Scotian Shelf productivity

Mills, E. L., and Fournier, R. O. (1979). Fish production and the marine ecosystem of the Scotian Shelf eastern Canada. Mar. Biol. 54, 101—108. 

Scotian Shelf. Primary Production. Figure 6 shows the sharp boundary zone separating coastal water and warmer slope water charac-... 

Additional calculations (10) indicated that the movements of the intrusions produced localized turbulent mixing ascribed to shear instabilities. These mixing events, driven by the M2 internal tides, caused a potentially efficient mechanism for vertical transport of heat and salt as input to the Scotian Shelf. These vertical-mixing events, which continually replenish nutrients (e.g., nitrates, nitrites, silicates, and inorganic phosphates) from slope waters below, can explain the anomalously high productivity occurring at the front. 

Figure 10. Vertical Batfish profiles taken from the transect of Figure 6 on the Scotian Shelf. The profiles are separated into the following components chlorophyll, production estimated in two Ways from a chlorophyll/ light model, small copepods (S.C.), and all stages of C. finmarchicus (13).

Figure 11. The depth of maximum chlorophyll, production relative to small copepods, and C. finmarchicus. The tow began in coastal waters of the Scotian Shelf (left side of plot) and the course was reversed at the front. There are -- 90 vertical Batfish profiles in the transect (13).

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