BIOL 2060 Lecture Notes - Lecture 10: Logistic Function, Intraspecific Competition, Interspecific Competition
19 Feb 2016
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Document Summary
Interactions between organisms or populations that required the same resources: basic resources for survival, further resources. Competitors can harm each other: directly: interference (contest) competition. Fighting another male to mate with a specific female: indirectly: resource (scramble) competition. Making it to a limited resource before another individual, other individual ends up hindered due to lack of resource. Competition is a negative interaction: a harms b, b harms a, (-/-), but there can still be winners. Competition can affect the distribution and abundance of a and losers population: effect density-dependent population growth, distribution patterns, zonation, succession, realized vs. fundamental niche. Organisms don"t exist alone in nature and are affected by interactions with other organisms: populations can change in the presence of another species population. If a species cannot avoid competition, it must evolved competitive ability. Intra-specific competition: competition between individuals of the same species, important for density-dependent dynamics.
