BIOL 111 Lecture Notes - Lecture 14: Interspecific Competition, Pedogenesis, Primary Succession
9 Oct 2014
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Document Summary
Biol 111 - introduction to ecology and the environment - lecture 14: community. Resources partitioning adapt to reduce competition for resources and develop more specialized niches. Predation predator species feed on all or parts of other species called prey. Predator strategies: pursuit, stalk and ambush, camouflage, immobilization. Individual: prey as individuals can be clearly harmed by the predators that attack them. Population: at the population level predation (feeding on prey) plays a role in evolution by natural selection. Predation can benefit the prey species because predators often kill the sick, weak, aged and then least fit members of the population. Predator and prey models are examples of just a few ways species interact. Often have more developed or diverse mechanisms for survival. Over time new environmental conditions can cause change in community structure that lead to one group of species being replaced by another. Ecological succession - gradual change of species composition of a given area.
