ATRACTOR

The pouts represent here all the fish that are edible, which are the most wanted by the fishermen.

The pouts feed on algae and other substances that abound in the sea. Thus, without intervention from the outside, the pouts reproduce and their quantity increase as time passes.

(Click on the figure to observe the evolution of the number of pouts over time, depending on their natural growth.)

The natural increase of the quantity of pouts is perturbed by changes in the ecosystem, such as the presence of a species that feeds on pouts.

(Click on the figure to observe the evolution of the number of pouts over time.)