Competition Between Paramecia Tutorial

Load P2b, then press [E] and load the two Paramecium models.


In this experiment, the two species of Paramecium were able to coexist near a stable community equilibrium. However, competition between the two species was asymmetrical, with P. aurelia obtaining a higher equilibrium density due to its greater maximum per-capita rate of increase (A1 = 0.89 versus A2 = 0.73) rather than its competitive ability (C12 = -0.0025 versus C21 = -0.0015). In other words P. aurelia had a growth rate advantage and P. caudatum a competitive advantage, and this enabled them to coexist.

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