LTPYLong-Term Potential Yield (fish industry)
LTPYLiberty Township Powell YMCA (Young Men's Christian Association) (Ohio)
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Abundances for 30 percent of the stocks must be allowed to increase to near the LTPY level, and abundances for about 10 percent should be expected to decline toward the LTPY level as they become fully utilized.
None of the fish groups off Alaska are considered overutilized, but 20 percent are below the level necessary to produce the LTPY because of either historic overutilization or natural variability.
Even some of the populations that are no longer overutilized are below the abundance level necessary to produce their LTPY, such as rockfish off Alaska and Pacific sardines.