Pore-water saltmarsh

It is important to realise that the flume method should not be used to estimate the overall flux from the saltmarsh. It is only suitable for assessing the importance of surface processes, such as diffusion of substances between pore-water and inundating tidal water, uptake by vegetation and wash off" processes. The results can not be extrapolated to determine the total flux between the saltmarsh and the coastal water, as the nutrient transforming processes associated with the marsh surface only play a small role in determining the overall nutrient flux (see Figure 4.2). 

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