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BG4.3 | Interconnection, exchange and element cycling at shallow coasts
EDI
Interconnection, exchange and element cycling at shallow coasts
Convener: Maren Voss | Co-conveners: Sara E. Anthony, Gerald Juransinski, Fereidoun Rezanezhad
Coastal wetlands including the adjacent shallow off-shore areas are of high ecological and recreational value. At the same time, they are heavily impacted by direct and indirect effects of anthropogenic activities such as drainage and eutrophication. Rising temperatures and sea levels will also strongly alter their hydro(geo)logy as well as their biogeochemistry. Nutrient transport, microbial processes, and trace gas emissions are driven by hydraulic connectivity, sediment structure, and wave action.

Plant and animal life along shallow coasts is impacted by submarine groundwater discharge and sediment transport on the seaside and flooding with saline water on the land side, both of which change the species composition, diversity and overall biomass. Flooding of low lying land can easily generate new coastal waters but with unknown impacts from the legacy of the flooded soils. To understand the details of these processes and their interrelations on land and in the coastal sea, field studies, experiments, and model evaluations are likewise necessary. We therefore invite presentations from all scientific areas focusing on land-sea interactions at shallow coasts across the coastal continuum. Interdisciplinary studies linking, for instance, hydrodynamics with biogeochemistry are highly welcome.