Fig. 1From: Is food supply for shellfish-eating birds in the western Wadden Sea affected by the between-species synchrony in year-to-year fluctuations of bivalve population parameters?Maps of (top) the westernmost part of the Wadden Sea and (bottom) the Balgzand tidal-flat area. The permanent sampling sites are indicated: 12 transects (numbered 1–12) and 3 squares (A, B, C). Bivalve growth rates were studied in detail at the 6 transects numbered 4, 5, 8, 9, 10, and 11 in the central part of BalgzandBack to article page