Disclaimer:
The authors are solely responsible for the content of this report. Material included herein does not represent the opinion of the European Community, and the European Community is not responsible for any use that might be made of it.
Back to overview measures
A controversial discussion about reaching the development targets of the realignment ‘Hahnöfer Sand’ took place. The success concerning nature compensation efforts in this area was generally negated by the NGO’s. They considered the compensation measure being not sufficient to compensate the intervention of Airbus Company in the area ‘Mühlenberger Loch’.
Siltation of the shallow water area took place and the sediment composition of the mudflats developed in a slightly different way than predicted. However, in general the measure was considered as a success. The area consists of 3% shallow water and 97% mudflats. Two years after the western part was opened to the tide, broad freshwater mudflats had evolved. Expectations on the development of Oenanthe conioides were more than fulfilled. The stocking of Oenanthe conioides had increased significantly (June: 62 individuals, September: 302 individuals) in front of a margin of willows which developed in 2004. This target was not only fulfilled, the expectations have been exceeded. Other vulnerable species established as well.
The area seemed not to be a good feeding ground for the species Anas clypeata, but for many other resting bird species and species protected by the BHD. Populations of ducks and wading birds are fully established. Only the demand of an Anas clypeata population of about 400 individuals could not be reached. Therefore the RAMSAR value of threshold criterion (400 individuals) was not fulfilled with regard to the key species Anas clypeata. The monitoring on the development of the population of Anas clypeata is still going on.
Back to top
Compensation measure ‘Hahnöfer Sand’
Table of content
- 1. Measure description
- 1a. Introduction
- 1b. Objectives
- 1c. Background and side conditions
- 1d. Measure
- 1e. Expected effect
- 2. Execution of the main effectiveness criteria
- 2a. Effectiveness according to development targets of measure
- 2b. Impact on ecosystem services
- 2c. Degree of synergistic effects and conflicts according the uses
- 3. Additional evaluation criteria in view of EU environmental law
- 3a. Degree of synergistic effects and conflicts according WFD aims
- 3b. Degree of synergistic effects and conflicts according NATURA 2000 aims
- 4. Crux of the matter
- 5. Contact
- 6. References
Additional information
for this measure:
No further information available.
for this measure:
No further information available.
Effectiveness according to development targets of measure
Definition of development targets:- Establishment of an intertidal area with freshwater mudflats to compensate the loss of freshwater mudflats in the area of the ´Mühlenberger Loch´.
- Development of feeding and resting place for ducks and other water birds, especially for the ’Northern Shoveler’ (Anas clypeata) which is one of the most valuable species in the area ’Mühlenberger Loch’.
- Improving the development of the endemic ’Elbe Water Dropwort’ (Oenanthe conioides)
A controversial discussion about reaching the development targets of the realignment ‘Hahnöfer Sand’ took place. The success concerning nature compensation efforts in this area was generally negated by the NGO’s. They considered the compensation measure being not sufficient to compensate the intervention of Airbus Company in the area ‘Mühlenberger Loch’.
Siltation of the shallow water area took place and the sediment composition of the mudflats developed in a slightly different way than predicted. However, in general the measure was considered as a success. The area consists of 3% shallow water and 97% mudflats. Two years after the western part was opened to the tide, broad freshwater mudflats had evolved. Expectations on the development of Oenanthe conioides were more than fulfilled. The stocking of Oenanthe conioides had increased significantly (June: 62 individuals, September: 302 individuals) in front of a margin of willows which developed in 2004. This target was not only fulfilled, the expectations have been exceeded. Other vulnerable species established as well.
The area seemed not to be a good feeding ground for the species Anas clypeata, but for many other resting bird species and species protected by the BHD. Populations of ducks and wading birds are fully established. Only the demand of an Anas clypeata population of about 400 individuals could not be reached. Therefore the RAMSAR value of threshold criterion (400 individuals) was not fulfilled with regard to the key species Anas clypeata. The monitoring on the development of the population of Anas clypeata is still going on.