Figure 1: Latitudinal distribution of cellular nutrient uptake and CO2 fixation rates of the two dominant bacterioplankton groups.
From: Dominant oceanic bacteria secure phosphate using a large extracellular buffer
Latitudinal distribution of nutrient uptake rates of SAR11 (a) and of nutrient uptake and CO2 fixation rates of Prochlorococcus (Pro) (b) cells in the North Atlantic subtropical gyre on the 2010 cruise. The nutrients were methionine (Met), ATP and inorganic phosphate (Pi). Only cellular uptake rates of inorganic phosphate (Pi 2012) were measured on the 2012 cruise. Black and grey dashed lines indicate median rates of Pi uptake in the phosphate-depleted centre of the gyre during the 2010 and 2012 cruises, respectively. Blue horizontal tick lines indicate boundaries of the central gyre. Error bars indicate propagated standard errors of combined measurements of microbial nutrient uptake rates, cell abundances and radiotracer concentrations in flow-sorted cells.
