Tortell, Philippe D.; Payne, Chris; Gueguen, Celine; Strzepek, Robert; Boyd, Philip W; Rost, Bjorn
We report the results of laboratory and field studies examining inorganic carbon (Ci) utilization by Southern Ocean phytoplankton. Both in monospecific laboratory cultures of diatoms and Phaeocystis antarctica and in natural assemblages in the Ross Sea, Ci uptake by phytoplankton was dominated by direct HCO3- transport. The contribution of HCO3- transport to total Ci uptake ranged from 65% to 95%, with an overall average of ∼80%. There was no significant difference among diatoms and Phaeocystis...[Show more]
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