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Lecture 8

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Environmental Studies
ENVS 1200
Anders Sandberg

10/28/2013 6:25:00 AM Population: Interactions Midterm Question:  Competitions are animals plants insects move for a piece of pie. (5 syllables, 7, 5) – ecological Terminology  Intraspecific competition (within a species) o Interference competition (A vs. B) this has a negative impact on both of them (expending energy) o Exploitative competition (indirect) (A vs. B)  The more resources an individual has the more fit is it (fitness=ability to reproduce)  Interspecies competition (between species) Intraspecific: Going to have competition if resources are limited – when you hit K (max pop.) you will get a density dependent response (such as mortality). Competitive Exclusion Principle: States no two species identical ecologies can coexist OR Two species with similar needs for the same limiting recourses cannot coexist. Niche: combination of variables that allows the individual to survive – biotic and abiotic If the habitat is an organisms address ,then its niche is its job.  Fundamental Niches: (where physical conditions are ideal for a species –in the absence of interaction/comp
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