Hard substrate
The results show that after the first year (T1), the foreshore rubble has already resembled similar or more species than in 2014 (T0). Both at the east and the western transect, the hydroids and Bryozoans form are the most abundant, followed by sea squirts, anemones, polychaete and other groups. This order remains the same in both years. As expected the coverage of hard substrate species is lower after the construction work, there is a shift visible in the most dominant species in coverage from Japanese oyster to Bryozoans. Species are developing better on the ecotop substrates of sandstone/quartzite and limestone, compared to gravel. On the gravel now communities of species are developing during the measurement period. This shows the significant increase of ecological potential caused by the used ecotop.
Soft substrate
Measurements show that the presents of the ecotops structures (reef shape structures) support the development of soft sediment deposition. In the most eastern part of the study area 10-30 cm sediment layers are present. At this locations it was possible to determine the contents of soft sediment species. Results show a fast recovery of soft substrate species. At the shallow parts 5-10 different species were present, and at the deeper parts 15-25 species.
European lobster
The development of the European lobster population show a slow recovery in number of species over the period 2015 (T1) and 2016 (T2). The number of individuals per cage was 0.13-0.95 over a three day measurement period. There was no significant increase in number over the two measurements.
Zie ook
- Oesterdam sand nourishment - ecological and morphological development of a local sand nourishment
- The colonization by seaweed and fauna of different revetment types at Sint-Annaland, Tholen; RAAK-PRO Building for Nature final report
- The Benthic Ecosystem Quality Index (BEQI), intercalibration and assessment of Dutch coastal and transitional waters for the Water Framework Directive. Final report
- Rammegors tidal restauration, final report
- The conservation of eroding intertidal flats through nourishments: Ecological development on the Oesterdam tidal flat (Oosterschelde, the Netherlands)
- Ecosystem Services of constructed oyster reefs
- Ecological potential of mastic asphalt for rich revetments
- ANT Oosterschelde: Long-term trends of waders and their dependence on intertidal foraging grounds
- Building with Nature; from concepts to practice
- On the relationship between dike revetments and ecology: lessons learned for design and follow-up monitoring for asphalt covered locations
