BIOL 1030 Lecture Notes - Lecture 27: Exponential Growth, Ecological Niche
19 Apr 2018
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Disperse to new habitat before being eliminated: when two species use different resources, coexistence is possible. If they use completely different resources no competition. If they use overlapping sets of resources, competition is moderate, e. g. - species 1 eats small to medium seeds. Species 2 eats medium to large seeds. Fundamental niche: the range of conditions that a species can survive in, positive growth rate (dn/dt>0, by itself . T. confusum"s fundamental niche includes both warm/moist; and cold/dry conditions. Predator prey cycle: the cycles tend to be wildly unstable, a joint equilibrium is theoretically possible star, but any disturbance away from that joint equilibrium starts the cycles, remember, d and r depend on the environment. It is typically unlikely for predators and prey to directly control each other"s populations: some outside factor is needed to stabilize the system. If prey have a carrying capacity - (and of course they do)
