ANTH 1010H Chapter Notes - Chapter 5: Ring Species, Political Ecology, Population Ecology
3 Sep 2013
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Anthropology chapter 5 summary human interaction with environment. The significance of mitochondrial dna lies in the fact that it is passed unchanged each generation from mother to daughter. Many species are ring species," which means that adjacent populations can interbreed but nonadjacent ones cannot. Systems with high resilience but low stability may undergo continual and profound changes but still continue to exist as a system. Systems with high stability but low resilience, on the other hand, may show little change when suffering some disturbances but then collapse suddenly. The most resilient ecosystems are resilient only to a point beyond which they collapse. Population ecology, or demography, is a field that describes the dynamics of population growth, decline, and change in age and sex structure. Human-dominated ecosystems are considerably less resilient than other ecosystems because they can be maintained only by constant expenditure of human energy and ingenuity.
