An Index Method
(AIM)

An Index Method (AIM) allows the user to fit a relationship between time series of relative stock abundance indices and catch data. Underlying the methodology is a linear model of population growth, which characterizes the population response to varying levels of fishing mortality. If the underlying model is valid, AIM can be used to estimate the level of relative fishing mortality at which the population is likely to be stable. The index methodology can used to construct reference points based on relative abundance indices and catches and to perform deterministic or stochastic projections to achieve a target stock size.

AIM was developed by Dr. Paul Rago at the NMFS Northeast Fisheries Science Center.

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AIM Version 2.1.1 (September 2009)

• Upgraded to Visual Studio 2008 and Microsoft .NET framework

• Sensitivity Analysis on the numbers of years used to smooth Indices of Abundance and Relative Fishing Mortality.

• Chi Squares Test

AIM Version 2.0.2 (June 2008)

AIM Version 1.5 (April 2007)

• Includes a new grid editing tool with easier data entry and copy/paste abilities. 

• Ability to save files with spaces in the file name, and use spaces in folder names.

• Upgraded version of the plotting package.