Seasonal variations in C:N:Si:Ca:P:Mg:S:K:Fe relationships of seston from Norwegian coastal water: Impact of extreme offshore forcing during winter-spring 2010

Elemental composition of seston at 5 m from October 2009 to March 2012 in the Raunefjord. Carbon-C (a), nitrogen-N (b), phosphorus-P (c), C/N (d), C/P (e), N/P (f), calcium-Ca (g), silicon-Si (h), sulfur-S (i), iron-Fe (j), potassium-K (k), and magnesium-Mg (l). Average values for the time series are shown by a horizontal dashed line, in the case of the C/N, C/P and N/P ratios (at/at), the Redfield values are also shown by a horizontal dashed line. The intense upwelling period in 2010 is marked by red vertical dashed lines.285