ESS101C
Prof. Jin-Yi Yu
How Glaciations Increased Productions Near Antarctica?
qThe deep-ocean circulation in the Antarctica brings abundant nutrients up into the surface water, which is not fully utilized by photosynthesis due to the brief summer seasons.
qDuring glacial intervals in the Antarctic region, increased carbon pumping out of surface water could occur either because
q      (1) nutrient-rich waters remained at the surface longer, or
q      (2) higher glacial nutrient levels stimulated more productivity.