Deo Florence Onda

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1 Introduction High latitude fjords are areas of strong land-ocean interactions and at times biological productivity hotspots. Environmental properties show significant seasonality including irradiance and freshwater input (Matthews and Heimdal, 1980; Cottier et al., 2010). During the polar night, light is limiting for primary production and deep mixing resupplies nutrients to the surface, allowing for strong and immediate phytoplankton growth once the light returns (Cottier et al., 2010).