Seagrass systems: stability of seagrass systems against anthropogenic impacts
The study presented here examines which factors directly or indirectly connected to eutrophication, are relevant to the deterioration of seagrass populations in the Baltic Sea/Greifswalder Bodden. More particularly it is a study of the interaction effects of seagrass autotrophic competitors (epiphytic algae, drifting macroalgae and phytoplankton) on seagrass. These are interesting yet largely studied and were, in this study, investigated through the field observations and experiments of a seagrass population in the Greifswalder Bodden, Germany. Additionally to get a better understanding of the current state of the seagrass meadows and the light conditions in the Bodden, the historical development of the macrophyte populations under the influence of the eutrophication and the changing light climate were analysed over the last 25 year and discussed according to the model of "ecosystem shifts".