Importance of intertidal sediment processes and porewater exchange on the water column biogeochemistry in a pristine mangrove creek (Ras Dege, Tanzania)Transient, tidal-scale, nitrogen transformations in an estuarine turbidity maximum-fluid mud system (The Gironde, S.W. France)Carbon dioxide in European coastal watersDistribution, origin and cycling of carbon in the Tana River (Kenya): a dry season basin-scale survey from headwaters to the deltaDynamics of organic and inorganic carbon across contiguous mangrove and seagrass systems (Gazi Bay, Kenya)Emission of CO2 and CH4 to the atmosphere by sediments and open waters in two Tanzanian mangrove forests