Characterisation of iron-bearing particles in the Lena River
NE Russia

8th March 2016
10.00, Nordenskiöldsalen

Iron (Fe) is an important micronutrient for primary production in the ocean. The Arctic Ocean is strongly affected by inflows from the surrounding boreal rivers and this governs the supply of major nutrients and important micronutrients. Riverine Fe is mainly transported in particulate from and the size and mineralogy of Fe particles governs their bioavailability on the continental shelf. The characteristics of Fe-bearing particles are a function of their origin and processing in the boreal catchment area. Climate change in the Arctic is predicted to alter the landscape of boreal river catchment areas which will alter the flow path and composition of constituents entering the Arctic Ocean. It is therefore important to characterize the present day Fe-bearing particles and understand their origin, in order to predict future changes to the flux of bioavailable iron entering the Arctic Ocean.


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