Case study:Restoration of the Roer for species migration
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Project overview
| Status | Complete |
|---|---|
| Project web site | http://www.vismigratieroer.nl |
| Themes | Fisheries, Habitat and biodiversity |
| Country | Netherlands |
| Main contact forename | Peter |
| Main contact surname | Brouwers |
| Main contact user ID | |
| Contact organisation | Waterschap Roer en Overmaas |
| Contact organisation web site | http://www.overmaas.nl |
| Partner organisations | |
| Parent multi-site project | |
| This is a parent project encompassing the following projects |
No |
Project summary
The Roer river forms a potential habitat for fish species that migrate between the Meuse and the Roer. The Dutch section of the Roer also forms a route for fish that migrate between the North Sea and the Meuse to their spawning.
The main aim of the project was to facilitate improved habitat access and migratory conditions in the Roer Delta for Atlantic salmon (Salmo salar) and other Annex II species, namely asp (Aspius aspius), bullhead (Cottus gobio), river lamprey (Lampetra fluviatilis), brook lamprey (Lampetra planeri), sea lamprey (Petromyzon marinus), bitterling (Rhodeus sericeus susbsp. amarus)and weatherfish (Misgurnis fossilis).
A new fish ladder was built in Roermond and the existing fish ladder at Hambeek was improved to increase its effectiveness. These two structures overcome the last remaining obstacles for fish migration between the river Meuse and the Dutch part of the river Roer, thus opening up an improved migratory route for fish from the North Sea to Germany.
Monitoring has confirmed that three of the species targeted by the project (salmon, sea lamprey and European bullhead are using the new Roermond fish ladder. Salmon and sea lamprey have also been recorded using the improved Hambeek migratory facilities and ongoing monitoring by the beneficiary will continue to measure the project’s long term impact on fish populations in the Roer.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Site
| Name | |
|---|---|
| WFD water body codes | |
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| Pre-project morphology | |
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| Desired post project morphology | |
| Heavily modified water body | No |
| National/international site designation | |
| Local/regional site designations | Natura 2000 |
| Protected species present | Yes |
| Invasive species present | No |
| Species of interest | Namely asp (Aspius aspius), bullhead (Cottus gobio), river lamprey (Lampetra fluviatilis), brook lamprey (Lampetra planeri), sea lamprey (Petromyzon marinus), bitterling (Rhodeus sericeus susbsp. amarus), weatherfish (Misgurnis fossilis) |
| Dominant hydrology | |
| Dominant substrate | |
| River corridor land use | |
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Project background
| Reach length directly affected (m) | |
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| Project started | |
| Works started | |
| Works completed | |
| Project completed | |
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Cost for project phases
| Phase | cost category | cost exact (k€) | Lead organisation | Contact forename | Contact surname |
|---|---|---|---|---|---|
| Investigation and design | |||||
| Stakeholder engagement and communication | |||||
| Works and works supervision | |||||
| Post-project management and maintenance | |||||
| Monitoring |
Reasons for river restoration
| Mitigation of a pressure | |
|---|---|
| Hydromorphology | |
| Biology | |
| Physico-chemical | |
| Other reasons for the project |
Measures
Structural measures
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| Bank/bed modifications | |
| Floodplain / River corridor | |
| Planform / Channel pattern | |
| Other | |
Non-structural measures
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| Management interventions | |
| Social measures (incl. engagement) | |
| Other | |
Monitoring
Hydromorphological quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Biological quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Physico-chemical quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Any other monitoring, e.g. social, economic
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Monitoring documents
Image gallery
Additional documents and videos
Additional links and references
| Link | Description |
|---|---|
| http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=home.showFile&rep=laymanReport&fil=LIFE06 NAT NL 000078 LAYMAN.pdf | Layman’s report (2008). Life-nature project - Restoration of fish migration in the river Roer |
| http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=home.showFile&rep=file&fil=LIFE06 NAT NL 000078 AfterLIFE NL.pdf | LIFE Nature Roer Migration Projects. After LIFE Conservation Plan 2009 |
| http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=search.dspPage&n proj id=3128&docType=pdf | LIFE Roer Web information |
Supplementary Information
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