the Changing Arctic Ocean programme is to understand how the changing physical environment will affect the large-scale ecosystem structure and biogeochemical functioning of the Arctic Ocean. The two key [...] field analysis in the Arctic Ocean . Arctic Special Issue, Phil Trans Royal Soc. (submitted) Literature: Castellani, G., M. Losch, B. A. Lange, and H. Flores (2017), Modeling Arctic sea-ice algae: Physical [...] applied to understand how the Arctic marine system will respond to ongoing changes that include thinning of sea ice, declines in nutrient inventories and freshening of Arctic Ocean surface waters. We will answer