Fig. 1From: An invasive alien bivalve apparently provides a novel food source for moulting and wintering benthic feeding sea ducksDistribution and densities of Ensis leei determined from 319 benthos samples taken during 2015–2018 in the moulting (south) and the wintering (north) area in the eastern German North Sea, which are consistently used by moulting and wintering common scoters Melanitta nigraBack to article page