insights into the carbon storage potential in the German oceans in the future. In the third part, the status of climate change effects in the German North Sea and Baltic Sea, as well as the impact of climate [...] marine ecosystems, and the seafloor is referred to as Blue carbon. This study presents the results of a literature review on published data related to the Blue carbon potential of different ecosystems and [...] biotopes along the German coasts and within the German EEZ as well as on climate change impacts on these. The focus lies on salt marshes and seagrass beds, as well as the possible potential of macroalgae,