Competition

Consider competition betwenn two species. We say that two species compete if the presence of one of them is detrimental for the other, and vice versa. The underlying biological mechanisms can be of two kinds; I exploitative competition: both species compete for a limited resource. F Its strength depends also on the resource. I Interference competition: one of the species actively interferes in the acess to resources of the sother. I Both types of competition may coexist. Roberto A. Kraenkel (IFT-UNESP) III SSSMB São Paulo, Feb 2014 3 / 32 Models for species in competition We are speaking of inter-specific competition Intra-specific competition gives rise to the models like the logistic that we studied in the first lecture. In a broad sense we can distinguish two kinds of models for competition: I implicit: that do not take into account the dynamics of the resources. I explicit where this dynamics is included. I Here is a pictorial view of the possible cases