BIO 2129 Lecture Notes - Lecture 12: Isocline, Ecological Niche, Herbivore
1 Nov 2016
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Document Summary
Abiotic environment alters where we find species, as well as their abundance. Many other things can also affect distribution and abundance of species. Intraspecific : between two members of the same species. Interspecific : between two members of different species: resource competition. When a resource is in limited supply. Direct harm to other individuals e. g. cheetahs and lions killing each others babies. Competition between species creates differences between the fundamental niche and. The set of resources that can be used by a species is its niche realized niche of a species. Two species with identical niches cannot exist indefinitely. If two species" niche overlap is too great, competition drives one extinct. This principle arises from mathematical models of competition . What about in the presence of a competitor. Population growth drops proportional to the strength of a competition. Reduce maximum population size when competitor are around. Who wins, who loses, do they find a way to get along.
