Extended Data Fig. 5: Flow-normalized trends in annual constituent flux.
From: Recent trends in the chemistry of major northern rivers signal widespread Arctic change
Trends are provided for the three focal constituents (alkalinity, dissolved organic carbon [DOC], and nitrate [NO3−-N], for each of the six great Arctic rivers. The solid line indicates the mean, and shading indicates 90% confidence interval from the block bootstrap analysis. Asterisks indicate block bootstrap-assessed trends that are: ***highly likely (posterior mean estimate \(\hat{\pi }\) <0.05 or >0.95); **very likely (\(\hat{\pi }\) 0.05–0.10 or 0.90–0.95); or *likely (\(\hat{\pi }\) 0.10–0.33 or 0.66–0.90), with percentage change in constituent flux indicated for the period of record. Where no percentage change is shown, trends were assessed to be about as likely as not (\(\hat{\pi }\) 0.33–0.66).
