INTRODUCTION 9 



the dynamics of the fishery. In addition, numerous studies by tagging 

 had been made of the migrating behavior of the fish. Without such 

 a background, the analysis would have been impossible and full 

 use of all these pertinent data were made. The principal steps in the 

 biostatistical analyses were: 



1. Determine recent catches from this resource by species, races, 

 time, location, and gear, and the fishing effort by time, location, 

 and gear. 



2. Estimate from best available data the timing, speed, and route 

 of migration by species and race. 



3. Using factors determined from recent fishery data, simulate 

 the runs of salmon, the fishing activity, and the catch under 

 various conditions on the IBM 709 computer in order to 

 estimate the catches that may be expected by different numbers 

 and kinds of fishing gear. 



4. Hindcast recent runs to test the computer simulation. 



The economic analyses were under the direction of James 

 Crutchfield. They started from a much smaller background of infor- 

 mation than was available for the biostatistical analyses. Two things 

 especially were needed — first the estimates of catch by vessel under 

 all anticipated conditions which could be developed under Part 3 

 of the biostatistical analyses, and second, adequate income tax data 

 from a representative sample of men and vessels. The principal 

 steps were: 



1. Determine recent net and gross earnings of men and vessels 

 using each type of gear. 



2. Estimate net and gross earnings and changes in economic 

 yield with varying numbers of vessels and varying catches. 



3. Estimate economic effects on other fisheries and transitory 

 economic effects of proposed remedies. 



The legal studies proceeded under the direction of Robert L. 

 Fletcher. This work was greatly assisted by the State Department 

 of Fisheries, which obtained statutory and regulatory material from 

 many other states as a basis for comparative study and also fur- 

 nished a detailed history of regulation in the State of Washington 

 and other miscellaneous information. 



Based on this material and other material furnished by the 

 Fisheries Research Institute or available in the library of the School 

 of Law, an extensive study was made of the following general topics: 



