====== Definition ======

===== length based population =====

===== Age based population =====

===== Seasons =====

Seasons are used for the **reproduction** and the period where **the individuals are changing class**.
If the population is length based, the individus will change class every month, but the coefficient are given by season, if there is a season were the growth is higher than during the rest of the year, it should appear here.

If the population is age based, the individus will change classes only if the box is ticked. If the season is bigger than one month, the individu will change class only the first month of the
season.

The reproduction can be distributed over the season, using the distribution of the reproduction (coefficient)

A **difference in the catchability during the year** could also be a reason for creating a new season.

====== default Value ======

====== Estimation Methods ======

====== ISIS Examples ======

====== References ======