Royal Netherlands Institute for Sea Research
Royal Netherlands
Institute for Sea Research

Wadden Sea Long-term Ecosystem Research

In the Wadden Sea, many parameters of the physical, ecological and socio-economic system are monitored by various institutions. These measurement efforts are not always well aligned and the data are not always fully accessible. 

The project

Wadden Sea Long-Term Ecosystem Research (WaLTER) is a combined initiative of a number of institutes and organisations that carry out multiannual measurements and research in the Wadden Sea area. The aims of the project are the development of a blueprint for the fundamental monitoring necessary for important themes in the Wadden Sea area, and a data portal for Wadden data. Discussions take place between involved parties (partners, advisory board, feedback groups) and other initiatives at the national, trilateral and international levels.

WaLTER platform

In 2015 WaLTER has launched an online platform (developed by BW-H) which provides advice on fundamental monitoring of the Wadden Sea area (in 12 themes) and access to a dataportal (developed by MARIS) which supplies internationally standardised and open access to data-sets on long-term field observations in coastal seas. Various functional data and information products (tools) have also been developed for policy- and decision-making, and science.

Basismonitoring Wadden

In 2018 the WaLTER project formally ended. The WaLTER platform, including the data portal, tools and publications will remain in the air until the end of 2020.  The continuation of the tools EVA (Evaluation, Supply & Demand), (and WaD (Wadden Dashboard) are included in the collaboration agreement Basismonitoring Wadden. One of their core objectives is to provide access to monitoring data. They will continue the WaLTER developments.  The WaLTER data series (Maps portal) are integrated in the Basismonitoring Waddenviewer.

  • Wadden Dashboard

    WaLTER Dashboard

    Wadden Dashboard (WaD) offers interactive visualisations of long-term monitoring data for relevant indicators to support sustainable management of the Wadden Sea Region.

  • Intertides


    InterTides most basic function is interpolation between water levels measured at

    the tidal gauge stations in and around the Wadden Sea.

Project information
Linked department:
Linked centre of expertise:
1 Jan 2011 - 28 Feb 2017
  • Common Wadden Sea Secretariat (CWSS), Germany
  • Institute for Marine Resources & Ecosystem Studies (IMARES), The Netherlands
  • Radboud University Nijmegen, The Netherlands
  • Rijkswaterstaat (RWS), The Netherlands
  • SOVON Vogelonderzoek Nederland
  • University of Groningen (RUG), The Netherlands

Meet the team

Raad de, Ingrid
Research Assistant