BIO120H1 Chapter Notes - Chapter 4: Niche Construction, Warder Clyde Allee, Predator Satiation

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18 Apr 2016
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BIO120H1 Full Course Notes
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BIO120H1 Full Course Notes
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Over 25% of all amphibians are endangered. Human population doubled in less than 50 years. Population ecology is the study of questions about what factors affect population and how and why a population changes over time. Has deepest historic roots and its richest development in the study of population growth, regulation and dynamics, or demography. Human population growth serves as an important model for population ecologists, and is one of the most important environmental issues of the twenty-first century. An organism"s life history is a record of major events relating to its growth, development, reproduction and survival: life histories vary greatly from different species. Study of population ecology includes understanding, explaining, and predicting population species distributions: why species inhabit certain areas, preventing reaching range limits. Article: how populations grow- exponential and logistics equations. What are the underlying principles of how populations change over time: idea of exponential growth, it"s ultimate control. 2 represents constant r (the multiplying factor)