| RA Development of the vegetation | |
|---|---|
| Context | RA Rammegors |
| Decompositie type | IOR |
Figure 1: Overview of the locations where measurements are taken within the Rammegors project (Van de Lageweg et al. 2019.
The vegetation monitoring focused typifying vegetation communities, seed limitation, soil chemistry and drainage. The results show that fresh water vegetation is retreating and being replaced by the intertidal vegetation. There is a substantial die-off of fresh-water vegetation such as reed and grass in the inundated areas. The vegetation is replaced by salt-water species as Salicornia and Aster. Furthermore, it is concluded that there is no seed limitation. Floating nets and seed traps show a huge availability in vital seeds of Aster, Salicornia and reed. Furthermore, the compaction of the mature soil did not change in the last three monitoring years due to the new inundation regime. Dead organic material had no noticeable influence on the redox and sulfide concentration in the pore water of the top 10 cm in sediment. Hence, the die off of the fresh-water vegetation probability did not impact the establishment of salt-marsh vegetation in any way. The mesocosm experiment shows that poor drainage has a negative effect on seedling survival. The most important parameter for tidal recovery projects coming out of the seedling survival experiment is the bed elevation and its corresponding inundation time. For seed survival, the inundation time optimum seems to be between 50 and 95% dry time.
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| Produceert | |
|---|---|
| Consumeeert | |
| Onderdeel van | RA Bringing tide back in Rammegors |
| Instantie van | |
| Betreft |
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| Afhankelijk van | RA Groundwater quality |
|---|---|
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| Afhankelijk van | RA Soil structure |
|---|---|
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