Fig. 4From: Impact of permafrost degradation on the extreme increase of dissolved iron concentration in the Amur river during 1995–1997Interannual variations in annual/seasonal dissolved iron (dFe) concentrations in the Amur River. a Annual, b late spring (April, May, June; AMJ), and c late summer (July, August, September; JAS) mean dFe concentrations. Error bars show the standard error of the data. Data from 2005 are missingBack to article page