Major consequences of such changes over regional scales will probably include (1) reductions in primary production combined with (2) shifts from diatom - dominated (low SA: V ratio) phytoplankton assemblages with high POC - export efficiencies to
picoplankton communities (high SA: V ratio) characterized by low export efficiencies (Smith et al., 2008; Morán et al., 2010; Morán et al., 2015).