THE BIOLOGICAL CO_2 PUMP IN SEASONALLY ICE-COVERED WATERS (17th Symposium on Polar Biology)

Pools of biogenic carbon in oceans have been defined by reference to the time elapsed between the photosynthetic uptake of carbon and its return as carbon dioxide to surface waters or the atmosphere (i.e. turnover time). The three pools are: short-lived organic carbon (10^2 years). In seasonally ice-covered waters, as in other aquatic environments, primary production occurs over a large range of sizes, which can be partitioned into three classes, i.e. large cells (>5 μm), small cells (