Hydrographic data and water samples collected during casts with a CTD-rosette system (SBE911plus equipped with a fluorometer, transmissometer, oxygen sensor, and a PAR sensor)
Nutrient samples were run at sea using a Lachat QuickChem 8000 flow-injection analyzer equipped with the following methods:
Phosphate 31-115-01-1-I
Silicate 31-114-27-1-B
Nitrate+Nitrite 31-107-04-1-A
Nitrite 31-107-05-1-A
Particle (particulate N and C) samples for stable isotope (d15N, d13C) were collected and analyzed following methods in Montoya et al. 2002.