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Summary

To calculate the status of global fish stocks from the Watson 2019 (v5) catch data we use catch-MSY (CMSY) developed by Martell and Froese (2012). This model requires catch and resilience information for each stock. Stocks are defined by FAO areas and are limited to only those records where catch is reported at the species level.

The datalimited R package, developed by Sean Anderson, is used to run CMSY.

Load catch data

Read in catch data aggregated from half degree cell to OHI region catch_data_prep.Rmd.

Catch-MSY

If the CMSY values have already been calculated for each stock, this step can be skipped:

Take output and format:

Explore why there are some NAs (I think non convergance)