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Amsterdam Dune project - 'Amsterdam Dunes - source for nature', dune habitat restoration project

LIFE11 NAT/NL/000776


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Contact details:

Contact person: Luc Geelen
Email: luc.geelen@waternet.nl



Project description:

Background

Waternet is responsible for the provision of water-related services for Amsterdam and the surroundings. Among its main responsibilities is the management of the Amsterdam Watersupply Dunes (AWD), a 3 400 ha nature site, owned by the municipality of Amsterdam, and part of the Natura 2000 network of sites. The main land use is nature conservation and drinking water supply. Every year up to 800 000 people visit the site for walking and hiking.

Since 1850, the area’s valuable, characteristic dune/ wetland habitat types had deteriorated both in size and quality due to desiccation (drying out) from water extraction, air pollution and acidification and eutrophication (nitrogen deposition). In recent decades this problem had decreased, due to changing the method of water production in the area and measurements to reduce the nitrogen deposition. Since 1990, conservation measurements and further large-scale projects had been carried out by Waternet, to restore the natural dune systems and wetland habitat types. However, large-scale restoration measurements were required in order to reverse the effects of long term dehydration, eutrophication and encroachment of the invasive alien species, black cherry (Prunus serotina) in order to create the right conditions for the restoration of the natural habitats.


Objectives

The overall aim of the Amsterdam Dune project was to restore and improve the characteristic and priority habitat types of the Natura 2000 network site, Kennemerland-Zuid, located to the west of Amsterdam. The area’s recovery was encouraged by actions targeting the effects of drying out and eutrophication, such as the removal of the nitrogen-rich top layer of soil and of invasive species, restoration of ponds; and by mowing, grazing, and other nature management measures.

Specific project goals were:

  • To expand and improve in quality the priority habitat type, ‘fixed coastal dunes with herbaceous vegetation’ (2130), also known as grey dunes;
  • To expand and improve in quality the habitat type, ‘dunes with Hippophae rhamnoide’ (2160), also known as sea-buckthorn; and
  • To expand and improve in quality the habitat type, ‘humid dune slacks’ (2190), which in turn, is also important for associated Annex II and Annex IV Habitats Directive species, such as: narrow-mouthed whorl snail (Vertigo angustior), large white-faced darter (Leucorrhinia pectoralis, and the fen orchid (Liparis loeselii).


Results

All the planned actions of the Amsterdam Dune project were successfully completed during the project. The project met its objectives, while at the same time, the beneficiary gained valuable experience on how to organise large scale restoration actions. The ecological monitoring results showed that, despite the short time since the measures were carried out, the recovery of priority habitat types, ‘grey dunes’ had started. ‘Dunes with Hippophae rhamnoides’ also appeared to recover, but only locally. In a relatively short timescale, sixty three ponds were restored, after dredging and removal of mud bank vegetation, and the initial developments concerning 'humid dune slacks’ were similarly, fairly positive by project end. Nevertheless, the existing fallow deer population posed a threat to the restored dunes, due to over grazing. A Fallow Deer Management Plan was developed to address this issue.

In terms of policy, the project contributed directly to the implementation of the EU Birds and Habitats Directive, the EU Biodiversity Strategy to 2020, the EU strategy on invasive species and national policy concerning Natura 2000 site management.

Other results included removal of a larger than expected area (169.15 ha) of scrub and woodlands, including the invasive alien species, black cherry (Prunus serotina) which had spread more extensively than expected, between the time of the project application and implementation. This resulted in the need to remove more than initially planned for and thus, higher costs. In the future, the beneficiary has pledged to closely monitor development of the invasive black cherry and other IAS (Invasive Alien Species) and to carry out measures to combat its development, as early as possible to reduce the amount of required remedial work. Interestingly, the project showed it was possible to combat the invasive species, without the use of any chemical.

Monitoring showed that, despite the short time since the project’s measures were carried out, recovery of priority habitat type, ‘grey dunes’ had started. However, in the areas where mowing was the main or sole activity carried out, the LIFE team observed that there were still a number of species adversely affected by encroachment. Therefore, it was decided that extra maintenance (provided for in the project’s After-LIFE plan) would be required, in order to guarantee a durable result.

Concerning the ‘humid dune slacks’, while the early results were positive, the beneficiary cautioned that the supply of sufficient base-rich groundwater with seepage and sufficient dispersion of the targeted species from the surrounding area might prove to be a problem for full restoration of this habitat type. Also, although only recently restored, the ponds have started to show some promising results. For instance, the establishment of stonewort (Characeae), and return of amphibians (e.g. the natterjack toad) and dragonflies (e.g. yellow-spotted whiteface).

Finally, based on the measures carried out and the initial monitoring results, the project forecast the following, expected habitat developments for the medium term:

  • ‘Lime-rich grey dunes’ and ‘lime-deficient grey dunes’ extended and improved on 46 ha, and 205 ha respectively;
  • ‘Dunes with Hippophae rhamnoides’ extended and improved on 17 ha;
  • ‘Humid dune slacks’ (humid dune slacks, lime-rich/ nutrient-poor soil grey dunes) extended and improved on 24 ha;
  • Humid inland dune grasslands (including species from lime-rich humid dune slacks) extended and improved on 1 ha; and
  • Open water humid dune slacks extended and improved on 2 ha.

Further information on the project can be found in the project's layman report and After-LIFE Conservation Plan (see "Read more" section).


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Environmental issues addressed:

Themes

Habitats - Coastal


Keywords

restoration measure‚  grazing‚  coastal area‚  wetland‚  management plan


Target EU Legislation

  • Nature protection and Biodiversity
  • COM(2011) 244 final “Our life insurance, our natural capital: an EU biodiversity strategy to 2020 ...
  • Regulation 1143/2014 - Prevention and management of the introduction and spread of invasive alien ...
  • Directive 92/43 - Conservation of natural habitats and of wild fauna and flora- Habitats Directiv ...
  • Directive 2009/147 - Conservation of wild birds - Birds Directive (codified version of Directive ...

Target species

 Bufo calamita   Leucorrhinia pectoralis   Liparis loeselii   Vertigo angustior     


Target Habitat types

  • 2130 - Fixed coastal dunes with herbaceous vegetation ("grey dunes")
  • 2160 - Dunes with Hippophaë rhamnoides
  • 2190 - Humid dune slacks

Natura 2000 sites

SCI NL1000012 Kennemerland-zuid


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Beneficiaries:

Coordinator Waternet Foundation
Type of organisation NGO-Foundation
Description The Waternet Foundation is responsible for the provision of water related services for the municipality of Amsterdam and the “Amstel, Gooi en Vecht” water board. One of its main tasks is the management of the “Amsterdam Watersupply Dunes” (AWD), the primary drinking water supply for Amsterdam, based on the dune management plan. Nowadays, deep pumping of groundwater has been replaced by the filtration of Rhine water into the dunes. As a result, the groundwater levels have become elevated to their natural level. Since 1990, conservation measurements and large-scale projects have been carried out in order to restore the natural dune systems and wetland habitats.
Partners None

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Project reference LIFE11 NAT/NL/000776
Duration 01-JUN-2012 to 31-DEC -2016
Total budget 2,483,024.00 €
EU contribution 1,241,512.00 €
Project location Noord-Holland(Nederland)

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Read more:

Project web site Project's website
Publication: After-LIFE Conservation Plan After-LIFE Conservation Plan (Dutch version)
Publication: Exhibition catalogue "LIFE+ in de Amsterdamse waterleidingduinen" (5.40 ...
Publication: Layman report Layman report (Dutch version)
Publication: Layman report Layman report
Publication: Management plan "Monitoring Life+ projecten Amsterdamse Waterleidi ...
Publication: Proceedings "Dynamic Dunes 2015: Executive Summary" (2.37 MB)
Publication: Research findings "Waardering en beleving van de Amsterdamse Waterle ...
Publication: Research findings "Kennis en waardering van de Amsterdamse Waterleid ...
Publication: Technical report "Verkennend onderzoek naar ecosysteemdiensten in d ...
Publication: Technical report Project's Final technical report (Dutch version, w ...

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Project description   Environmental issues   Beneficiaries   Administrative data   Read more   Print   PDF version