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Seasonal variations in nitrate isotope composition of three rivers draining into the North Sea

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Academic year: 2017

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Table 1. N-NO − 3 discharge and load weighted isotope values for the respective sampling periods subdivided into seasons.
Table 2. Correlation matrix (Pearson’s) of biogeochemical parameters of the rivers Rhine, Weser and Ems.
Fig. 1. Sampling locations at the river Rhine, Weser and Ems.
Fig. 2. (a) Seasonal cycles of NO − 3 concentrations, δ 15 N-NO − 3 , δ 18 O-NO − 3 , δ 15 N-PN and δ 18 O- O-H 2 O of the Rhine River
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