Reed reduction and goose grazing in South Swedish lakes

Andersson, Gunnar (1997) Reed reduction and goose grazing in South Swedish lakes. MAGYAR VÍZIVAD KÖZLEMÉNYEK, 3. pp. 295-296. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

The lakes in Scania (the southernmost province of Sweden) are generally shallow, eutrophic and surrounded by reed belts. During the 1980's increasing damage was observed at the lakeward edge of many reed belts Aerial photographs document that reed area in some lakes has declined substantially during the last ten years. This reduction has occurred simultaneously with a iarge increase in the population of the Greylag Goose (Anser anser) in Sweden it is believed that the decline is caused mainly by grazing Greylag Geese, staying in the Seaman lakes during breeding (April-May), molting (June) and autumnal migration (July-September), in August-September large areas of Phragmites australis are affected by geese grazing. However, the largest impact is thought to occur during the early breeding season, when nutritious shoots (submerged) of Phragmites are important food items.

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