Abstract
The methods by which fishery scientists estimate fish population size are reviewed. These include tagging, cohort analysis, random sampling and catch per unit of effort indexes. Elementary statistical considerations are introduced to discuss some of the properties of the methods. For example, we model the effect of spatial patchiness on random sampling and the effect of sample size on tagging estimates. Next, the Poisson, negative binomial, and gamma distributions and their interrelations are discussed. In particular, these three distributions form a do-it-yourself kit for making models of the fisherman's catch per trip. One policy tool suggested for fishery regulation is the auction of licenses. Smiley has extended the bidding models of Wilson and Rothkopf and applied them to empirical data on offshore oil lease bids. We discuss Smiley's model, which could provide information about fishermen's expectations and learning about abundance, if and when auction schemes are implemented for fisheries. Finally, w...
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