{"refrec":{"BRefID":225610,"RR":"<b>Struyf, E.; Gribsholt, B.; Boschker, E.; Dehairs, F.; Meire, P.</b> (2011). N and Si cycling in freshwater tidal marshes, <b><i>in</i></b>: Heip, C. <i>et al.</i> (Ed.) <i>Aspects of coastal research in contribution to LOICZ in the Netherlands and Flanders (2002-2010). LOICZ Research & Studies,</i> 38: pp. 155-161","BEntID":217333,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Heip, C. <i>et al.</i> <i>Aspects of coastal research in contribution to LOICZ in the Netherlands and Flanders (2002-2010). 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It clearly revealed the dominant role of microbes in initial nitrogen retention in marsh ecosystems. Parallel study of silica cycling revealed that tidal marshes act as biogenic Si recycling surfaces, importing biogenic Si while exporting dissolved Si. Export of dissolved Si is greatest during summer and spring, when dissolved Si concentrations in inundating waters are depleted by diatoms. Tidal marshes thus buffer estuarine dissolved Si in times of limitation. We can conclude that the studied marsh had an increasing effect on the Si:N ratio in flooding waters. Export of DSi and import of total dissolved nitrogen (DIN) contributed about equally to the increase of the Si:N ratio. 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