Processes That Affect Saltmarsh Erosion and Saltmarsh Restoration
189
Fig. 8.7. Photograph of one of a series of recently dug parallel channels in the marsh on
the Hindenburg Dam on the Island of Sylt. In the background a low ridge of sediment
reinforced with wooden stakes protects the excavations from waves
A
c=:=J
,...., ,-., ..
8.6 Conclusions
c
Fig. 8.8. A Diagram of the excavated
channels shown in Fig. 8.7. B Diagram
of suggested improved design with
triangular channels (see text for
details). C Diagram of a double row
of wave breaks to create an "open
chevron" design
The generally accepted hypothesis that SLR and coastal squeeze are responsible for the losses of vegetation in saltmarshes of SE England is not supported by data, which indicate that vertical accretion of marsh surfaces is at
least sufficient to keep pace with SLR, or by the pattern of erosion, which is
largely by the lateral extension of saltmarsh creeks. The hypothesis that the
rarity of developing pioneer zone vegetation and saltmarsh erosion is, at least
in part, due to the infaunal invertebrates, which exacerbate sediment erosion
and loss of vegetation by bioturbation and herbivory, is developed in the
189
Fig. 8.7. Photograph of one of a series of recently dug parallel channels in the marsh on
the Hindenburg Dam on the Island of Sylt. In the background a low ridge of sediment
reinforced with wooden stakes protects the excavations from waves
A
c=:=J
,...., ,-., ..
8.6 Conclusions
c
Fig. 8.8. A Diagram of the excavated
channels shown in Fig. 8.7. B Diagram
of suggested improved design with
triangular channels (see text for
details). C Diagram of a double row
of wave breaks to create an "open
chevron" design
The generally accepted hypothesis that SLR and coastal squeeze are responsible for the losses of vegetation in saltmarshes of SE England is not supported by data, which indicate that vertical accretion of marsh surfaces is at
least sufficient to keep pace with SLR, or by the pattern of erosion, which is
largely by the lateral extension of saltmarsh creeks. The hypothesis that the
rarity of developing pioneer zone vegetation and saltmarsh erosion is, at least
in part, due to the infaunal invertebrates, which exacerbate sediment erosion
and loss of vegetation by bioturbation and herbivory, is developed in the