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APES Character Displacement vs Resource Partitioning

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Jacqueline Nuzzo

on 12 October 2012

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Transcript of APES Character Displacement vs Resource Partitioning

Katharine Percy
Jacqueline Nuzzo
Allie Schaal Character Displacement vs.
Resource Partitioning Character Displacement Character displacement stems from the competitive exclusion principle, saying that in order for species to exist, their ecological niche must differ. If not, one species will eliminate or exclude the other through competition. Resource Partitioning Applies to the field of ecology,
refers to the process by which natural selection drives competing species into different patterns of resource use or different niches. The concept of resource partitioning, as originally developed, relates to evolutionary change in species in response to selection pressures generated by inter specific competition Recently it has taken on another meaning, one that is not defined in terms of evolutionary function, and which refers to differences in resource use between species regardless of why they are different. Ecologists are frequently in the position of explaining the presence of species in an area by reference to the by-products of their adaptive evolution. When differences among similar species whose distributions overlap geographically are accentuated, but when don't overlap the characteristics are lost. Results from evolutionary changes driven by competition among species for a limited resource (e.g. food) The End
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