Improving the substratum in saline lagoons

There is relatively little that can be done to control the composition of the substratum in a saline lagoon. However, there are some key points made in the Saline Lagoon Guide (Section 3.3.3) which should be taken into account:

1. Deposition of sediments in lagoons eventually results in a muddy sand to mud soft sediment;
2. Fine substrata supports more specialist species than other substratum types;
3. A diversity of substratum increases the diversity of habitats and thus fauna and flora present;
4. Fjardic lagoons as frequently found in Scotland contain fewer specialist species, but a wider range of biotopes than elsewhere, including rock associated communities comprising more marine species.
   

Caveat: The guide also suggests that experimental addition of sediments to parts of lagoons could be carried out to observe the possible effects of this management.