Phytoplankton gross production

Figur 33 1 Physical and biological upwelling response simulated by the Wroblewski (1977) 2-dimensional coastal upwelling model (A) The circulation in the transverse plane normal to the coast, the bottom topography, and the wind stress. The maximum u and w velocities in the field are —2.9 cm s and 1.4 x 10 cm s , respectively. (B) The daily gross primary production of the water column. (C) The distribution of phytoplankton. Contour intervals are 1 jimol N 1. Redrawn with permission from Wroblewski (1977).

Fig. 3.5 Relationships between phytoplanktonic production, respiration and depth (after Lalii Parsons 1997).The compensation depth is where the rate of respiration equals that of production.The critical depth is where the total respiration in the water column above equals the gross primary production (i.e. the areas under the two shaded curves are equal).

Figure 7.8. Effect of crude oil (10 mg L ) on the in situ gross primary production of phytoplankton in the Beaufort Sea. (From Hsiao etal, 1978.)...

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