3.- Additional tools

"Additional tools" include tools for two kinds of calculations: On one hand they allow you perform calculations that are necessary for the estimation of stocks, as the length - weight regressions tool. On the other hand, they facilitate calculations, analysis and inferences once the stock and structure of the population studied are known.

• 3.1.- Length - weight regressions

• 3.2.- Mortality calculation

• 3.3.- Evolution of populations