Food webs do not only show the transferring of energy through the organisms, but it also shows the predator-prey relationships. This is important because this is one of the main ways a specie population is maintained. In the rainforest, there is a high biodiversity, so there is a large amount of organisms occupying the area. An example of this would be the jaguars prowling the area. They feed on preys such as tapirs and peccaries. Because of this, the number of peccaries and tapirs living in that area are kept to a certain balance. If the predators are lost, the populations of these preys would steadily increase causing there to be less plants in the area. Fewer resources could cause some organisms population, which depends on this source for food, to deplete. So if this keystone specie is lost, the whole ecosystem is affected.
Not only is predation observed, but symbiotic relationships are also seen: mutualism, commensalism and parasitism. An example of mutualism would be the