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An additional environmental assessment study was carried out in order to estimate the effects of the measure on habitats, birds and other species protected by the ‘Birds and Habitat Directive’ (BHD). Herein advices were given in order to minimize the effects of the works, e.g. they should not be conducted within the molting time of certain geese. Phytoplankton will not be affected, fish only during the construction period, and zoobenthos will need some time to recover after the construction. Benthic communities will change where stones or gravel are used to stabilize the 'Unterwater relocation area'.
According to the assessment study there will be an increase of biodiversity. Also new species will occur due to a stony sea bed which differ from those typically found in the Elbe eastuary. However, they will still be typical for the North Sea and German Bight, which also have stony grounds at some locations, e.g. around the island of Helgoland.
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Underwater relocation area Medemrinne Ost
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.
Expected effect
The ”Underwater relocation area ‘Medemrinne-Ost’“ will reduce the tidal energy by reflection and dissipation. Thus, the increase of the tidal range that can occur in the frame of the fairway deepning will be mitigated in a certain extent. It will locally reduce erosion and lead to sedimentation in the Elbe branch ’Medemrinne‘.An additional environmental assessment study was carried out in order to estimate the effects of the measure on habitats, birds and other species protected by the ‘Birds and Habitat Directive’ (BHD). Herein advices were given in order to minimize the effects of the works, e.g. they should not be conducted within the molting time of certain geese. Phytoplankton will not be affected, fish only during the construction period, and zoobenthos will need some time to recover after the construction. Benthic communities will change where stones or gravel are used to stabilize the 'Unterwater relocation area'.
According to the assessment study there will be an increase of biodiversity. Also new species will occur due to a stony sea bed which differ from those typically found in the Elbe eastuary. However, they will still be typical for the North Sea and German Bight, which also have stony grounds at some locations, e.g. around the island of Helgoland.