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Little is known about the effects of grazing by birds on seasonally flooded Australian wetlands. Grazing by Black Swans Cygnus atratus (Latham) has an obvious visual impact in Little Broadwater, an ecologically important wetland on the Clarence River floodplain on the east coast of Australia. We measured the impact of grazing by swans in this wetland from March to September 2007 by comparing the structure...
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