The PhD thesis of Nina Welti was selected by the Austrian newspaper "Presse" as PhD thesis of the week. The title of her thesis is "Nitrogen cycling in restored and disturbed riverine floodplains". In her thesis Nina Welti demonstrated how floodplain restoration alters the nitrate removal pathways and ultimately N2O and N2 emission. The thesis is based on field work, experimental approaches and an integrated model showing hot spots of denitrification in floodplains. The results of her research are presented in 4 international scientific publications.