Division of oceans into provinces based on primary production and d fish production(Ryther, 1969 Province Percent Area(km2) Mean productivity Total productivity Fish (g Carbon n (10° tons Carbo Production fixation (Tons fres veight) Oceanic90.0326×10° 16.3 16×103 Coastal,9.936×10 00 3.6 12×10 Upwelling036×105 300 0.1 12×10 24×107Division of oceans into provinces based on primary production and fish production (Ryther, 1969) Province Percent age of fixation Area(km2 ) Mean productivity (g Carbon m-2yr-1 ) Total productivity (109 tons Carbon yr-1 ) Fish Production (Tons fresh weight) Oceanic 90.0 326× 106 50 16.3 16× 105 Coastal 9.9 36 × 106 100 3.6 12 × 107 Upwelling 0.1 3.6 × 105 300 0.1 12 × 107 Total 20 24 × 107