■'^JSIr 



-^»- NOAA Technical Memorandum NMFS F/NWC-41 



A Single Species, 



Biomass Based, 



Time Dependent Model 



for Investigating the Effects of Fishing 



on the Dynamics of Fish Biomass 



by 



Taivo Laevastu 



and 



Richard J. Marasco 



January 1983 



W H I 



DOCUMENT 



COLLECTION 





U.S. DEPARTMENT OF COMMERCE 



National Oceanic and Atmospheric Administration 

 National Marine Fisheries Service 



This TM series is used for documentation and timely communication of preliminary results, 

 interim reports, or special purpose information, and has not received complete formal 

 review, editorial control, or detailed editing. 



