Organisational Structure

TWSC Organogram. CWSS. Organisational structure of the Trilateral Wadden Sea Cooperation. CWSS.


The Trilateral Wadden Sea Cooperation comprises of two levels of decision making: the Trilateral Governmental Council and the Wadden Sea Board (WSB). They are supported by the Common Wadden Sea Secretariat (CWSS) as the coordinating body and first contact point, advisors from NGOs, Task Groups as well as Expert Networking Groups. 

Past Trilateral Governmental Conferences

  • Wilhelmshaven, Germany (2022, XIV)
  • Leeuwarden, Netherlands (2018, XIII)
  • Tønder, Denmark (2014, XII)
  • Sylt, Germany (2010, XI)
  • Schiermonnikoog, Netherlands (2005, X)
  • Esbjerg, Denmark (2001, IX)
  • Stade, Germany (1997, VIII)
  • Leeuwarden, Netherlands (1994, VII)
  • Esbjerg, Denmark (1991, VI)
  • Bonn, Germany (1988, V)
  • The Hague, Netherlands (1985, IV)
  • Copenhagen, Denmark (1982, III)
  • Bonn, Germany (1980, II)
  • The Hague, Netherlands (1978, I)


Trilateral Governmental Council

The Trilateral Wadden Sea Governmental Council is composed of the Danish, Dutch and German ministers responsible for Wadden Sea affairs meets every three to four years. At the Trilateral Governmental Conference (TGC) they discuss the general direction of the Cooperation in terms of policies, harmonisation and management and chart the overall course of the Cooperation for the period up to the next TGC. The results are documented in a declaration, the Cooperation’s main policy paper until the next meeting.

Each TGC marks the end of a presidency term. At the 14th TGC in Wilhelmshaven (D), the German presidency ended. Denmark holds the presidency as of now.

The Wadden Sea Conference is an exchange platform for all stakeholders of the Wadden Sea Region held directly prior to the Council meeting.


The Wadden Sea Board

The Wadden Sea Board is the Cooperation’s governing body. It runs and oversees the work of the TWSC between sessions of the Trilateral Governmental Conferences, preparing, adopting and implementing the Wadden Sea Plan as well as policies and strategies.

The Board is chaired by an impartial chairperson, nominated by the presiding country and appointed by the Council. The chair rotates between the countries along with the presidency. There are four members appointed per country and four advisors with expertise and experience relevant to the Cooperation. The Board is further supported by advisors representing the NGO sector (currently Danish Ornithological Society, It Fryske Gea and WWF) and the Wadden Sea Forum (WSF).

Wadden Sea Board documents are available in Resources.

The current members of the Board are listed here.


Task Groups and other groups

The Wadden Sea Board appoints Task Groups to prepare expert topics for the Board and to undertake specific tasks, plans or projects. The current Task Groups are

  • Task Group Management (TG-M)
  • Task Group Monitoring and Assessment (TG-MA)
  • Task Group World Heritage (TG-WH)

In addition, the Cooperation has several Expert, Networking and (ad hoc) Working Groups to carry out specific monitoring, scientific and educational tasks. These are

  • Alien Species (EG-AS)
  • Climate (EG-C)
  • Data Handling (EG-Data)
  • Education (IWSS+NGE)
  • Flyway (WSFI-SG)
  • Fish (EG-Swimway)
  • Marine Mammals (EG-MM)
  • Migratory and Breeding birds (EG-MB/BB)
  • Partnership Hub (OPteamPH)
  • Salt marshes and dunes (EG-SMD)
  • Sustainable Tourism (NG-ST)

Wadden Sea Board


Anne-Marie Vægter Rasmussen

Deputy Director General, Environmental Protection Agency, Ministry of the Environment, Denmark


Nanou Beekman

National Representative to the Board, Director Rural Areas and Fisheries, Ministry of Agriculture, Nature and Food Quality, Netherlands

Martin Petersen

National Representative to the Board, Head of Department, Environmental Protection Agency, Ministry of the Environment, Denmark

Ilka Wagner

National Representative to the Board, Head of Division Marine Nature Conservation, Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMUV), Germany

Volker Brengelmann

Head of Unit nature and species protection, Lower Saxon Ministry of Environment, Energy, Construction and Climate Protection, Germany

Joost de Ruig

General Director Rijkswaterstaat North-Netherlands, Netherlands

Johan Hamster

Provincial Executive Gasexploitation (Overground), Agriculture and Fisheries, Nature and Landscape, Wadden and Waddenfund, and Internationalisation, Province of Groningen, Netherlands

Kristian Hansted

Head of Department, Danish Coastal Authority, Ministry of Environment, Denmark

Vera Knoke

Deputy for Marine Protection and National Park, Schleswig-Holstein Ministry for Energy Transition, Climate Protection, Environment and Nature, Germany

Janne J. Liburd

Professor, D. Phil. Ph. D., Department of Design and Communication, University of Southern Denmark, Chair National Park Wadden Sea, Denmark

Henrik Studsgaard

Representative of the Danish Wadden Sea municipalities, Director of Technical and Environmental Area at Esbjerg Municipality, Denmark

Bernd-Ulrich Netz

Director, Office for Nature Conservation, Green Planning and Energy, Hamburg Agency for Environment, Climate, Energy and Agriculture, Germany

Leo Pieter Stoel

Mayor of Ameland, Netherlands


Marco Rohde Brodde

Danish Ornithological Society, Denmark

Henk de Vries

Wadden Sea Team, Director It Fryske Gea

Preben Friis-Hauge

Chair WSF, Chair The Danish Wadden Sea Secretariat, Varde Municipality, Denmark

Hans-Ulrich Rösner

Wadden Sea Team, Director at Wadden Sea Office, WWF, Germany

Executive Secretary

Bernard Baerends

Executive Secretary, Common Wadden Sea Secretariat
+49 4421 9108 0