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Two targets were put forward for the groynes (Schelde nieuwsbrief 2002).
The groynes were effective for both targets: the area of the intertidal flat has increased and new patches of salt marsh are being formed. Also, bird numbers and marsh vegetation have increased (van der Pluijm and de Jong 2008). Furthermore, the 17th century village is covered by sediment again and saved from flushing away. No maintenance is necessary.
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Groynes at the marsh near Waarde
Table of content
- 1. Description of measure
- 1a. Measure description
- 1b. Monitoring
- 1c. Monitoring results
- 2. Execution of main effectiveness criteria
- 2a. Effectiveness according to development targets of measure
- 2b. Impact on ecosystem services
- 2c. Degree of synergistic effects and conflicts according to uses
- 3. Additional evaluation criteria in view of EU environmental law
- 3a. Degree of synergistic effects and conflicts according to WFD aims
- 3b. Degree of synergistic effects and conflicts according to Natura 2000 aims
- 4. Crux of the matter
- 5. References
Additional information
for this measure:
No further information available.
for this measure:
No further information available.
Effectiveness according to development targets of measure
Step 1: Definition of development targetTwo targets were put forward for the groynes (Schelde nieuwsbrief 2002).
- The first target is to stop the erosion of the tidal flat and salt marsh near Waarde (see Figure 3) and increase their ecological function (see Figure 4).
- The second target is to preserve the 17th century village.
The groynes were effective for both targets: the area of the intertidal flat has increased and new patches of salt marsh are being formed. Also, bird numbers and marsh vegetation have increased (van der Pluijm and de Jong 2008). Furthermore, the 17th century village is covered by sediment again and saved from flushing away. No maintenance is necessary.