[R] model of fish over exploitation

[John Sibert]

It looks like you are trying to fit Schaeffer model (a special case of the 
Pella-Tomlinsion general production model) to the data. Such models can be 
solved in a completely general way using ADModel Builder, and an example of 
the general production model application can be found at
http://otter-rsch.com/examples.htm#docs

Bon courage,
John

____________________________________

John Sibert, Manager
Pelagic Fisheries Research Program
University of Hawaii at Manoa
1000 Pope Road, MSB 313
Honolulu, HI 96822
United States

Phone: (808) 956-4109
Fax: (808) 956-4104
____________________________________

Washington DC
Phone: (202) 861 2363
Fax: (202) 861 4767
____________________________________

PFRP Web Site:   http://www.soest.hawaii.edu/PFRP/
email:  sibert at hawaii.edu