ABSTRACT
In the preceding chapters we have discussed individuals representative of either different classes (age or size) of a natural population or different batches in a reared population. Thus, in the two cases (nature and aquaculture) we have used the same term population: this should be justified. After describing the static variables of state of a population, we shall describe their kinetics. Lastly, we shall tackle the analysis of methods of study of the principal components of an energy budget, or variables of flux, in a population.
