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Bongo survey of late larval stage pollockFOCI conducts biology surveys on a fixed grid.  Bongo tows sieve plankton, including fish larvae, from the water.  The contents are sorted, identified and counted.  Pollock larvae are often found in patches.  In some years, for example 1992, larvae were more abundant that in other years such as 1998.  The annual late larval pollock survey is an important component of FOCI's recruitment forecast.
 

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