Provenance & quality
The location of the sample sites was determined by randomly allocated quadrats. Twenty two 1 x 1 m quadrats were randomly allocated to each mudflat and saltmarsh site using R (R Development Core Team, 2014) to specify four different spatial scales (A = 1 quadrat only, B = 3 quadrats at 1 m to 10 m apart, C = 6 quadrats at 10 m to 100 m apart, D = 12 quadrats at 100 m to 1000 m or site maximum). At each of these, one fyke net was deployed perpendicular to the shore and over the course of two tidal cycles. The fyke net was a five hoop double fyke net (mesh size: 22mm knot to knot, 8m leader, 0.5m hoop).