Fig. 2From: Now an empty mudflat: past and present benthic abundances in the western Dutch Wadden SeaBenthic abundances in 1956 and 1996–2005 of a polychaetes, b crustaceans, and c molluscs (both axes are log-scaled). The line marks equal abundances in 1956 and 1996–2005. Zones (see Table 1) are: 1 (filled circle), 2 (open circle), 3 (filled triangle), 4 (open triangle), 5 (filled diamond), 6 (open diamond)Back to article page