Fig. 2

a The location of the Skallingen salt marsh in southwestern Denmark. The inset indicates b showing the distribution of 11 point bars selected across the marsh. c Sampling design at each bar. d and e are the photos of P4 and P5, respectively

a The location of the Skallingen salt marsh in southwestern Denmark. The inset indicates b showing the distribution of 11 point bars selected across the marsh. c Sampling design at each bar. d and e are the photos of P4 and P5, respectively