Climate change and enhanced sea level rise may seriously impact the structure, functions and characteristic biodiversity of the Wadden Sea ecosystem, as well as the safety of the inhabitants in the region. Addressing these impacts as a cross cutting theme is a major challenge for the Trilateral Cooperation.
Trilateral Cooperation relating to the impacts of climate change started in 1998 with the establishment of the trilateral working group CPSL (Coastal Protection and Sea Level Rise). Between 1998 and 2010, the CPSL - in which experts on coastal protection, nature protection and (as of 2006) spatial planning cooperate - prepared three reports, delivering expert input to governmental conferences. The reports address the impacts of sea level rise on the Wadden Sea ecosystem (CPSL report 1, 2001), best practices to deal with enhanced sea level rise (CPSL II report, 2005), the relevance of spatial planning for managing the impacts of climate change and the role of sand nourishment for compensating sea level rise (CPSL III report, 2010).
In 2011, the work of the CPSL was continued by the Task Group Climate (TG-C). TG-C has drafted a trilateral strategy on increasing the resilience of the Wadden Sea to the impacts of climate change, which was adopted by the 12th Wadden Sea Conference in 2014.