Gyldensteen Coastal Lagoon

Gyldensteen Coastal Lagoon was the first large-scale and coastal realignment restoration project in Denmark with 214 hectares, which was created in 2014 by breaching the dikes and allowing seawater to flood agricultural soil. Gyldensteen Coastal Lagoon is protected and part of a Natura 2000 area (site number 108) and Ramsar site.


Habitats Types in Gyldensteen Coastal Lagoon


Intertidal flats




Salt Marshes


  • Delayed biodiversity development of benthic invertebrates due to soil structural change originated from previous agriculture activities.

Main objectives

  1. 1
    Integrate the large protected area in North Fyn together with Æblelø 
  2. 2
    Give everyone in Denmark the opportunity to experience a rich nature
  3. 3
    Increase awareness of the value of nature to young generations
  4. 4
    Provide climate adaptation to nearby houses and part of Bogense (small city)

Key Opportunities

  • Upscaling and replicability, ca. 40,000 ha similar reclaimed areas
  • Currently working on a CO2 tool for calculating climate mitigation benefits of flooding reclaimed/agricultural areas to EPA
  • Lessons learned can be used to design future projects
  • Great number of visitors, ca. 80,000 per year
  • Involvement with diverse stakeholder groups
  • Improve in person outreach activities
  • Valuation of ecosystem services provided by recreation and aesthetics of the area.

Current and future restoration actions

Contact Person

Main contact
Cintia Organo Quintana