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Justin,

This type of calculation and others like it are described in detail in 
Ricker, 1975.  Chapter 2 is what you need to read. 

Ricker W.E. 1975. Computation and interpretation of biological 
statistics of fish populations. Fisheries Research Board of Canada 
Bulletin No. 191.

Ed



Edward J.  Martino
University of Maryland Center for Environmental Science
CBL


Johnston, Justin C wrote:
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> If you reply to this message, it will go to all FISH-SCI members.
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> List,
>  
> I was wondering if anyone had information on calculating age-1
> equivalents for use in economic models?  I have seen a few formulas for
> doing this, but they don't really make sense to me.  If anyone knows of
> a source that explains clearly how to calculate age-equivalents (for
> instance: convert 150 age-3+ largemouth bass to age-1 equivalents) I
> would appreciate you sending me a link or citation.
>  
> Justin C Johnston
>
>   
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