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. 2021 Dec 16;51(2):355–369. doi: 10.1007/s13280-021-01673-0

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Variability in a TDN* and b N* with changing salinity through the Lena Delta and into the Laptev Sea with nitrate plotted in colour. Variability in c salinity and d N* in the upper 100 m of the Lena Delta and Laptev Sea with salinity plotted in colour. Data from the Lena Delta are from Sanders et al. (2022). A mixing line is added to b between the marine (N* = -3.3 μM, salinity = 34.8) and riverine endmembers (N* = 2.2 μM, salinity = 0)