Photosynthetic carbon fixation ~50 Pg C/y ocean-wide, comparable to terrestrial. Limited mostly by nitrogen (tropics) or iron (HNLC regions: Southern Ocean, equatorial Pacific, subarctic Pacific). Controls atmospheric CO₂ via the…
Photosynthetic carbon fixation ~50 Pg C/y ocean-wide, comparable to terrestrial. Limited mostly by nitrogen (tropics) or iron (HNLC regions: Southern Ocean, equatorial Pacific, subarctic Pacific). Controls atmospheric CO₂ via the…