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[Influence of varied carp stock on the distribution of moulting waterfowl in the fish pond area of Ismaninger Teichgebiet between 1996 and 1999]

Ursula Koehler, Auteur ; Peter Koehler, Auteur ; Ursula Firsching, Auteur ; Eberhard von Krosigk, Auteur

Dans Ornithologischer Anzeiger (39(2-3) September, 2000)

A significant reduction of nutrients in the waters of the Ramsar-site "Ismaninger Speichersee mit Fischteichen" caused a reduced production of food for the waterfowl populations moulting there. Since 1994, some species decreased dramatically, ma[...]

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