Coexistence theory | Wikipedia audio article
Channel: wikipedia tts
Date: 31/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Coexistence_theory


00:01:40 1 Types of coexistence mechanisms
00:06:52 1.1 Example calculation: Species competing for resource
00:19:21 2 Stabilizing mechanisms
00:19:27 3 Empirical evidence
00:24:09 4 Neutral theory and coexistence theory
00:28:05 5 Cultural coexistence theory
00:30:04 6 References



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SUMMARY
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Coexistence theory is a framework to understand how competitor traits can maintain species diversity and stave-off competitive exclusion even among similar species living in ecologically similar environments. Coexistence theory explains the stable coexistence of species as an interaction between two opposing forces: fitness differences between species, which should drive the best-adapted species to exclude others within a particular ecological niche, and stabilizing mechanisms, which maintains diversity via niche differentiation. For many species to be stabilized in a community, population growth must be negative density-dependent, i.e. all participating species have a tendency to increase in density as their populations decline. In such communities, any species that becomes rare will experience positive growth, pushing its population to recover and making local extinction unlikely. As the population of one species declines, individuals of that species tend to compete predominantly with individuals of other species. Thus, the tendency of a population to recover as it declines in density reflects reduced interspecific competition (between-species) relative to intraspecific competition (within-species), the signature of niche differentiation (see Lotka-Volterra competition).